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1 日本晴和Z746 及F2 群体各性状统计参数

Table 1 Statistical parameters of different traits in Nipponbare, Z746, and the F2 population

性状 Trait 平均值±标准差(亲本) Mean±SD (parents) F2群体 F2 population 日本晴 Nipponbare Z746 平均值±标准差 Mean±SD 范围 Range 偏度 Skewness 峰度 Kurtosis 株高Plant height (cm) 87.93±5.32 96.70±2.11** 89.61±8.43 78.00-124.00 2.16 5.33 有效穗数Panicle number per panicle 18.40±5.55 17.70±5.42 14.41±4.56 6.00-28.00 0.67 0.23 穗长Panicle length (cm) 19.68±0.88 20.64±0.62 19.38±1.70 15.86-29.25 1.93 6.44 一次枝梗数Number of primary branch 7.42±0.43 8.05±0.67* 8.36±1.49 6.67-14.47 2.75 7.62 二次枝梗数Number of secondary branch 14.62±1.67 22.99±2.42** 14.59±4.38 7.17-34.73 2.20 6.71 粒长Grain length (mm) 7.40±0.08 8.93±0.19** 7.71±0.57 7.03-9.42 1.16 0.19 粒宽Grain width (mm) 3.44±0.06 2.85±0.11** 3.26±0.56 2.63-3.48 10.85 132.05 长宽比Ratio of length to width 2.15±0.03 3.13±0.15** 2.40±0.34 2.11-3.53 0.56 4.21 结实率Seed-setting rate (%) 91.79±2.02 89.01±2.34* 87.00±11.02 30.00-96.05 -3.25 11.54 每穗总粒数Spikelets per panicle 97.70±23.84 122.66±10.99* 91.75±18.10 62.56-182.67 2.24 7.62 每穗实粒数Grains per panicle 89.68±22.56 109.23±10.58* 78.77±15.17 26.11-166.73 0.90 7.86 千粒重1000-grain weight (g) 25.41±0.91 26.09±0.71 25.34±1.58 18.33-30.10 0.04 2.15 单株产量Yield per plant (g) 38.44±10.23 44.42±15.42 28.87±11.46 9.91-64.25 0.89 0.36