优良水稻染色体片段代换系Z746的鉴定及重要农艺性状QTL定位及其验证

沈文强, 赵冰冰, 于国玲, 李凤菲, 朱小燕, 马福盈, 李云峰, 何光华, 赵芳明

Identification of an excellent rice chromosome segment substitution line Z746 and QTL mapping and verification of important agronomic traits

SHEN Wen-Qiang, ZHAO Bing-Bing, YU Guo-Ling, LI Feng-Fei, ZHU Xiao-Yan, MA Fu-Ying, LI Yun-Feng, HE Guang-Hua, ZHAO Fang-Ming

表2 水稻重要农艺性状QTL

Table 2 QTLs for agronomic important traits in rice

性状 Trait QTL 染色体 Chr. 连锁标记 Linked marker 估计效应 Additive 贡献率 Var. (%) P值 P-value 株高 Plant height (cm) qPH2-1 2 RM1075 -5.06 15.06 < 0.0001 qPH2-2 2 RM6378 4.11 13.70 0.0037 qPH3-1 3 RM14389 3.17 2.71 0.0108 qPH3-2 3 RM6266 1.92 5.06 0.0258 qPH4 4 RM1155 4.71 16.67 < 0.0001 qPH6-1 6 RM7412 3.01 13.59 0.0009 qPH6-2 6 RM103 -4.13 26.98 0.0075 穗长 Panicle length (cm) qPL2 2 RM1075 -0.99 13.12 < 0.0001 qPL3 3 RM6266 0.39 4.85 0.0346 qPL4 4 RM1155 0.49 4.16 0.0276 qPL6 6 RM7412 0.64 13.81 0.0011 一次枝梗数 Number of primary branch qNPB2-1 2 RM1075 -0.49 4.19 0.0198 qNPB2-2 2 RM6378 0.70 11.59 0.0074 qNPB2-3 2 RM13262 -0.47 5.43 0.0449 qNPB3 3 RM14389 0.46 5.92 0.0424 qNPB4 4 RM1155 1.10 27.43 < 0.0001 qNPB6-1 6 RM7412 0.57 14.32 0.0007 qNPB6-2 6 RM103 -0.87 35.15 0.0023 qNPB6-3 6 RM494 0.63 18.95 0.0165 二次枝梗数 Number of secondary branch qNSB2-1 2 RM1075 -1.42 3.35 0.0366 qNSB2-2 2 RM6378 1.76 7.10 0.0284 qNSB4 4 RM1155 2.01 8.73 0.0015 qNSB6 6 RM7412 1.80 13.81 0.0011 粒长 Grain length (mm) qGL2 2 RM1075 -0.11 3.63 0.0302 qGL3 3 RM6266 0.34 60.28 < 0.0001 qGL4 4 RM1155 0.26 27.47 < 0.0001 qGL6 6 RM7412 0.08 4.77 0.0467 长宽比 Ratio of length to width qRLW2 2 RM13262 0.16 12.97 0.0017 qRLW3 3 RM6266 0.13 14.23 0.0004 qRLW4 4 RM1155 0.15 10.41 0.0005 qRLW6 6 RM7412 0.08 5.30 0.0414 结实率 Seed-setting rate (%) qSSR4 4 RM1155 -0.07 17.33 < 0.0001 每穗粒数 Spikelets per panicle qSP4 4 RM1155 6.24 4.73 0.0122 qSP6 6 RM7412 4.33 4.51 0.0481 千粒重 1000-grain weight (g) qGWT2 2 RM13262 -0.88 14.82 0.0009 qGWT3 3 RM6266 1.13 40.50 < 0.0001