A Study on Combining Ability and Heritability of Agronomic Trait of Indica Hybrid Rice

作     者：PENG Jian ZHU Yi-xiang ZHONG Xu-cheng ZHOU Xiao-ping TANG Xiao-mei LIU Jun YU Jiang-hui 彭建;朱益祥;钟许成;周小平;唐小美;刘俊;于江辉

作者机构：Hunan Academy of Agricultural and Forest scienceChangde 415000PRC Key Laboratory of Agro-ecological Processes in Subtropical RegionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125PRC 

基　　金：科技转化与推广服务(2019〔常财农〕0051-000号) 

出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)

年 卷 期：2020年第21卷第3期

页      码：1-6,12页

摘      要：In present study, under North Carolina design Ⅱ, 5 sterile lines and 2 restorer lines were analyzed by crossing test so as to study the combining ability, habitability and correlation of each major agronomic characters. The results showed that plant height, panicle length, filled grains per plant, grains per plant, 1 000-grain weight, yield per day, yield per plant by parent gene additive effect, seed set of parent gene additive and the additive effect work together, additive effect played a relatively important role, effective tillers per plant by additive genes of the parents and the additive effect had more consistent effects on offspring traits. General combining ability effect analysis showed that the better parents were P1A and R102. The special combining ability of plant height and panicle length in hybrid rice combination was mainly correlated with the general combining ability of restorer line, whereas not with the general combining ability of parent. For the other 7 traits, if the general combining ability of both parents was higher, the special combining ability of hybrid F1 combinations was also higher. The best combination of special combining ability of 9 traits in hybrid rice was P2 A/R102, followed by P1 A/R102.

主 题 词：Hybrid rice Heterosis Combining ability Heritability 

学科分类：09[农学] 0901[农学-植物生产类] 

D　O　I：10.16175/j.cnki.1009-4229.2020.03.001

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