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Acta Agronomica Sinica ›› 2020, Vol. 46 ›› Issue (5): 734-744.doi: 10.3724/SP.J.1006.2020.94138

• TILLAGE & CULTIVATION·PHYSIOLOGY & BIOCHEMISTRY • Previous Articles     Next Articles

Screening and identification of Chinese sorghum landraces for salt tolerance at germination and seedling stages

Li-Ge BAO1,2,Ping LU2,Meng-Sha SHI2,Yue XU3,*(),Min-Xuan LIU2,*()   

  1. 1Zhuhai College of Jilin University, Zhuhai 519041, Guangdong, China
    2Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
    3College of Life Sciences, Jilin University, Changchun 130012, Jilin, China.
  • Received:2019-09-17 Accepted:2020-01-15 Online:2020-05-12 Published:2020-02-17
  • Contact: Yue XU,Min-Xuan LIU E-mail:xu_yue@jlu.edu.cn;liuminxuan@caas.cn
  • Supported by:
    This study was supported by the China Agriculture Research System(CARS-06-13.5-A16);the Agricultural Science and Technology Innovation Program of CAAS.

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Abstract:

The deterioration of soil salinization has caused great harm to modern agricultural production in the world. Sorghum is not only one of five main crops, but also an outstanding salt tolerant crop. The screening and identification of sorghum salt tolerance will be very important to the development and utilization of salinized land, increasing grain yield and maintaining sustainable agricultural development. In this experiment, 110 sorghum landraces were selected to test salt tolerance at germination (200 mmol L -1 NaCl treated) and seedling stages (100 mmol L -1 NaCl treated). The two germination indicators including the germination potential and the germination rate, as well as seven seedling indicators, including the relative chlorophyll content (SPAD), seedling length, root length, seedling fresh weight, seedling dry weight, root fresh weight, root dry weight were measured. The relative values of various indicators under salt stress were calculated, showing that the relative germination potential and relative germination rate of 110 sorghum landraces were 0-98.89% and 23.65%-101.79%, and The seven seedling indicators were 59.53%-99.91%, 52.47%-95.23%, 47.87%-100.14%, 27.43%-95.28%, 30.48%-98.26%, 21.62%-100.34%, 31.46%-102.13%, respectively. Combined the membership function value analysis, principal component analysis with cluster analysis, the salt tolerance ability of the 110 landraces at germination stage and seedling stage was comprehensively evaluated and the 110 landraces were clustered into four groups. A batch of sorghum landraces with salt tolerance at germination and seedling stages were identified, especially ten landraces, including Chaoyangbangchui (00003011) from Inner Mongolia and the Baidazimao (00001081) from Beijing showed high salt tolerance, which can be used in further research. There was no significant correlation in salt tolerance between the germination stage and the seedling stage. Principal component analysis results indicated that seedling dry weight and root fresh weight can be used as indicators for the evaluation of salt tolerance of a large number of sorghum landraces at seedling stage.

Key words: sorghum, NaCl stress, germination stage, seedling stage, salt tolerance

Supplementary table 1

Sorghum landraces and sources used in this study"

