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Acta Agronomica Sinica ›› 2026, Vol. 52 ›› Issue (10): 2984-3005.doi: 10.3724/SP.J.1006.2026.63024

• CROP GENETICS & BREEDING·GERMPLASM RESOURCES·MOLECULAR GENETICS • Previous Articles     Next Articles

Dissection of the genetic composition of Shumai 753/Xiaoganmai-derived lines based on a 55K liquid SNP array

Ma Ting-Ting1,2(), Guo Xiao-Jiang1,2(), Li Hao1, Deng Mei1, Pu Zhi-En3, Li Wei3, Zhang Ya-Zhou1, Jiang Qian-Tao1,2, Ma Jian1,2, Wei Yu-Ming1,2, Wang Ji-Rui1,2, Zhao Rui-Fan4, Chen Guo-Yue1,2,*(), Jiang Yun-Feng1,2,*()   

  1. 1 Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
    2 State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, Sichuan, China
    3 College of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China
    4 Kailu County Agricultural and Livestock Product Quality and Safety Center, Tongliao 028400, Inner Mongolia, China
  • Received:2026-02-24 Accepted:2026-07-15 Online:2026-10-12 Published:2026-07-23
  • Contact: Jiang Yun-Feng, E-mail: jiangyunfeng@sicau.edu.cn;Chen Guo-Yue, E-mail: gychen@sicau.edu.cn
  • About author:** Contributed equally to this work
  • Supported by:
    National Key R&D Program of China(2024YFD1201200);National Natural Science Foundation of China(32272059);Science and Technology Department of Sichuan Province(2024NSFSC1212);Science and Technology Department of Sichuan Province(2024NSFSC1341);Science and Technology Department of Sichuan Province(2024NSFSC0328)

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Abstract:

The wheat landrace Xiaoganmai (ZM011362), originating from Dangyang, Hubei Province, exhibits multiple desirable traits, including multi-floret and high-grain-number characteristics, numerous effective tillers, stable pre-harvest sprouting resistance, and adult-plant resistance to stripe rust, making it a potentially valuable germplasm resource for modern wheat breeding. In a previous study, 178 Shumai 753/Xiaoganmai-derived lines were developed using Xiaoganmai as the donor parent and the elite breeding line Shumai 753, which carries all-stage stripe rust resistance genes and shows good overall agronomic performance, as the recurrent parent through hybridization, backcrossing, continuous multi-generation selfing, and a segmented target-trait selection strategy. This study aimed to dissect the genetic basis of the Shumai 753/Xiaoganmai-derived lines at the molecular level, identify key chromosomal regions controlling yield, disease resistance, and stress tolerance, and provide molecular evidence for the genetic improvement of wheat using landraces. Whole-genome scans of Xiaoganmai, Shumai 753, and their 178 derivative lines were performed using the wheat 55K liquid SNP array, and a total of 52,779 valid homozygous polymorphic SNP loci were obtained. Genetic similarity and genetic composition of the parents and derivative lines were analyzed based on these polymorphic SNP loci. The genetic similarity coefficient between the two parents was only 0.44, indicating substantial genetic divergence between Xiaoganmai and Shumai 753 at the molecular level. Analysis of the genetic similarity and composition of the derivative lines showed that their whole-genome molecular profiles were largely consistent with their pedigree background, with no obvious bias in parental inheritance. Based on marker-trait genome-wide association analysis, 127 chromosomal regions or loci significantly associated with plant height (14), spike length (12), spikelet number per spike (21), effective tiller number (20), thousand-grain weight (25), and relative seed germination index (35) were identified. Analysis of parental genetic contributions revealed that the proportions of SNP loci inherited from Xiaoganmai and Shumai 753 in the derivative lines ranged from 7.88% to 43.95% and from 56.05% to 92.12%, with average proportions of 26.45% and 73.55%, respectively. In total, 86 and 259 high-frequency selected regions derived from Xiaoganmai and Shumai 753, respectively, with sizes ranging from 0.01 to 108.75 Mb and contribution rates ≥80%, were identified in the derivative lines and were unevenly distributed across the 21 wheat chromosomes. Combined with the genome-wide association mapping results, 43 high-frequency selected chromosomal regions derived from Xiaoganmai and Shumai 753 were significantly associated with plant height, spike length, spikelet number per spike, effective tiller number, thousand-grain weight, and relative seed germination index. Among these regions, 16 simultaneously controlled two or more traits, indicating pleiotropic effects. Further analysis of the genetic composition of high-frequency selected chromosomal regions in 14 elite derivative lines revealed that the preferential transmission of regions significantly associated with important yield-related traits, together with their targeted selection as key loci, underlies the successful utilization of the landrace Xiaoganmai to improve the yield structure of Shumai 753 and ultimately achieve coordinated improvement in yield, disease resistance, and stress tolerance.

Key words: wheat landrace, genetic component, breeding-target trait, chromosomal region, 55K liquid SNP array

Fig. 1

Distribution of effective SNP loci across chromosomes"

Fig. 2

Cluster analysis of Xiaoganmai, Shumai 753, and their derivative lines based on effective SNP loci XG and SM753 represent Xiaoganmai and Shumai 753, respectively; XG1-XG178 represent the Shumai 753/Xiaoganmai derivative lines."

