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作 者 ：曾宋君,梁承邺,梁敬琨,陈宝源

期 刊 ：热带亚热带植物学报 1997年 5卷 4期 页码：56~61

关键词：两系杂交水稻；杂种优势；农艺性状；

Keywords:Two-line hybrid rice, Heterosis, Agronomic character,

摘 要 ：本研究观察了18个两系杂交水稻组合在华南地区种植时杂种优势表现。结果表明：三种类型两系杂交组合主要农艺性状优势强弱呈现出籼粳交＞籼爪交＞籼籼交＞三系杂交组合（对照）；同一杂交组合早晚季种植表现差异较大；亚种间杂种优势利用的主要问题是结实率和谷草比比较低。

Abstract:Comparative study of agronomic characters in 18 combinations of two-line hybrid rice indicated that the heterosis was shown to be in the order: Indica/Japonica>Indica/ Javanica>Indica/Indica>there-line hybrid rice" Weiyu 64". The same two-line hybrids showed different heterosis performance between early and late season rices. Low seed setting and low grain-straw ratio were the main problems for utilization of indica-Japonica hybrid.

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