统一编号
Code		 品种名称
Landrace		 来源地
Source
00001067 北平五号 Beipingwuhao 北京 Beijing
00001075 北平黑壳白 Beipingheikebai 北京 Beijing
00001076 北平南郊白 Beipingnanjiaobai 北京 Beijing
00001079 白抢高粱 Baiqianggaoliang 北京 Beijing
00001080 白娥粘 Baienian 北京 Beijing
00001081 白鞑子帽 Baidazimao 北京 Beijing
00001082 白粘高粱 Bainiangaoliang 北京 Beijing
00001108 黄粘高粱 Huangniangaoliang 北京 Beijing
00001112 粘高粱 Niangaoliang 北京 Beijing
00001121 矬腿汗 Cuotuihan 北京 Beijing
00001122 矬粘高梁 Cuoniangaoliang 北京 Beijing
00001124 锦州白 Jinzhoubai 北京 Beijing
00007606 大岑 Dacen 北京 Beijing
00007611 白仁高粱 Bairengaoliang 北京 Beijing
00001185 八尺秆 Bachigan 河北 Hebei
00001256 大红高粱 Dahonggaoliang 河北 Hebei
00001283 大青高粱 Daqinggaoliang 河北 Hebei
00001310 大散码 Dasanma 河北 Hebei
00001315 万人迷 Wanrenmi 河北 Hebei
00001316 山西白 Shanxibai 河北 Hebei
00001381 东北地丁 Dongbeididing 河北 Hebei
00001504 多穗高梁 Duosuigaoliang 河北 Hebei
00001534 保八斗 Baobadou 河北 Hebei
00001804 八叶青 Bayeqing 山西 Shanxi
00001808 八月齐 Bayueqi 山西 Shanxi
00001810 八叶齐 Bayueqi 山西 Shanxi
00001812 八叶春齐 Bayechunqi 山西 Shanxi
00001817 大娥黄 Daehuang 山西 Shanxi
00001855 大软茭 Daruanjiao 山西 Shanxi
00001864 大山东 Dashandong 山西 Shanxi
00002144 没狼窝 Molangwo 山西 Shanxi
00002333 鸽子眼 Geziyan 山西 Shanxi
00002361 短三尺 Duansanchi 山西 Shanxi
00002401 锣锤穗 Luochuisui 山西 Shanxi
00007828 八月齐 Bayueqi 山西 Shanxi
00007901 斗穗高粱 Dousuigaoliang 山西 Shanxi
00008015 低秆红 Diganhong 山西 Shanxi
00008186 黑眼睛高粱 Heiyanjinggaoliang 山西 Shanxi
00002018 东腰黄高粱 Dongyaohuanggaoliang 内蒙古 Inner Mongolia
00002443 八叶齐 Bayeqi 内蒙古 Inner Mongolia
00002446 八叶齐 Bayeqi 内蒙古 Inner Mongolia
00002500 小红高粱 Xiaohonggaoliang 内蒙古 Inner Mongolia
00002555 大白色 Dabaise 内蒙古 Inner Mongolia
00002591 大高粱 Dagaoliang 内蒙古 Inner Mongolia
00002592 大高粱 Dagaoliang 内蒙古 Inner Mongolia
00002596 大红粮 Dahongliang 内蒙古 Inner Mongolia
00002699 白棒锤 Baibangchui 内蒙古 Inner Mongolia
00003011 朝阳棒槌 Chaoyangbangchui 内蒙古 Inner Mongolia
00008219 小白高粱 Xiaobaigaoliang 内蒙古 Inner Mongolia
00008230 大白色 Dabaise 内蒙古 Inner Mongolia
00008263 白壳白 Baikebai 内蒙古 Inner Mongolia
00003043 八大头 Badatou 辽宁 Liaoning
00003044 八大叶 Badaye 辽宁 Liaoning
00003092 大二户高粱 Daerhugaoliang 辽宁 Liaoning