Table 1

Genome-wide association analysis of important breeding target traits in 178 Shumai 753/Xiaoganmai derivative lines"

性状
Trait		 染色体
Chromosome		 物理位置
Physical location (Mb)		 SNP标记
SNP marker		 位点来源
Origin of loci		 贡献率
PVE (%)		 效应值
Effect size
株高
PH		 1A 505.77-506.89 1A_506515648-1A_506875512 蜀麦753
Shumai 753		 14.73 -6.17
1A 537.47-541.80 1A_537553183-1A_542792251 8.72 -5.91
1B 346.59 1B_346589573 11.50 -3.53
1B 670.58-671.00 1B_670484381-1B_671554575 15.38 -7.59
1D 416.71 1D_416708035 10.86 -1.09
2B 165.96-166.35 2B_165964924-2B_166348576 8.22 -1.99
4A 751.83 4A_751827370 9.90 -6.87
4B 39.67-56.99 4B_39673795-4B_56997731 13.36 -7.07
4B 560.05-560.11 4B_560047443-4B_560106960 10.87 -3.47
4D 338.47-345.03 4D_338469331-4D_345027205 12.68 -1.57
5B 686.09-687.88 5B_686097427-5B_687879512 13.98 -6.16
6B 20.51-30.94 6B_20508577-6B_30935276 11.24 -3.40
6B 30.80-30.87 6B_30798633-6B_30869525 12.21 -2.81
7B 89.04-89.27 7B_89044330-7B_89268377 9.96 -2.41
穗长
SL		 1B 508.73-538.98 1B_508002028-1B_540662511 蜀麦753
Shumai 753		 11.33 1.61
1B 518.05 1B_518049414 12.72 1.90
1B 536.58 1B_536583042 9.06 2.12
1D 19.54 1D_19540914 12.09 1.48
1D 18.17-20.46 1D_18165741-1D_20446525 11.41 1.03
2A 781.67-785.13 2A_781665327-2A_785134205 14.76 3.77
2A 753.04-753.11 2A_753037657-2A_753110905 12.03 2.48
2B 192.77-216.82 2B_192766206-2B_216815508 11.69 0.50
4D 338.55-345.03 4D_338469331-4D_345027205 9.09 1.32
5B 448.57-463.51 5B_448572520-5B_463512589 9.94 2.43
6B 45.49 6B_45487968 12.02 1.75
7D 177.72-201.40 7D_177720351-7D_201399390 13.96 0.50
小穗数
NS		 1B 34.09-36.18 1B_34087138-1B_36675048 孝感麦
Xiaoganmai		 12.01 1.40
2B 60.13 2B_60129937 10.36 1.49
2D 138.97-143.23 2D_138970337-2D_143230708 7.64 1.36
3A 727.71-741.60 3A_727714919-3A_741602897 9.60 2.42
3A 701.08-703.91 3A_701084244-3A_707937650 12.35 1.58
3D 602.63-614.18 3D_602630974-3D_614175276 11.02 1.14
3D 554.20-556.91 3D_554200344-3D_556906014 12.41 1.60
4B 387.86-400.36 4B_387863420-4B_400357533 13.01 1.82
4D 2.51-4.08 4D_2509697-4D_4080175 14.52 1.04
4D 502.53-505.48 4D_502534085-4D_505482146 11.08 0.29
5B 58.52-62.03 5B_58519584-5B_62030504 9.49 1.64
5B 234.07-234.29 5B_234037645-5B_248867068 12.29 1.57
5B 420.44-425.37 5B_420327311-5B_425366028 13.27 1.56
5B 598.67-603.10 5B_598674322-5B_603454998 12.31 1.12
5B 668.98-673.47 5B_668976051-5B_673470410 11.67 1.44
5B 625.25-655.58 5B_625250023-5B_655579218 12.38 1.62
5D 236.60-244.79 5D_236599567-5D_244789232 10.40 1.61
5D 547.01-557.57 5D_547701647-5D_557566457 12.09 1.50
6A 1.40-1.76 6A_1402208-6A_1764936 7.72 1.37
7A 573.73-574.05 7A_574733874-7A_574004138 8.56 1.33
7B 680.95-695.60 7B_674236518-7B_696712991 9.19 1.14
有效分蘖
ETN		 1D 244.55 1D_244524282 孝感麦
Xiaoganmai		 11.20 2.03
2A 169.79-170.97 2A_169787228-2A_170971438 7.98 1.44
2D 342.96-360.28 2D_342959813-2D_360283509 11.53 1.26
3A 709.73-752.01 3A_709734991-3A_752012897 13.15 3.21
3A 727.71-741.60 3A_727708786-3A_741599101 11.22 1.07
3B 666.25-666.36 3B_666253086-3B_666362306 7.41 0.96
3D 602.63-614.18 3D_602630989-3D_619470276 16.01 1.08
4D 2.51-4.08 4D_2509728-4D_4317185 11.52 1.19
5A 667.47-712.17 5A_667465482-5A_712166943 10.98 1.30
5B 234.07-234.29 5B_230016625-5B_234648725 8.04 1.34
5B 420.44-425.37 5B_420440463-5B_425374816 7.27 1.30
5B 668.98-673.47 5B_659708238-5B_674599124 12.01 1.62
