期刊论文

Optimal Characters of High-Yield Varieties in Early Rice

中文

中国水稻科学

1001-7216

1993

01

30-36

10.16819/j.1001-7216.1993.01.007

国家自然科学基金；

本校为第一机构

在1989～1990年两年试验的基础上,对19个早籼和8个早粳高产品种的193个性状的育种值进行了逐步回归和通径分析。结果表明:1) 早籼高产品种共有谷草比、草株生物产量、成熟时绿叶剩存率、蜡熟期剑叶胞间CO_2浓度等10个理想型性状,由这10个理想型性状建立的回归方程其预测准确率均在93.87%以上且X~2测验效果好;2) 早粳高产品种共有移栽时最大叶长、主茎倒二节间直径等7个理想型性状,由这7个理想型性状建立的回归方程其预测准确率均达97.47%以上,且x~2测验效果好:3) 有3个理想型性状的广义遗传力高(>0.92),其它理想型性状的广义遗传力均为中等(0.50～0.76)。就几个特别重要的理想型性状对产量的作用...

Based on the two years(1989-1990) experimental data, stepwise analysis and path analysis were conducted for the breeding values of 193 characters of 19 early indica and 8 early japonica high-yield varieties. Theresuits indicate: 1) There are all 10 optimal characters such as grain and straw ratio, biological yield per plant, residual rate of green leaf in full ripening stage, CO_2 concentration between cells of flag leaf at dough stage in early indica high-yield varieties. The forecast correctness rate of regression equation set up by the 10 optimal characters are all above 93.8%; 2) There are...