00003126 小关东白 Xiaoguandongbai 辽宁 Liaoning
00003217 白大秆 Baidagan 辽宁 Liaoning
00003260 打锣锤 Daluochui 辽宁 Liaoning
00003435 高秆大白色 Gaogandabaise 辽宁 Liaoning
00003436 高秆关东青 Gaoganguandongqing 辽宁 Liaoning
00003634 矮青壳 Aiqingke 辽宁 Liaoning
00003659 九三一五 Jiusanyiwu 吉林 Jilin
00004539 黑壳棒 Heikebang 黑龙江 Heilongjiang
00004551 黑壳棒子 Heikebangzi 黑龙江 Heilongjiang
00004595 短棒子 Duanbangzi 黑龙江 Heilongjiang
00008566 顶头红 Dingtouhong 黑龙江 Heilongjiang
00008675 黑壳棒 Heikebang 黑龙江 Heilongjiang
00005015 八叶高粱 Bayegaoliang 山东 Shandong
00005035 小红萼 Xiaohonge 山东 Shandong
00005038 小老头矮高梁 Xiaolaotouaigaoliang 山东 Shandong
00005059 大气厦尾 Daqishawei 山东 Shandong
00005061 大毛衣 Damaoyi 山东 Shandong
00005091 大青壳 Daqingke 山东 Shandong
00005092 大青壳栗母鸡 Daqingkelimuji 山东 Shandong
00005103 大粒红 Dalihong 山东 Shandong
00005110 大黑柳 Daheiliu 山东 Shandong
00005197 打字帽高粱 Dazimaogaoliang 山东 Shandong
00005349 红白粘秫秫 Hongbainianshushu 山东 Shandong
00005487 麦皮子 Maipizi 山东 Shandong
00005624 爱国二号高梁 Aiguoerhaogaoliang 山东 Shandong
00007177 二节红 Erjiehong 甘肃 Gansu
00007178 二牛心 Erniuxin 甘肃 Gansu
00007182 小辈高梁 Xiaobeigaoliang 甘肃 Gansu
00007184 小蛇眼 Xiaosheyan 甘肃 Gansu
00007226 西藏白 Xizangbai 甘肃 Gansu
00007247 秤坨高梁 Chengtuogaoliang 甘肃 Gansu
00007249 黄高梁 Huanggaoliang 甘肃 Gansu
00007251 黑矮高梁 Heiaigaoliang 甘肃 Gansu
00007257 矬高粱 Cuogaoliang 甘肃 Gansu
00007265 矮秆红 Aiganhong 甘肃 Gansu
00007315 柯姆孜中高梁 Kemuzizhonggaoliang 新疆 Xinjiang
00006906 马尾高粱 Maweigaoliang 湖北 Hubei
00009037 大粒高粱 Daligaoliang 湖北 Hubei
00009065 红高粱 Honggaoliang 湖北 Hubei
00009079 独石矮 Dushiai 湖北 Hubei
00009111 矮高粱 Aigaoliang 湖北 Hubei
00007173 软高梁 Ruangaoliang 陕西 Shaanxi
00009822 疙瘩高粱 Gedagaoliang 陕西 Shaanxi
00009883 草高粱 Caogaoliang 陕西 Shaanxi
00009893 黑高粱 Heigaoliang 陕西 Shaanxi
00009903 矮高粱 Aigaoliang 陕西 Shaanxi
00009904 矮脚高粱 Aijiaogaoliang 陕西 Shaanxi
00009905 矮脚黄糯 Aijiaohuangnuo 陕西 Shaanxi
00009929 露仁高粱 Lurengaoliang 陕西 Shaanxi
00010016 达拉牛 Dalaniu 云南 Yunnan
00013028 鼓眼糯 Guyannuo 四川 Sichuan
00013029 鼓眼糯 Guyannuo 四川 Sichuan
00013035 上龙高粱 Shanglonggaoliang 广西 Guangxi
00013036 大粒高粱 Daligaoliang 广西 Guangxi
00013125 阿粱 Aliang 贵州 Guizhou
00013200 褐高粱 Hegaoliang 贵州 Guizhou