5B 598.67-603.10 5B_598671518-5B_603414385 13.08 2.15
5B 625.25-655.58 5B_625250045-5B_673875416 11.70 1.12
5D 547.01-557.57 5D_537701696-5D_558826457 12.15 1.27
6A 301.10-305.06 6A_301102120-6A_305057996 8.99 1.39
7A 501.94-504.85 7A_501019473-7A_506242999 9.86 1.28
7A 575.58-586.99 7A_574023878-7A_587461029 14.43 0.86
7B 680.95-695.60 7B_680948123-7B_697712932 11.69 1.30
7D 8.63-11.63 7D_8625395-7D_11631717 9.20 1.37
千粒重
TGW		 1A 495.20-495.26 1A_495197351-1A_495264890 蜀麦753
Shumai 753		 15.22 5.63
1A 535.43 1A_535438599 12.85 3.48
1B 696.63-696.70 1B_696635343-1B_696696335 11.53 1.99
2B 747.73 2B_747726725 12.35 3.90
2B 757.62 2B_757616431 13.31 3.82
2B 773.28 2B_773275836 13.29 3.78
4A 543.93-544.74 4A_543931465-4A_544742207 11.53 1.99
4B 39.67-56.99 4B_39203795-4B_58487731 8.83 4.42
4B 657.89 4B_657891306 11.04 2.86
4B 426.54 4B_426540892 14.62 2.12
5B 440.23-442.76 5B_440227955-5B_442759200 13.35 2.96
5B 534.73-542.43 5B_532676798-5B_545676966 7.41 3.04
5B 541.99 5B_541993106 16.49 2.67
5B 686.09-687.88 5B_686887427-5B_687884590 12.09 3.41
6B 20.51-30.94 6B_19668387-6B_34668463 17.42 5.08
1A 476.41-485.20 1A_476410898-1A_486380995 孝感麦
Xiaoganmai		 13.80 2.02
1A 548.57 1A_548574481 10.55 3.67
3B 23.54 3B_23536164 9.29 1.94
3B 586.10 3B_586096691 14.15 1.34
5B 137.69-138.43 5B_137686239-5B_138428082 9.26 1.88
5B 420.44-425.37 5B_425992399-5B_426177431 10.74 4.09
5B 631.73-646.49 5B_630676252-5B_648686730 15.19 5.62
5D 553.24 5D_553241485 11.39 5.56
7A 501.90-516.44 7A_500917903-7A_520063412 7.98 1.66
7A 715.00-726.35 7A_714657615-7A_731665497 10.11 2.74
相对籽粒发芽指数
RSGI		 1A 13.28-22.10 1A_13276331-1A_23576403 孝感麦
Xiaoganmai		 9.35 -0.39
1A 42.09 1A_42085827 8.02 -0.49
1A 476.41-485.20 1A_475345497-1A_489353005 6.68 -0.93
1A 484.37-484.38 1A_484371829-1A_484380937 12.14 -2.14
1A 559.91-561.09 1A_559127900-1A_560932514 11.58 -0.25
2A 749.02-752.22 2A_748830046-2A_753436048 16.24 -1.11
2D 66.38-71.69 2D_66378429-2D_73460264 7.90 -0.18
2D 305.99 2D_305988045 9.45 -0.71
2D 609.69 2D_609685229 8.02 -0.22
3A 23.46 3A_23457903 12.30 -0.51
3A 727.71-741.60 3A_727942947-3A_741692968 13.81 -0.33
3D 602.63-614.18 3D_607260300-3D_617882100 10.57 -0.15
4D 2.51-4.08 4D_2509805-4D_4245285 9.48 -0.38
5A 28.04-34.04 5A_23555404-5A_31682098 9.35 -0.46
5B 39.40-49.61 5B_39399386-5B_55208825 8.18 -1.90
5B 234.07-234.29 5B_234062573-5B_234267936 10.45 -0.95
5B 420.44-425.37 5B_420440463-5B_428163623 13.12 -1.40
5B 547.63-565.62 5B_547771476-5B_566520011 10.02 -0.35
5B 566.21 5B_566206942 11.35 -1.18
5B 580.37-580.68 5B_579801844-5B_580751911 12.68 -0.36
5B 598.67-603.10 5B_598671562-5B_603680998 11.67 -1.58
5B 625.25-626.67 5B_623483228-5B_626681099 9.56 -0.30
5B 648.16-655.58 5B_646491015-5B_658163623 7.52 -0.48
5B 668.98-673.47 5B_668983049-5B_675983231 10.38 -0.24
5D 547.01-557.57 5D_545208825-5D_559035730 14.45 -1.24
5D 566.71 5D_566705595 9.40 -0.24
6B 126.39-127.90 6B_124267269-6B_127899708 7.58 -0.55
7A 15.13-16.78 7A_13457338-7A_16928345 9.30 -0.45
7A 501.90-516.44 7A_501935372-7A_522628657 14.44 -0.25
7A 621.25 7A_621252139 9.51 -0.24
7A 715.00-726.35 7A_706242963-7A_727207111 16.28 -0.25
7B 680.95-695.60 7B_674236518-7B_700948194 10.29 -0.31
7B 710.21 7B_710213115-7B_710213183 11.79 -0.19
7D 91.09-94.38 7D_91070058-7D_99670088 12.95 -0.83
7D 106.64 7D_106642434 10.06 -0.16

