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作物学报 ›› 2018, Vol. 44 ›› Issue (11): 1673-1680.doi: 10.3724/SP.J.1006.2018.01673

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

水稻品种魔王谷粒形、剑叶性状和株高QTL定位

彭伟业1,孙平勇2,潘素君1,李魏1,戴良英1,*()   

  1. 1 湖南农业大学植物保护学院, 湖南长沙 410128
    2 湖南杂交水稻研究中心 / 杂交水稻国家重点实验室, 湖南长沙 410125
  • 收稿日期:2018-03-27 接受日期:2018-07-20 出版日期:2018-11-12 网络出版日期:2018-07-30
  • 通讯作者: 戴良英
  • 基金资助:
    本研究由国家重点研发计划项目(2016YFD0300700);湖南省自然科学基金项目(2016JJ3071)资助(2016JJ3071)

Mapping QTLs for Grain Shape, Flag Leaf Traits, and Plant Height in Rice Variety Mowanggu

Wei-Ye PENG1,Ping-Yong SUN2,Su-Jun PAN1,Wei LI1,Liang-Ying DAI1,*()   

  1. 1 College of Plant Protection, Hunan Agricultural University, Changsha 410128, Hunan, China
    2 State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha 410125, Hunan, China
  • Received:2018-03-27 Accepted:2018-07-20 Published:2018-11-12 Published online:2018-07-30
  • Contact: Liang-Ying DAI
  • Supported by:
    This study was supported by the National Key Research and Development Program of China(2016YFD0300700);the Natural Science Foundation of Hunan Province, China(2016JJ3071)

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摘要：

以粳稻魔王谷和籼稻CO39配组衍生的280个重组自交系为材料, 2015年和2016年对其粒形、剑叶形态、株高性状进行了相关性分析和QTL检测。剑叶长分别与粒厚和株高存在极显著负相关和正相关, 剑叶宽与粒宽存在极显著正相关。检测到17个粒形QTL, 分布于第1、第2、第3、第4、第5、第6、第7、第9和第10染色体上, 贡献率为3.51%~48.65%; 其中, 第3染色体RM6080-RM6283区间对粒长和千粒重兼具显著作用, 第5染色体RM8211-RM3381区间同时影响粒宽和粒厚。检测到12个控制剑叶形态性状的QTL, 分布于第1、第3、第4、第6、第7和第9染色体上, 贡献率为4.26%~38.40%; 有5个多效QTL区间, 其中, 第4染色体RM252-SFP4_6区间同时控制剑叶长、剑叶宽、剑叶面积和粒长, 第9染色体RM257-RM3909区间同时影响剑叶面积和粒长。只检测到一个控制株高的QTL, 位于第1染色体的RM6333-RM5536区间, 是一个主效QTL, 贡献率为28.76%。这些结果为进一步开展粒形、剑叶形态、株高基因的精细定位、克隆和分子辅助育种奠定了基础。

关键词: 水稻, 粒形, 剑叶, 株高, QTL定位

Abstract:

In this study, 280 recombinant inbred lines (RIL) derived from a cross between japonica rice Mowanggu and indica CO39 were used to analyse correlations and detect QTLs for grain shape, flag leaf morphology and plant height in 2015 and 2016. The flag leaf length was significantly negatively and positively correlated with grain thickness and plant height, respectively. And there was a significant positive correlation between flag leaf width and grain width. Here, we identified 17 QTLs for grain shape traits distributed on chromosomes 1, 2, 3, 4, 5, 6, 7, 9, and 10 respectively, which could explain 3.51%-48.65% of total phenotypic variance. Among of them, the region between markers RM6080 and RM6283 on chromosome 3 significantly influenced both grain length and thousand-grain weight, while RM8211-RM3381 interval on chromosome 5 influenced both grain width and grain thickness. On the other hand, 12 QTLs controlling the flag leaf traits were identified on chromosomes 1, 3, 4, 6, 7, and 9, respectively, which explained 4.26%-38.40% of the phenotypic variance. In addition, five QTL regions showing pleiotropic effects were identified. For example, the marker RM252-SFP4_6 interval on chromosome 4 could control flag leaf length, flag leaf width, flag leaf area and grain length; and the RM257-RM3909 interval on chromosome 9 was responsible for flag leaf area and grain length. Furthermore, there was a major QTL controlling plant height was identified in the interval of RM6333-RM5536 on chromosome 1, which explained 28.76% of the phenotypic variance. All these results provide a foundation for fine mapping, cloning and marker assisted selection of favorable genes related to grain shape, flag leaf traits and plant height.

Key words: rice, grain shape, flag leaf, plant height, QTL mapping

表1

亲本及重组自交系群体9个农艺性状的表现"

性状
Trait		 魔王谷
Mowanggu		 CO39 重组自交系RIL
均值±标准差
Mean±SD		 变幅
Range		 变异系数
CV (%)		 峰度
Kurtosis		 偏度
Skewness
粒长 GL (mm) 9.43** 7.98 8.49±0.76 6.87-10.28 8.95 -0.54 0.45
粒宽GW (mm) 4.39** 3.28 3.44±0.32 2.50-4.10 9.37 -0.03 -0.47
粒长宽比GL/GW 2.15 2.43 2.50±0.36 1.85-3.75 14.37 1.32 0.99
粒厚 GT (mm) 2.48** 2.07 2.11±0.14 1.72-2.59 6.71 -0.04 0.06
千粒重TGW (g) 39.54** 22.44 24.53±3.46 14.94-33.38 14.12 -0.41 0.05
剑叶宽FW (cm) 2.50** 1.49 1.90±0.38 1.22-3.20 20.16 0.58 0.76
剑叶长FL (cm) 35.61 32.40 40.36±8.82 22.50-74.00 21.87 0.93 0.77
剑叶长宽比FL/FW 14.25** 21.79 21.88±5.67 11.67-44.40 25.92 1.35 0.97
株高 PH (cm) 143.30** 91.33 128.69±19.74 83.90-186.33 15.34 -0.19 0.38

