长江中下游地区常规中熟粳稻产量、品质及氮素吸收性状的相互关系分析

刘秋员, 周磊, 田晋钰, 程爽, 陶钰, 邢志鹏, 刘国栋, 魏海燕, 张洪程

Relationships among grain yield, rice quality and nitrogen uptake of inbred middle-ripe japonica rice in the middle and lower reaches of Yangtze River

LIU Qiu-Yuan, ZHOU Lei, TIAN Jin-Yu, CHENG Shuang, TAO Yu, XING Zhi-Peng, LIU Guo-Dong, WEI Hai-Yan, ZHANG Hong-Cheng

表5 产量与产量构成因素的相关及通径分析

Table 5 Correlation and path analysis of yield and yield components

指标 Trait 简单相关系数 Simple correlation coefficient 直接通径 系数 Direct path coefficients 间接通径系数Indirect path coefficients 决策系数 Decision coefficient 有效穗数 Number of effective panicles 千粒重 1000-grain weight 穗粒数 Spikelet per panicle 结实率 Percentage of filled grain 合计 Total 2017 有效穗数 Number of effective panicles 0.083 0.976 — -0.163 -0.742 0.013 -0.893 -0.791 千粒重 1000-grain weight 0.287** 0.720 -0.222 — -0.180 -0.032 -0.433 -0.105 穗粒数 Spikelet per panicle 0.538** 1.354 -0.535 -0.096 — -0.184 -0.814 -0.376 结实率 Percentage of filled grains -0.253** 0.398 0.031 -0.058 -0.626 — -0.652 -0.360 2018 有效穗数 Number of effective panicles 0.002 0.968 — -0.194 -0.790 0.018 -0.967 -0.933 千粒重 1000-grain weight 0.303** 0.752 -0.250 — -0.242 0.042 -0.450 -0.110 穗粒数 Spikelet per panicle 0.549** 1.399 -0.547 -0.130 — -0.173 -0.850 -0.421 结实率 Percentage of filled grains -0.181 0.359 0.048 0.087 -0.676 — -0.540 -0.259