Table S1

Genetic contribution of Shumai 753 and wheat landrace Xiaoganmai to their 178 derived lines (%)"

衍生品系
Derivative line		 蜀麦753 Shumai 753 孝感麦 Xiaoganmai
A基因组
A genome		 B基因组
B genome		 D基因组
D genome		 全基因组
Whole genome		 A基因组
A genome		 B基因组
B genome		 D基因组
D genome		 全基因组
Whole genome
XG1 72.09 82.20 76.72 77.94 27.91 17.80 23.28 22.06
XG2 81.26 81.29 82.77 81.43 18.74 18.71 17.23 18.57
XG3 76.38 83.64 87.62 81.37 23.62 16.36 12.38 18.63
XG4 76.05 84.66 77.15 80.80 23.95 15.34 22.85 19.20
XG5 81.16 81.35 84.90 81.62 18.84 18.65 15.10 18.38
XG6 72.53 82.72 77.01 78.42 27.47 17.28 22.99 21.58
XG7 76.77 80.90 89.50 80.26 23.23 19.10 10.50 19.74
XG8 50.70 72.68 35.58 60.74 49.30 27.32 64.42 39.26
XG9 71.15 80.73 35.82 72.80 28.85 19.27 64.18 27.20
XG10 74.67 83.55 88.34 80.68 25.33 16.45 11.66 19.32
XG11 80.04 86.03 85.32 83.66 19.96 13.97 14.68 16.34
XG12 76.98 88.28 93.29 84.36 23.02 11.72 6.71 15.64
XG13 79.29 82.76 85.66 81.74 20.71 17.24 14.34 18.26
XG14 52.87 67.02 35.71 58.86 47.13 32.98 64.29 41.14
XG15 52.83 67.04 35.66 58.85 47.17 32.96 64.34 41.15
XG16 54.68 66.14 35.77 58.83 45.32 33.86 64.23 41.17
XG17 78.90 83.67 92.34 82.65 21.10 16.33 7.66 17.35
XG18 66.22 77.90 34.31 70.37 33.78 22.10 65.69 29.63
XG19 79.72 82.12 85.81 81.58 20.28 17.88 14.19 18.42
XG20 79.65 76.97 85.85 78.81 20.35 23.03 14.15 21.19
XG21 72.51 73.51 79.25 73.71 27.49 26.49 20.75 26.29
XG22 81.16 81.31 83.76 81.49 18.84 18.69 16.24 18.51
XG23 54.31 72.92 35.65 62.45 45.69 27.08 64.35 37.55
XG24 67.15 81.18 40.53 72.09 32.85 18.82 59.47 27.91
XG25 78.49 85.09 89.22 83.07 21.51 14.91 10.78 16.93
XG26 60.67 63.28 61.23 62.13 39.33 36.72 38.77 37.87
XG27 54.55 73.57 35.60 62.86 45.45 26.43 64.40 37.14
XG28 74.25 82.34 77.01 78.87 25.75 17.66 22.99 21.13
XG29 81.00 81.72 86.09 81.89 19.00 18.28 13.91 18.11
XG30 79.53 79.66 85.48 80.21 20.47 20.34 14.52 19.79
XG31 50.38 65.28 35.55 56.80 49.62 34.72 64.45 43.20
XG32 50.27 64.38 35.56 56.35 49.73 35.62 64.44 43.65
XG33 79.70 81.12 85.27 81.00 20.30 18.88 14.73 19.00
XG34 72.55 82.75 77.01 78.45 27.45 17.25 22.99 21.55
XG35 61.65 73.57 34.41 65.37 38.35 26.43 65.59 34.63
XG36 81.27 81.26 85.00 81.63 18.73 18.74 15.00 18.37
XG37 80.94 82.39 85.53 82.14 19.06 17.61 14.47 17.86
XG38 89.12 88.40 87.05 88.56 10.88 11.60 12.95 11.44
XG39 54.89 73.51 35.54 62.94 45.11 26.49 64.46 37.06
XG40 73.13 80.91 40.34 74.11 26.87 19.09 59.66 25.89
XG41 91.84 92.44 90.03 92.12 8.16 7.56 9.97 7.88
XG42 70.20 74.97 35.85 69.33 29.80 25.03 64.15 30.67
XG43 72.54 82.73 76.89 78.43 27.46 17.27 23.11 21.57
XG44 81.31 81.35 84.77 81.67 18.69 18.65 15.23 18.33
XG45 61.05 73.12 35.67 65.07 38.95 26.88 64.33 34.93
XG46 71.31 78.85 35.83 71.78 28.69 21.15 64.17 28.22
XG47 79.74 83.66 85.45 82.38 20.26 16.34 14.55 17.62
XG48 50.65 73.00 35.58 60.98 49.35 27.00 64.42 39.02
XG49 69.06 73.14 41.88 68.58 30.94 26.86 58.12 31.42
XG50 70.11 77.41 40.09 71.08 29.89 22.59 59.91 28.92
XG51 66.98 71.92 42.63 67.13 33.02 28.08 57.37 32.87
XG52 68.19 73.89 44.49 68.91 31.81 26.11 55.51 31.09
XG53 78.13 88.08 93.90 84.89 21.87 11.92 6.10 15.11
XG54 78.67 78.88 86.66 79.57 21.33 21.12 13.34 20.43
XG55 61.25 72.93 34.38 64.92 38.75 27.07 65.62 35.08
XG56 50.63 72.90 35.63 60.92 49.37 27.10 64.37 39.08
XG57 82.40 92.32 81.69 87.92 17.60 7.68 18.31 12.08