表2

重组自交系群体中9个农艺性状的相关系数"

性状
Trait		 粒长
GL		 粒宽
GW		 长宽比GL/GW 粒厚
GT		 千粒重
TGW		 剑叶宽
FW		 剑叶长
FL		 剑叶长宽比
FL/FW
粒宽GW -0.09
粒长宽比GL/GW 0.70** -0.76**
粒厚 GT 0.01 0.69** -0.47**
千粒重TGW 0.56** 0.42** 0.06 0.59**
剑叶宽FW -0.14* 0.23** -0.23** 0.06 0.01
剑叶长FL -0.01 -0.03 0.01 -0.21** -0.09 0.25**
剑叶长宽FL/FW 0.10 -0.19** 0.18** -0.21** -0.08 -0.53** 0.67**
株高 PH -0.05 0.07 -0.09 -0.04 0.05 0.06 0.34** 0.23**

表3

魔王谷/CO39 F8群体中检测到的控制粒形、剑叶形态和株高的QTL"

性状
Traita		 QTL 染色体
Chr.		 标记区间
Marker interval		 LOD 值
LOD scores		 贡献率
R2(%)		 加性效应1)
Additive 1)
粒长
GL		 qGL3 3 RM6080-RM6283 29.60 48.65 0.57
qGL4 4 RM252-SFP4_6 3.27 5.25 -0.17
qGL9 9 RM257-RM3909 3.04 3.57 0.14
粒宽
GW		 qGW1 1 RM5536-RM6840 4.07 6.51 0.08
qGW2 2 RM263-RM6366 4.42 6.02 0.08
qGW3 3 RM3134-RM1284 10.06 17.38 0.14
qGW5-1 5 RM8211-RM3381 4.19 13.41 -0.12
qGW5-2 5 RM1237-RM405 10.51 25.86 0.16
qGW6 6 RM527- SFP6_2 2.75 3.51 0.05
粒厚
GT		 qGT1 1 RM3627-RM3475 5.05 10.47 0.05
qGT2 2 RM3732-RM7082 3.95 5.62 0.04
qGT3 3 RM5474-RM3392 11.06 17.51 0.06
qGT5 5 RM8211-RM3381 2.76 4.88 0.03
qGT10 10 RM258-RM8201 3.64 11.43 0.05
千粒重
TGW		 qTGW1 1 RM6333-RM5536 4.06 8.78 1.05
qTGW3 3 RM6080-RM6283 10.71 24.05 1.78
qTGW7 7 RM8261-RM5720 3.88 7.87 0.99
剑叶长
FL		 qFL1 1 RM220-RM582 4.23 9.99 -2.74
qFL4 4 RM252-SFP4_6 2.64 4.82 1.92
qFL6 6 RM225-SFP6_1 2.84 5.69 2.08
qFL7 7 RM1134-RM5672 5.37 9.60 2.98
剑叶宽
FW		 qFW1 1 RM5389-RM6333 5.60 8.24 -0.11
qFW3 3 RM3564-RM5548 6.79 13.06 0.14
qFW4 4 RM252-SFP4_6 18.68 38.40 0.24
剑叶面积
FA		 qFA1 1 RM220-RM582 5.70 16.14 -7.55
qFA3 3 RM3564-RM5548 4.11 7.73 5.20
qFA4 4 RM252-SFP4_6 10.74 20.02 8.38
qFA6 6 RM225-SFP6_1 3.44 6.48 4.79
qFA9 9 RM257-RM3909 2.99 4.26 -3.94
株高 PH qPH1 1 RM6333-RM5536 9.77 28.76 10.64

图1

RIL群体中检测到的QTL以及已克隆的主效QTL在染色体上的分布 Sd1、Nal1、GS3、GS5、qSW5、PGL1为已克隆的主效QTL。"

表4

本研究定位与过去已经定位的控制粒形、剑叶形态和株高性状的QTL比较"

性状
Trait		 染色体
Chr.		 本研究定位区间
Interval in this study		 参考文献定位区间
Interval in reference		 克隆的基因
Cloned gene		 参考文献
Reference
粒长 GL 3 RM6080-RM6283 GS63-SF19 GS3 Fan et al.[2]
粒宽 GW 3 RM3134-RM1284 C1488-R663 — Zhou et al.[22]
5 RM8211-RM3381 S2-RM574 GS5 Li et al.[6]
5 RM8211-RM3381 MS40671-M16 qSW5 Ayahiko et al.[5]
5 RM8211-RM3381 RM169-RM1237 — Zhang et al.[23]
粒厚 GT 1 RM3627-RM3475 RM11169-RM 1183 — Dong et al.[24]
10 RM258-RM8201 C1488-R663 — Zhou et al.[22]
剑叶宽 FW 3 RM3564-RM5548 RM7000-RM514 — Luo et al.[25]
4 RM252-SFP4_6 M3-M4 Nal1 Qi et al.[10]
剑叶面积FA 1 M220-RM582 RM490-RM243 — Jiang et al.[26]
1 M220-RM582 RM490-RM 243 — Tong et al.[27]
1 M220-RM582 RM259-RM 243 — Peng et al.[28]
株高 PH 1 RM6333-RM5536 RG220-R2414 Sd1 Sasaki et al.[12]; Spielmeyer et al.[13]; Monna et al.[14]
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