Table 1

Descriptive statistics and analysis of variance of identification indexes of 110 sorghum landraces under salt stress"

鉴定指标
Identification index		 平均值
Mean		 范围
Range of variation (%)		 标准差
Standard deviation		 变异系数
Coefficient of variation		 F值
F-value		 P值
P-value
相对发芽势G1 47.09 0-98.89 29.02 61.61 17.77 <0.001
相对发芽率G2 77.13 23.65-101.79 18.72 24.27 11.87 <0.001
相对叶绿素含量S1 88.49 59.53-99.91 7.66 8.66 8.03 <0.001
相对苗长S2 77.35 52.47-95.23 9.53 12.32 14.89 <0.001
相对根长S3 80.26 47.87-100.14 12.00 14.95 7.18 <0.001
相对苗鲜重S4 58.12 27.43-95.28 13.00 22.38 11.93 <0.001
相对苗干重S5 70.74 30.48-98.26 13.75 19.43 7.87 <0.001
相对根鲜重S6 65.36 21.62-100.34 16.85 25.78 9.49 <0.001
相对根干重S7 69.45 31.46-102.13 14.53 20.93 5.68 <0.001

Supplementary table 2

Relative value of traits under salt stress in sorghum at germination and seedling stages"

品种统一编号
Code		 G1 G2 S1 S2 S3 S4 S5 S6 S7
00001067 0.8444 0.9111 0.7852 0.8784 0.9507 0.7170 0.8772 0.5938 0.5791
00001075 0.1984 0.9144 0.9241 0.8709 0.8443 0.7208 0.7760 0.7752 0.7431
00001076 0.4286 0.5333 0.8536 0.5847 0.6121 0.3771 0.5418 0.6079 0.6094
00001079 0.6764 0.7787 0.9824 0.6924 0.7535 0.5135 0.5993 0.5402 0.4937
00001080 0.3221 0.7937 0.9434 0.9467 0.8792 0.8517 0.9804 0.8627 0.8102
00001081 0.8610 0.9095 0.9581 0.9117 0.7272 0.6937 0.7777 0.9688 1.0214
00001082 0.8536 0.8747 0.8641 0.7907 0.9129 0.6151 0.7532 0.5772 0.6315
00001108 0.4530 0.7588 0.9834 0.6988 0.8616 0.6992 0.8627 0.7423 0.7025
00001112 0.9550 0.9360 0.9372 0.7704 0.6803 0.6169 0.7440 0.4602 0.7053
00001121 0.7037 0.8027 0.8564 0.6724 0.8161 0.5955 0.7197 0.6016 0.7715
00001122 0.7929 0.8425 0.9087 0.7404 0.7598 0.5437 0.6504 0.5925 0.6459
00001124 0.8095 0.8183 0.8614 0.8481 0.8785 0.7007 0.8953 0.6894 0.7484
00007606 0.0714 0.8395 0.8284 0.8371 0.8214 0.9370 0.7908 0.7409 0.5269
00007611 0.5690 0.9828 0.6260 0.9221 0.6656 0.5489 0.7130 0.8633 0.9388
00001185 0.1178 0.2874 0.9103 0.6492 0.8046 0.5580 0.8031 0.7476 0.7588
00001256 0.4667 1.0044 0.9787 0.8866 0.9340 0.6485 0.9111 0.8146 0.9458
00001283 0.7113 0.6727 0.9167 0.7473 0.8994 0.4842 0.5978 0.7041 0.8667
00001310 0.5751 0.8862 0.6422 0.7815 0.5649 0.5499 0.6563 0.7902 0.6331
00001315 0.2749 0.6983 0.6854 0.7513 0.6775 0.4899 0.5038 0.4573 0.5699
00001316 0.3743 0.8476 0.8769 0.8327 0.9912 0.6224 0.8076 0.6442 0.6383
00001381 0.7568 0.9266 0.8607 0.6128 0.7925 0.3455 0.5410 0.5432 0.7388
00001504 0.0222 1.0179 0.8468 0.5954 0.9631 0.3261 0.4376 0.6013 0.7437
00001534 0.6210 0.7262 0.8210 0.7107 0.8217 0.4313 0.5857 0.6031 0.8029
00001804 0.0000 0.2652 0.9329 0.8076 0.7960 0.5868 0.6861 0.6597 0.7406
00001808 0.8167 0.9661 0.9341 0.7659 0.9313 0.4220 0.4844 0.8130 0.7374
00001810 0.3859 0.8969 0.9119 0.8320 0.9148 0.6254 0.9668 0.7396 0.8419
00001812 0.9084 0.9556 0.8529 0.8422 0.8375 0.6726 0.8462 0.7564 0.8028
00001817 0.3103 0.8172 0.9433 0.7025 0.8408 0.5889 0.6950 0.6628 0.7225