XG58 80.03 74.90 85.31 77.88 19.97 25.10 14.69 22.12
XG59 64.35 77.60 40.44 69.15 35.65 22.40 59.56 30.85
XG60 76.30 85.06 77.02 81.13 23.70 14.94 22.98 18.87
XG61 70.34 85.22 70.97 79.15 29.66 14.78 29.03 20.85
XG62 50.46 66.76 35.66 57.73 49.54 33.24 64.34 42.27
XG63 60.03 73.69 43.76 65.78 39.97 26.31 56.24 34.22
XG64 76.21 84.76 42.12 77.91 23.79 15.24 57.88 22.09
XG65 77.60 84.62 77.21 81.31 22.40 15.38 22.79 18.69
XG66 81.39 80.98 82.61 81.29 18.61 19.02 17.39 18.71
XG67 77.52 83.79 76.79 80.85 22.48 16.21 23.21 19.15
XG68 72.47 82.68 76.76 78.36 27.53 17.32 23.24 21.64
XG69 49.63 73.58 36.14 61.69 50.37 26.42 63.86 38.31
XG70 54.63 70.83 35.51 60.95 45.37 29.17 64.49 39.05
XG71 53.02 70.86 35.54 60.99 46.98 29.14 64.46 39.01
XG72 79.50 82.91 86.02 81.92 20.50 17.09 13.98 18.08
XG73 76.07 87.53 68.76 82.45 23.93 12.47 31.24 17.55
XG74 67.87 73.25 36.68 67.88 32.13 26.75 63.32 32.12
XG75 72.54 82.72 76.95 78.43 27.46 17.28 23.05 21.57
XG76 65.44 73.55 35.30 66.81 34.56 26.45 64.70 33.19
XG77 79.83 75.68 85.32 78.20 20.17 24.32 14.68 21.80
XG78 70.39 74.86 41.86 69.96 29.61 25.14 58.14 30.04
XG79 72.40 82.68 76.90 78.36 27.60 17.32 23.10 21.64
XG80 64.21 73.36 34.48 66.26 35.79 26.64 65.52 33.74
XG81 83.69 79.67 78.86 81.09 16.31 20.33 21.14 18.91
XG82 70.74 71.74 34.59 67.44 29.26 28.26 65.41 32.56
XG83 52.68 71.78 35.51 60.98 47.32 28.22 64.49 39.02
XG84 72.48 73.50 79.36 73.71 27.52 26.50 20.64 26.29
XG85 55.39 73.58 35.29 63.17 44.61 26.42 64.71 36.83
XG86 68.59 73.37 37.64 68.39 31.41 26.63 62.36 31.61
XG87 70.87 80.16 34.83 72.00 29.13 19.84 65.17 28.00
XG88 72.37 73.35 40.39 69.69 27.63 26.65 59.61 30.31
XG89 63.95 73.35 34.03 66.12 36.05 26.65 65.97 33.88
XG90 73.35 79.57 37.97 73.17 26.65 20.43 62.03 26.83
XG91 77.32 80.98 88.01 80.26 22.68 19.02 11.99 19.74
XG92 77.78 83.25 89.28 81.82 22.22 16.75 10.72 18.18
XG93 76.53 80.90 87.94 79.93 23.47 19.10 12.06 20.07
XG94 67.07 74.98 41.65 68.82 32.93 25.02 58.35 31.18
XG95 81.33 81.06 85.47 81.59 18.67 18.94 14.53 18.41
XG96 69.55 73.14 34.12 67.97 30.45 26.86 65.88 32.03
XG97 68.00 73.91 41.74 68.60 32.00 26.09 58.26 31.40
XG98 75.19 71.82 40.37 69.94 24.81 28.18 59.63 30.06
XG99 55.59 72.69 34.63 62.80 44.41 27.31 65.37 37.20
XG100 74.38 73.91 41.40 70.97 25.62 26.09 58.60 29.03
XG101 58.02 70.97 36.76 63.20 41.98 29.03 63.24 36.80
XG102 59.10 73.59 34.44 64.53 40.90 26.41 65.56 35.47
XG103 54.17 73.24 35.51 62.55 45.83 26.76 64.49 37.45
XG104 54.63 70.54 35.52 61.29 45.37 29.46 64.48 38.71
XG105 69.91 73.44 34.09 68.28 30.09 26.56 65.91 31.72
XG106 77.77 84.88 89.36 82.77 22.23 15.12 10.64 17.23
XG107 72.30 76.74 41.71 71.69 27.70 23.26 58.29 28.31
XG108 79.35 83.70 85.21 82.23 20.65 16.30 14.79 17.77
XG109 83.80 87.07 74.53 84.97 16.20 12.93 25.47 15.03
XG110 75.22 73.93 43.43 71.42 24.78 26.07 56.57 28.58
XG111 81.29 81.25 85.37 81.66 18.71 18.75 14.63 18.34
XG112 70.68 74.17 41.86 69.73 29.32 25.83 58.14 30.27
XG113 72.88 84.68 76.87 79.56 27.12 15.32 23.13 20.44
XG114 90.02 93.00 90.55 91.83 9.98 7.00 9.45 8.17
XG115 77.56 83.97 76.91 80.97 22.44 16.03 23.09 19.03
XG116 79.81 79.51 85.27 80.20 20.19 20.49 14.73 19.80
XG117 80.45 81.50 85.93 81.55 19.55 18.50 14.07 18.45
XG118 50.57 71.95 35.59 60.56 49.43 28.05 64.41 39.44
XG119 78.87 92.01 82.10 87.43 21.13 7.99 17.90 12.57
