增加穗粒数的水稻染色体代换系Z747鉴定及相关性状QTL定位

王大川,汪会,马福盈,杜婕,张佳宇,徐光益,何光华,李云峰,凌英华,赵芳明

Identification of rice chromosome segment substitution Line Z747 with increased grain number and QTL mapping for related traits

Da-Chuan WANG,Hui WANG,Fu-Ying MA,Jie DU,Jia-Yu ZHANG,Guang-Yi XU,Guang-Hua HE,Yun-Feng LI,Ying-Hua LING,Fang-Ming ZHAO

表1 日本晴和Z747及F2群体各性状统计参数

Table 1 Statistical parameters of different traits in Nipponbare, Z747, 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 Z747 平均值±标准差 Mean±SD 范围 Range 偏度 Skewness 峰度 Kurtosis 株高 Plant height (cm) 88.1±3.4 91.8±6.9 91.9±8.2 68.0-130.8 0.39 0.31 穗长Panicle length (cm) 19.7±1.2 23.3±1.3** 19.3±1.6 14.8-27.3 -0.18 0.57 有效穗数Panicle number 19.3±5.1 15.5±6.4 15.6±5.5 3.0-36.0 0.40 -0.03 一次枝梗数Number of primary branch 7.4±0.5 12.2±1.3** 8.5±1.1 6.9-13.4 -0.15 0.27 二次枝梗数Number of secondary branch 14.3±1.7 40.5±1.2** 15.1±4.3 7.4-45.6 0.03 0.71 每穗总粒数Spikelet number per panicle 110.7±16.4 173.0±49.6** 94.3±19.9 21.9-221.7 -0.19 0.39 每穗实粒数Grain number per panicle 101.4±16.5 139.8±41.2 79.4±15.6 10.1-142.5 -0.23 0.65 结实率Seed setting rate (%) 91.0±2.0 81.0±0.7** 85.1±12.9 10.9-96.3 -2.17 10.44 粒长Grain length (mm) 7.17±0.24 7.93±0.04** 7.45±0.47 6.61-10.05 0.36 1.81 粒宽Grain width (mm) 3.40±0.08 3.23±0.05* 3.34±0.13 2.38-3.52 -0.38 0.26 千粒重1000-grain weight (g) 24.6±1.6 25.5±0.7 25.5±1.8 21.0-32.3 0.28 1.27 单株产量Yield per plant (g) 38.6±9.8 40.9±5.3 31.7±12.4 2.4-72.5 0.45 0.20