00001855 0.4664 0.5525 0.9625 0.7658 1.0014 0.5370 0.7023 0.7207 0.8186
00001864 0.3793 0.8793 0.8704 0.9449 0.9436 0.7413 0.8945 0.5668 0.6801
00002144 0.0444 0.3667 0.9648 0.8056 0.8729 0.6085 0.6054 0.4830 0.5513
00002333 0.0333 0.6938 0.8468 0.8419 0.9985 0.7580 0.8897 0.6273 0.7081
00002361 0.8496 0.9663 0.9470 0.7637 0.7366 0.5551 0.7770 0.8768 0.9089
00002401 0.9513 1.0018 0.8916 0.7824 0.7491 0.4106 0.5710 0.7996 0.5940
00007828 0.6689 0.6109 0.7804 0.8454 0.6964 0.6178 0.6704 0.4056 0.4135
00007901 0.8367 0.7845 0.9200 0.6148 0.6227 0.4413 0.5795 0.6704 0.6696
00008015 0.2582 0.6484 0.8332 0.7524 0.8639 0.4745 0.6469 0.4768 0.5099
00008186 0.6688 0.7262 0.8541 0.5961 0.7977 0.4014 0.5465 0.5876 0.6306
00002018 0.2989 0.8889 0.9694 0.8455 0.8176 0.7095 0.9827 0.7296 0.7932
00002443 0.8820 0.9092 0.9356 0.8548 0.8764 0.6049 0.9454 0.5172 0.6281
00002446 0.0357 0.9259 0.9898 0.8194 0.9190 0.6544 0.8692 0.8573 0.7859
00002500 0.4388 0.6617 0.9323 0.6566 0.6477 0.5074 0.6626 0.9147 0.8046
00002555 0.4563 0.5450 0.8860 0.8150 0.7970 0.5430 0.7345 0.8654 0.8380
00002591 0.2900 0.6121 0.9028 0.8445 0.8458 0.5804 0.7993 0.5669 0.8586
00002592 0.4212 0.8453 0.9297 0.8924 0.8485 0.5635 0.6943 0.4375 0.6447
00002596 0.4978 0.7310 0.8097 0.7607 0.9279 0.4126 0.5465 0.4437 0.4845
00002699 0.1563 0.4889 0.8739 0.7587 0.8158 0.6696 0.6614 0.6055 0.4966
00003011 0.9889 0.9540 0.8363 0.8229 0.9757 0.7144 0.8730 0.8242 0.8209
00008219 0.0222 0.8719 0.9392 0.7648 0.9797 0.6093 0.8374 0.5428 0.8165
00008230 0.8703 0.9175 0.8980 0.9043 0.9106 0.7710 0.6897 0.8348 0.6842
00008263 0.8851 0.8556 0.8733 0.7700 0.8291 0.7747 0.6659 0.7492 0.6844
00003043 0.6628 0.8539 0.8653 0.7506 0.8138 0.4351 0.5351 0.7603 0.6698
00003044 0.8385 0.9060 0.8207 0.6079 0.7173 0.3908 0.4925 0.5808 0.5511
00003092 0.6695 0.7460 0.9671 0.6891 0.7581 0.6483 0.6609 0.6485 0.6885
00003126 0.6429 0.7550 0.9471 0.7830 0.8505 0.6885 0.8756 0.7592 0.7607
00003217 0.6717 1.0023 0.8532 0.8128 0.9974 0.6743 0.7580 0.9468 0.8861
00003260 0.5517 0.8667 0.9536 0.7408 0.7312 0.5084 0.7521 0.8114 0.6940
00003435 0.2327 0.8519 0.9923 0.8683 0.7986 0.7132 0.7142 0.7680 0.9434
00003436 0.1962 0.8569 0.8810 0.6303 0.6371 0.5112 0.6475 0.4761 0.5144
00003634 0.2059 0.7783 0.8903 0.7740 0.9288 0.4618 0.5910 0.5395 0.6721
00003659 0.2649 0.4910 0.9322 0.7647 0.9088 0.3904 0.5061 0.4079 0.5855
00004539 0.0936 0.5345 0.9992 0.7059 0.8361 0.4554 0.7001 0.9909 0.8150
00004551 0.7035 0.8731 0.9158 0.8147 0.5621 0.6015 0.7850 0.8785 0.9328
00004595 0.7990 0.8914 0.9333 0.7343 0.8868 0.5741 0.6535 0.8379 0.9554
00008566 0.7963 0.9259 0.8368 0.7881 0.7031 0.7274 0.8474 0.9358 0.8115
00008675 0.8693 0.9310 0.9151 0.8560 0.7602 0.5493 0.7149 0.6657 0.5439
00005015 0.9000 0.9815 0.9508 0.8794 0.8329 0.4962 0.5030 0.7096 0.5684
00005035 0.8071 0.8814 0.8731 0.7642 0.7503 0.6372 0.6281 0.4698 0.6938
00005038 0.4127 0.7273 0.7668 0.5666 0.8018 0.4944 0.5621 0.3306 0.4429