XG120 78.90 81.70 85.83 81.06 21.10 18.30 14.17 18.94
XG121 79.62 81.47 85.24 81.16 20.38 18.53 14.76 18.84
XG122 79.64 78.63 85.63 79.72 20.36 21.37 14.37 20.28
XG123 74.38 80.86 87.63 79.05 25.62 19.14 12.37 20.95
XG124 79.26 84.06 85.77 82.47 20.74 15.94 14.23 17.53
XG125 72.99 85.05 77.16 79.87 27.01 14.95 22.84 20.13
XG126 81.03 81.33 86.05 81.68 18.97 18.67 13.95 18.32
XG127 75.97 73.37 35.59 70.80 24.03 26.63 64.41 29.20
XG128 75.84 82.63 77.22 79.65 24.16 17.37 22.78 20.35
XG129 74.66 85.05 89.31 81.66 25.34 14.95 10.69 18.34
XG130 78.29 84.14 57.02 79.66 21.71 15.86 42.98 20.34
XG131 81.12 81.20 86.10 81.65 18.88 18.80 13.90 18.35
XG132 67.19 80.13 40.50 71.47 32.81 19.87 59.50 28.53
XG133 79.10 80.26 85.92 80.39 20.90 19.74 14.08 19.61
XG134 74.63 83.70 80.61 80.07 25.37 16.30 19.39 19.93
XG135 72.49 73.40 79.22 73.64 27.51 26.60 20.78 26.36
XG136 78.10 84.31 89.30 82.53 21.90 15.69 10.70 17.47
XG137 66.42 73.29 35.32 67.06 33.58 26.71 64.68 32.94
XG138 76.30 77.38 40.05 73.29 23.70 22.62 59.95 26.71
XG139 52.76 70.48 35.52 60.27 47.24 29.52 64.48 39.73
XG140 78.40 84.89 76.75 81.71 21.60 15.11 23.25 18.29
XG141 75.77 73.93 34.56 70.76 24.23 26.07 65.44 29.24
XG142 62.75 80.32 36.98 69.70 37.25 19.68 63.02 30.30
XG143 79.73 72.90 85.25 76.63 20.27 27.10 14.75 23.37
XG144 79.23 83.35 48.79 78.84 20.77 16.65 51.21 21.16
XG145 69.49 73.24 34.26 68.06 30.51 26.76 65.74 31.94
XG146 93.98 91.75 70.86 90.87 6.02 8.25 29.14 9.13
XG147 50.53 66.92 35.70 57.85 49.47 33.08 64.30 42.15
XG148 72.54 73.47 79.30 73.70 27.46 26.53 20.70 26.30
XG149 60.74 63.37 61.35 62.21 39.26 36.63 38.65 37.79
XG150 60.03 73.17 34.81 64.72 39.97 26.83 65.19 35.28
XG151 71.09 80.33 37.29 72.76 28.91 19.67 62.71 27.24
XG152 70.80 73.67 44.59 69.71 29.20 26.33 55.41 30.29
XG153 65.07 73.41 35.37 66.61 34.93 26.59 64.63 33.39
XG154 72.46 73.56 44.51 70.26 27.54 26.44 55.49 29.74
XG155 50.79 70.20 35.51 59.68 49.21 29.80 64.49 40.32
XG156 72.52 82.78 77.04 78.46 27.48 17.22 22.96 21.54
XG157 75.58 74.01 42.35 71.54 24.42 25.99 57.65 28.46
XG158 79.53 78.49 95.08 80.63 20.47 21.51 4.92 19.37
XG159 54.68 64.31 35.62 57.97 45.32 35.69 64.38 42.03
XG160 62.38 73.54 37.55 66.47 37.62 26.46 62.45 33.53
XG161 70.38 73.73 44.04 69.57 29.62 26.27 55.96 30.43
XG162 58.01 64.07 35.07 59.05 41.99 35.93 64.93 40.95
XG163 75.44 79.15 42.01 73.68 24.56 20.85 57.99 26.32
XG164 50.39 63.70 35.44 56.05 49.61 36.30 64.56 43.95
XG165 76.56 73.78 37.36 71.23 23.44 26.22 62.64 28.77
XG166 79.83 80.38 85.22 80.65 20.17 19.62 14.78 19.35
XG167 67.89 73.53 35.18 67.68 32.11 26.47 64.82 32.32
XG168 50.55 73.61 35.52 61.38 49.45 26.39 64.48 38.62
XG169 53.31 64.75 35.66 57.75 46.69 35.25 64.34 42.25
XG170 81.89 90.82 82.93 86.48 18.11 9.18 17.07 13.52
XG171 80.55 81.96 84.10 81.66 19.45 18.04 15.90 18.34
XG172 54.46 72.57 35.70 62.34 45.54 27.43 64.30 37.66
XG173 52.46 66.18 35.78 58.16 47.54 33.82 64.22 41.84
XG174 52.74 77.59 47.26 66.00 47.26 22.41 52.74 34.00
XG175 72.54 82.66 77.06 78.40 27.46 17.34 22.94 21.60
XG176 77.58 80.87 76.84 79.27 22.42 19.13 23.16 20.73
XG177 90.18 89.71 85.37 89.39 9.82 10.29 14.63 10.61
XG178 76.69 82.52 76.98 79.82 23.31 17.48 23.02 20.18
平均值
Average value (%)		 70.67 77.90 60.13 73.55 29.33 22.10 39.78 26.45
理论值
Theoretical value (%)		 75.00 75.00 75.00 75.00 25.00 25.00 25.00 25.00

