期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

1992

04

897-905

10.13331/j.cnki.jhau.1992.04.005

国家自然科学基金；

本校为第一机构

以22个晚釉和14个晚粳高产品种为材料,考察测定了193个性状。在方差分析的基础上根据性状育种值进行了逐步回归分析和通径分析。结果表明:晚釉高产品种共有主茎倒二节间直径、灌浆中期百粒日增重、谷草比、黄熟期绿叶指数等10个理想型性状;晚粳高产品种共有成熟时剑叶实长、全生育期、抽穗期单株根千重等10个理想型性状。由此理想型性状所建立的晚籼、晚粳优化回归方程x~2测验效果极佳,且对每个参试品种产量的预测准确率均在93.25%以上。

193 characteres of 22 late indica and 14 late japonica high-yield varieties weremeasured in this study. Stepwise regression and path analysis were conducted based onbreeding values of characteres after variance analysis. The results indicate: there are all 10optimal characteres such as diameter of the second internode from the top in main stem, dailyincreasing weight of 100 grain in the middle stage of the milking, grain to straw ratio, greenleaf index in complete ripeness stage in late indica high-yield varieties. There are all 10optimal characteres such as flag leaf length in ripeness stage,...