00005059 0.4522 0.9437 0.8428 0.7767 0.7513 0.6854 0.7416 0.7382 0.6894
00005061 0.9881 1.0000 0.8135 0.8100 0.8259 0.7485 0.8690 0.6183 0.6254
00005091 0.6475 0.8446 0.9308 0.7733 0.6979 0.4666 0.6580 0.4696 0.6323
00005092 0.7619 0.8937 0.9297 0.8852 0.7669 0.9528 0.9107 0.8221 0.8219
00005103 0.4068 0.7672 0.9732 0.7967 0.9583 0.5423 0.6888 0.4084 0.6154
00005110 0.7411 0.8569 0.8504 0.7754 0.8076 0.5422 0.6033 0.4392 0.4674
00005197 0.4275 0.7454 0.5954 0.6524 0.9495 0.4170 0.4666 0.4274 0.4730
00005349 0.4532 0.9770 0.9224 0.6474 0.9303 0.5437 0.7454 0.5515 0.7546
00005487 0.4637 0.7652 0.8421 0.9388 0.8921 0.6990 0.6931 0.8080 0.7852
00005624 0.3418 0.9747 0.9676 0.8880 0.9287 0.5974 0.8623 0.3713 0.6054
00007177 0.6089 0.8358 0.9957 0.7863 0.7437 0.5885 0.6639 0.6179 0.7819
00007178 0.3318 0.5237 0.8737 0.5560 0.5161 0.2743 0.4227 0.2162 0.3425
00007182 0.6164 0.7628 0.8766 0.7123 0.6337 0.6602 0.7564 0.6219 0.6062
00007184 0.4506 0.9191 0.8799 0.6715 0.7296 0.5487 0.7963 0.6389 0.8932
00007226 0.6283 0.8908 0.9197 0.8255 0.8307 0.6160 0.6474 0.6334 0.5302
00007247 0.4042 0.7448 0.8720 0.9523 0.6839 0.6975 0.7918 1.0034 1.0001
00007249 0.7104 0.7231 0.9723 0.7760 0.8477 0.6280 0.7102 0.8121 0.8965
00007251 0.0345 0.5250 0.8534 0.7875 0.8607 0.8224 0.9001 0.6637 0.7497
00007257 0.5486 0.8497 0.9093 0.8304 0.8315 0.7241 0.9339 0.7398 0.8061
00007265 0.1636 0.5069 0.8296 0.8402 0.5297 0.5648 0.6329 0.7456 0.5391
00007315 0.4685 0.9112 0.8142 0.6726 0.5952 0.3827 0.5058 0.3687 0.4861
00006906 0.0423 0.5509 0.9141 0.8692 0.6327 0.4536 0.6303 0.3630 0.6325
00009037 0.5294 0.9545 0.9212 0.7787 0.8157 0.7016 0.7346 0.6854 0.6104
00009065 0.1331 0.4617 0.7491 0.6886 0.6909 0.5603 0.6696 0.8746 0.7179
00009079 0.2330 0.6190 0.9826 0.7433 0.9006 0.5401 0.7002 0.6863 0.7463
00009111 0.0303 0.3122 0.9177 0.6040 0.6542 0.4301 0.6384 0.6182 0.7359
00007173 0.0256 0.5460 0.8136 0.9196 0.8674 0.8293 0.9204 0.8069 0.6227
00009822 0.1800 0.9500 0.9000 0.7643 0.8971 0.5266 0.7937 0.7471 0.9474
00009883 0.5868 0.9470 0.7561 0.7675 0.5450 0.5730 0.7815 0.7693 0.7996
00009893 0.3472 0.9692 0.9417 0.7873 0.9383 0.5316 0.7244 0.6574 0.6426
00009903 0.2502 0.8301 0.8593 0.7116 0.6402 0.4467 0.5868 0.3926 0.4363
00009904 0.1895 0.7738 0.8771 0.8812 0.6934 0.7650 0.9759 0.5882 0.7048
00009905 0.7384 0.8247 0.9149 0.7439 0.6216 0.5873 0.7563 0.5256 0.5252
00009929 0.0760 0.2365 0.9278 0.8687 0.7359 0.5641 0.6741 0.6407 0.7282
00010016 0.1191 0.6089 0.8045 0.9486 0.9129 0.7329 0.8539 0.9782 0.8572
00013028 0.6356 0.8741 0.8838 0.7678 0.9230 0.5957 0.6631 0.7897 0.8372
00013029 0.2568 0.3344 0.9774 0.8006 0.9438 0.5522 0.6434 0.5604 0.5790
00013035 0.0000 0.4216 0.8703 0.6068 0.7941 0.3864 0.5123 0.4658 0.5258
00013036 0.0000 0.5810 0.8158 0.7155 0.7624 0.5382 0.6495 0.3777 0.6834
00013125 0.1174 0.6889 0.9574 0.7991 0.8477 0.4651 0.6194 0.5350 0.6207
00013200 0.0617 0.4420 0.7235 0.5248 0.4788 0.3457 0.3048 0.3484 0.3146