Table 2

Distribution of high-frequency selected regions from Shumai 753 or the wheat landrace Xiaoganmai across genomes and chromosomes"

亚基因组
Sub-genome		 染色体
Chromosome		 孝感麦
Xiaoganmai		 蜀麦753
Shumai 753		 合计
Total		 片段长度
Fragment length (Mb)
A亚基因组
A sub-genome		 1A 11 18 29 0.05-19.09
2A 2 16 18 0.12-12.80
3A 9 19 28 0.20-23.40
4A 1 14 15 0.29-26.50
5A 8 9 17 0.01-57.51
6A 0 1 1 6.26
7A 15 10 25 0.19-11.42
合计Total 46 87 133
B亚基因组
B sub-genome		 1B 0 26 26 0.42-34.03
2B 0 26 26 0.45-50.54
3B 4 19 23 1.13-35.98
4B 0 21 21 0.01-18.95
5B 13 18 31 0.23-14.94
6B 3 34 37 0.31-42.99
7B 3 1 4 0.86-14.66
合计Total 23 145 168
D亚基因组
D sub-genome		 1D 2 9 11 0.53-16.52
2D 6 2 8 0.57-12.76
3D 3 0 3 0.15-6.92
4D 2 2 4 0.74-23.48
5D 3 1 4 2.43-19.64
6D 0 4 4 0.01-0.98
7D 1 9 10 1.36-108.75
合计Total 17 27 44

Fig. 3

Distribution of high-frequency selected regions from Shumai 753 or the wheat landrace Xiaoganmai on chromosomes XG and SM753 represent Xiaoganmai and Shumai 753, respectively; blue and dark red regions indicate high-frequency selected regions derived from the wheat landrace Xiaoganmai and Shumai 753, respectively, whereas gray regions indicate non-high- frequency selected regions derived from either Xiaoganmai or Shumai 753."

Table 3

Association analysis between high-frequency selected segments and phenotypic traits"

性状
Trait		 物理位置
Physical location (Mb)		 片段大小
Fragment size (Mb)		 染色体
Chromosome		 片段来源
Origin of fragment
株高PH 505.77-506.85 1.08 1A 蜀麦753 Shumai 753
537.47-541.80 4.33 1A 蜀麦753 Shumai 753
670.58-671.00 0.42 1B 蜀麦753 Shumai 753
穗长SL 508.73-538.98 30.25 1B 蜀麦753 Shumai 753
18.17-20.46 2.29 1D 蜀麦753 Shumai 753
781.67-785.13 3.46 2A 蜀麦753 Shumai 753
192.77-216.82 24.06 2B 蜀麦753 Shumai 753
448.57-463.51 14.94 5B 蜀麦753 Shumai 753
177.72-201.40 23.68 7D 蜀麦753 Shumai 753
小穗数NS 573.73-574.05 0.32 7A 孝感麦 Xiaoganmai
有效分蘖ETN 501.94-504.85 2.92 7A 孝感麦 Xiaoganmai
575.58-586.99 11.42 7A 孝感麦 Xiaoganmai
千粒重TGW 631.73-646.49 14.76 5B 孝感麦 Xiaoganmai
534.73-542.43 7.70 5B 蜀麦753 Shumai 753
相对籽粒发芽指数RSGI 559.91-561.09 1.18 1A 孝感麦 Xiaoganmai
13.28-22.10 8.82 1A 孝感麦 Xiaoganmai
749.02-752.22 3.20 2A 孝感麦 Xiaoganmai
66.38-71.69 5.31 2D 孝感麦 Xiaoganmai
28.04-34.04 6.00 5A 孝感麦 Xiaoganmai
580.37-580.68 0.32 5B 孝感麦 Xiaoganmai
625.25-626.67 1.42 5B 孝感麦 Xiaoganmai
648.16-655.58 7.42 5B 孝感麦 Xiaoganmai
39.40-49.61 10.21 5B 孝感麦 Xiaoganmai
547.63-565.62 17.99 5B 孝感麦 Xiaoganmai
126.39-127.90 1.51 6B 孝感麦 Xiaoganmai
15.13-16.78 1.65 7A 孝感麦 Xiaoganmai
91.09-94.38 3.29 7D 孝感麦 Xiaoganmai
株高、千粒重 PH, TGW 39.67-56.99 17.33 4B 蜀麦753 Shumai 753
686.09-687.88 1.79 5B 蜀麦753 Shumai 753
20.51-30.94 10.43 6B 蜀麦753 Shumai 753
千粒重、相对籽粒发芽指数TGW, RSGI 715.00-726.35 11.35 7A 孝感麦 Xiaoganmai
501.90-516.44 14.54 7A 孝感麦 Xiaoganmai
476.41-485.20 8.79 1A 孝感麦 Xiaoganmai
小穗数、有效分蘖NS, ETN 625.25-655.58 30.33 5B 孝感麦 Xiaoganmai
小穗数、有效分蘖、相对籽粒发芽指数
NS, ETN, RSGI		 727.71-741.60 13.89 3A 孝感麦 Xiaoganmai
602.63-614.18 11.55 3D 孝感麦 Xiaoganmai
2.51-4.08 1.57 4D 孝感麦 Xiaoganmai
234.07-234.29 0.23 5B 孝感麦 Xiaoganmai
598.67-603.10 4.42 5B 孝感麦 Xiaoganmai
668.98-673.47 4.49 5B 孝感麦 Xiaoganmai
680.95-695.60 14.66 7B 孝感麦 Xiaoganmai
小穗数、有效分蘖、千粒重、相对籽粒发芽指数NS, ETN, TGW, RSGI 420.44-425.37 4.93 5B 孝感麦 Xiaoganmai
547.01-557.57 10.56 5D 孝感麦 Xiaoganmai

Table 4

Distribution of high-frequency selected chromosomal segments from Shumai 753 in 14 elite derivative lines"