Table 2

Correlation coefficients among various indexes under salt stress"

指标Index G1 G2 S1 S2 S3 S4 S5 S6 S7
G1 1
G2 0.593** 1
S1 1
S2 0.136 1
S3 0.257** 0.314** 1
S4 0.115 0.671** 0.263** 1
S5 0.241* 0.616** 0.299** 0.798** 1
S6 0.141 0.386** 0.119 0.454** 0.440** 1
S7 0.281** 0.349** 0.233* 0.342** 0.501** 0.726** 1

Fig. 1

Cluster analysis of salt tolerance of 110 sorghum landraces at germination stage The numerical range in figure is the range of the salt tolerance (based on average membership function value) of various landraces. "

Table 3

Eigen values of three principal components and their contribution and cumulative contribution"

主成分Principal component 特征值Eigen value 贡献率Contribution (%) 累积贡献率Cumulative contribution (%)
I 3.350 47.9 47.9
II 1.076 15.4 63.3
III 1.049 15.0 78.2

Table 4

Loading matrix of each component"

主成分Principal component S1 S2 S3 S4 S5 S6 S7
I 0.351 0.764 0.450 0.820 0.859 0.712 0.723
II 0.780 -0.273 0.401 -0.366 -0.172 0.018 0.262
III 0.133 0.264 0.538 0.209 0.147 -0.586 -0.514

Supplementary table 3

Ranking of Salt tolerance at germination and seedling stages of various landraces"

统一编号
Code		 隶属值
Membership value		 隶属值排序
Rank		 F值
F-value		 F值排名
Rank
00001067 0.859 13 1.0757 32
00001075 0.534 68 1.1006 21
00001076 0.407 86 0.8136 105
00001079 0.689 41 0.9143 86
00001080 0.519 72 1.2184 1
00001081 0.866 12 1.1442 7
00001082 0.840 17 1.0260 48
00001108 0.563 64 1.0900 25
00001112 0.931 5 0.9766 69
00001121 0.718 36 0.9889 65
00001122 0.789 23 0.9544 76
00001124 0.782 24 1.1051 20
00007606 0.422 84 1.0743 33
00007611 0.765 27 0.9897 64
00001185 0.092 107 1.0180 50
00001256 0.727 34 1.1902 2
00001283 0.639 54 1.0156 52
00001310 0.707 38 0.8732 98
00001315 0.435 82 0.8166 104
00001316 0.580 59 1.0786 31
00001381 0.824 19 0.8738 96
00001504 0.511 74 0.8910 94
00001534 0.627 55 0.9338 81
00001804 0.018 110 1.0200 49
00001808 0.880 9 0.9859 67
00001810 0.618 56 1.1436 8
00001812 0.919 6 1.0906 24
00001817 0.529 70 1.0130 57
00001855 0.438 81 1.0833 27
00001864 0.603 57 1.1275 14
00002144 0.106 106 0.9856 68
00002333 0.310 92 1.1285 12
00002361 0.897 7 1.0616 38
00002401 0.971 2 0.9266 83
00007828 0.578 60 0.8936 93
00007901 0.774 25 0.8735 97
00008015 0.394 87 0.9196 85
00008186 0.652 50 0.8703 99
00002018 0.569 62 1.1456 6
00002443 0.876 10 1.0794 30
00002446 0.459 78 1.1474 5
00002500 0.494 77 0.9678 74
00002555 0.428 83 1.0495 41
00002591 0.387 88 1.0655 37
00002592 0.603 58 1.0093 58
00002596 0.568 63 0.8910 95
00002699 0.241 96 0.9695 71
00003011 0.959 3 1.1421 9
00008219 0.418 85 1.0973 22
00008230 0.876 11 1.1059 19
00008263 0.844 16 1.0396 44
00003043 0.730 32 0.9352 80
00003044 0.852 14 0.8176 103
00003092 0.665 48 0.9917 62
00003126 0.657 49 1.1070 18
00003217 0.830 18 1.1390 10
00003260 0.682 42 1.0031 60
00003435 0.511 73 1.1187 16
00003436 0.496 76 0.8561 100
00003634 0.451 79 0.9699 70
00003659 0.297 94 0.9132 87
00004539 0.238 97 1.0488 42
00004551 0.763 28 1.0343 46
00004595 0.823 20 1.0704 35
00008566 0.844 15 1.0724 34
00008675 0.884 8 0.9862 66
00005015 0.932 4 0.9687 72
00005035 0.821 21 0.9562 75
00005038 0.523 71 0.8116 106
00005059 0.681 43 1.0134 56
00005061 0.988 1 1.0505 40
00005091 0.717 37 0.9224 84
00005092 0.806 22 1.1759 3
00005103 0.545 66 1.0156 53
00005110 0.772 26 0.9066 89
00005197 0.542 67 0.8062 107
00005349 0.703 39 1.0162 51
00005487 0.573 61 1.0950 23
00005624 0.645 52 1.0683 36
00007177 0.691 40 1.0141 55
00007178 0.352 90 0.6607 109
00007182 0.649 51 0.9520 77
00007184 0.665 47 1.0024 61
00007226 0.736 31 0.9916 63
00007247 0.530 69 1.1258 15
00007249 0.671 44 1.0887 26
00007251 0.202 102 1.1087 17
00007257 0.670 45 1.1275 13
00007265 0.256 95 0.8970 91
00007315 0.669 46 0.7673 108
00006906 0.223 98 0.9012 90
00009037 0.727 35 1.0321 47
00009065 0.211 100 0.9379 79
00009079 0.363 89 1.0432 43
00009111 0.064 108 0.8946 92
00007173 0.211 101 1.1286 11
00009822 0.548 65 1.0828 28
00009883 0.751 29 0.9465 78
00009893 0.644 53 1.0371 45
00009903 0.506 75 0.8217 102
00009904 0.440 80 1.0809 29
00009905 0.750 30 0.9276 82
00009929 0.039 109 1.0047 59
00010016 0.299 93 1.1644 4
00013028 0.729 33 1.0583 39
00013029 0.193 103 1.0156 54
00013035 0.118 105 0.8361 101
00013036 0.220 99 0.9114 88
00013125 0.349 91 0.9680 73
00013200 0.163 104 0.6079 110