亚基因组
Sub-genome		 染色体
Chromosome		 XG9 XG11 XG12 XG35 XG52 XG95 XG139
A亚基因组
A sub-genome		 1A 16 6 6 17 17 8 17
2A 17 13 11 25 8 14 10
3A 16 15 12 18 18 20 18
4A 14 10 1 14 14 10 14
5A 8 7 9 8 8 6 8
6A 0 0 1 0 0 0 0
7A 9 4 9 9 10 5 9
合计Total 80 55 49 91 75 63 76
B亚基因组
B sub-genome		 1B 25 12 2 25 25 23 25
2B 23 22 11 26 26 26 26
3B 15 11 14 16 17 12 8
4B 21 14 2 21 20 18 21
5B 21 9 2 17 18 9 18
6B 32 14 14 30 31 32 28
7B 1 1 0 1 1 1 1
合计Total 138 83 45 136 138 121 127
D亚基因组
D sub-genome		 1D 8 8 2 8 8 9 7
2D 1 1 3 1 1 1 1
3D 0 0 0 0 0 0 0
4D 2 1 0 2 2 1 2
5D 1 1 0 1 0 9 1
6D 1 3 4 2 4 3 4
7D 8 4 6 6 7 7 6
合计Total 21 18 15 20 22 30 21
亚基因组
Sub-genome		 染色体
Chromosome		 XG141 XG142 XG147 XG151 XG154 XG157 XG164
A亚基因组
A sub-genome		 1A 17 14 16 14 17 16 16
2A 17 17 10 16 17 17 10
3A 18 16 18 14 18 18 18
4A 14 14 14 14 14 14 14
5A 8 3 8 4 8 8 8
6A 0 0 0 0 0 0 0
7A 17 10 9 9 10 9 9
合计Total 91 74 75 71 84 82 75
B亚基因组
B sub-genome		 1B 25 25 25 25 25 25 25
2B 26 26 26 26 26 26 26
3B 17 12 7 13 17 17 4
4B 21 21 21 21 21 21 20
5B 18 23 18 22 18 18 18
6B 31 32 29 32 31 30 28
7B 1 1 1 1 1 1 1
合计Total 139 140 127 140 139 138 122
D亚基因组
D sub-genome		 1D 8 7 7 7 8 8 7
2D 1 1 1 1 1 1 1
3D 0 0 0 0 0 0 0
4D 2 2 2 2 2 2 2
5D 1 1 1 1 1 1 1
6D 1 4 3 4 4 2 4
7D 7 7 6 7 7 7 6
合计Total 20 22 20 22 23 21 21

Table 5

Distribution of high-frequency selected chromosomal segments from the wheat landrace Xiaoganmai in 14 elite derivative lines"

亚基因组
Sub-genome		 染色体
Chromosome		 XG9 XG11 XG12 XG35 XG52 XG95 XG139
A亚基因组
A sub-genome		 1A 8 5 3 8 8 5 8
2A 1 2 0 3 7 2 2
3A 10 5 1 10 9 6 10
4A 1 1 1 1 1 2 1
5A 2 1 1 2 2 6 2
6A 0 0 0 0 0 0 0
7A 5 10 1 6 15 10 15
合计Total 27 24 7 30 42 31 38
B亚基因组
B sub-genome		 1B 0 0 0 0 0 0 0
2B 3 0 0 0 0 0 0
3B 2 2 0 0 0 2 0
4B 0 0 1 0 0 0 0
5B 8 0 0 12 12 4 12
B亚基因组
B sub-genome		 6B 2 0 2 3 3 2 6
7B 2 1 0 3 3 1 3
合计Total 17 3 3 18 18 9 21
D亚基因组
D sub-genome		 1D 0 0 0 0 0 0 0
2D 6 5 4 6 5 5 6
3D 3 2 0 3 3 2 3
4D 2 2 0 2 2 2 2
5D 2 0 0 2 2 0 2
6D 3 0 0 0 0 0 0
7D 1 0 0 1 1 0 1
合计Total 17 9 4 14 13 9 14
亚基因组
Sub-genome		 染色体
Chromosome		 XG141 XG142 XG147 XG151 XG154 XG157 XG164
A亚基因组
A sub-genome		 1A 8 10 9 10 8 9 9
2A 1 1 7 2 1 1 7
3A 9 10 10 12 9 10 9
4A 1 1 1 1 1 1 1
5A 2 10 2 9 2 2 2
6A 0 0 0 0 0 0 0
7A 6 6 15 5 15 6 15
合计Total 27 38 44 39 36 29 43
B亚基因组
B sub-genome		 1B 0 0 0 0 0 0 0
2B 0 0 0 0 0 0 0
3B 0 4 14 4 0 0 17
4B 0 0 0 0 0 0 0
5B 12 7 12 7 12 12 12
6B 3 2 3 2 3 3 6
7B 3 2 3 2 3 3 3
合计Total 18 15 32 15 18 18 38
D亚基因组
D sub-genome		 1D 0 0 0 0 0 0 0
2D 6 6 6 6 5 5 6
3D 3 3 3 3 3 3 3
4D 2 2 2 2 2 2 2
5D 2 2 2 2 2 2 2
6D 3 0 0 0 0 1 0
7D 1 1 1 1 0 1 2
合计Total 17 14 14 14 12 14 15

Fig. 4

Distribution of high-frequency selected regions from Shumai 753 or the wheat landrace Xiaoganmai on chromosomes of elite derivative lines Blue and dark red regions indicate high-frequency selected regions derived from the wheat landrace Xiaoganmai and Shumai 753, respectively, whereas gray regions indicate non-high-frequency selected regions derived from either Xiaoganmai or Shumai 753. XG and SM753 represent Xiaoganmai and Shumai 753, respectively; A-N represent the Shumai 753/Xiaoganmai elite derivative lines XG9, XG11, XG12, XG35, XG52, XG95, XG139, XG141, XG142, XG147, XG151, XG154, XG157, and XG164, respectively."

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