Fig. 2

Cluster analysis of salt tolerance of 110 sorghum landraces at seedling stage The numerical range in figure is the range of the salt tolerance (based on F-value) of various landraces. "

Table 5

Classification of salt tolerance at germination and seeding stages of 110 sorghum landraces"

分类
Classification		 分类名称
Group		 芽期品种编号
The code of landraces at germination stage		 苗期品种编号
The code of landraces at seedling stage
I 高度耐盐品种
Highly salt-tolerant landraces		 00005061, 00002401, 00003011, 00005015, 00001112, 00001812, 00002361, 00008675, 00001808, 00002443, 00008230, 00001081, 00001067, 00003044, 00008566, 00008263, 00001082, 00003217, 00001381, 00004595, 00005035, 00005092. 00001080, 00001256, 00005092, 00010016, 00002446, 00002018, 00001081, 00001810, 00003011, 00003217, 00007173, 00002333, 00007257, 00001864, 00007247, 00003435, 00007251, 00003126, 00008230, 00001124, 00001075, 00008219, 00005487, 00001812, 00001108, 00007249, 00001855, 00009822, 00009904, 00002443, 00001316, 00001067, 00007606, 00008566, 00004595, 00005624, 00002591.
II 耐盐品种
Salt-tolerant landraces		 00001122, 00001124, 00007901, 00005110, 00007611, 00004551, 00009883, 00009905, 00007226, 00003043, 00013028, 00001256, 00009037, 00001121, 00005091, 00001310, 00005349, 00007177, 00001079, 00003260, 00005059, 00007249, 00007257, 00007315, 00007184, 00003092, 00003126, 00008186, 00007182, 00005624, 00009893, 00001283. 00002361, 00013028, 00005061, 00002555, 00004539, 00009079, 00008263, 00009893, 00004551, 00009037, 00001082, 00001804, 00001185, 00005349, 00001283, 00005103, 00013029, 00007177, 00005059, 00001817, 00002592, 00009929, 00003260, 00007184, 00003092, 00007226, 00007611, 00001121, 00008675, 00001808, 00002144, 00001112, 00003634, 00002699, 00005015, 00013125, 00002500, 00005035, 00001122, 00007182, 00009883.
III 盐敏感品种
Salt-sensitive
landraces		 00001534, 00001810, 00001864, 00002592, 00001316, 00007828, 00005487, 00002018, 00002596, 00001108, 00009822, 00005103, 00005197, 00001075, 00007247, 00001817, 00005038, 00001080, 00003435, 00001504, 00009903, 00003436, 00002500, 00002446, 00003634, 00009904, 00001855, 00001315, 00002555, 00007606, 00008219, 00001076, 00008015, 00002591, 00009079, 00007178, 00013125. 00009065, 00003043, 00001534, 00009905, 00002401, 00005091, 00008015, 00001079, 00003659, 00013036, 00005110, 00006906, 00007265, 00009111, 00007828, 00001504, 00002596, 00001381, 00007901, 00001310, 00008186, 00003436, 00013035, 00009903, 00003044, 00001315, 00001076, 00005038, 00005197, 00007315.
Ⅳ 高度盐敏感品种
Highly salt-sensitive landraces		 00002333, 00010016, 00003659, 00007265, 00002699, 00004539, 00006906, 00013036, 00009065, 00007173, 00007251, 00013029, 00013200, 00013035, 00002144, 00001185, 00009111, 00009929, 00001804. 00007178, 00013200.
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