普×爆后代3个膨爆特性的遗传分析

采用三倍体胚乳种子性状遗传模型及其分析方法对5个普通玉米自交系与4个爆裂玉米自交系间20个杂交组合8个世代进行研究。结果表明:3个膨爆特性指标同时受直接、母体和细胞质效应3种遗传体系控制,且以加性效应为主,非加性效应也起着非常重要的作用;普通玉米自交系会显著降低普×爆后代的膨爆特性,爆裂玉米自交系的作用相反,不同自交系的各类遗传效应不完全一致。

Genetic Analysis of Three Popping Characteristics for the Progenies Derived from Normal Corn×Poppcorn Inbred Lines

The triploid endosperm seed genetic model and its analysis method was used to study the the heredity of 3 popping characteristics, using 8 progenies derived from 20 crosses between 5 normal corn and 4 popcorn inbred lines. The result showed that 3 popping characteristics were controlled by 3 kinds of genetic systems simultineously, direct, maternal and cytoplasmic effects. Althought additive effects played the most important role in their heredity, non-additive effects also had great role. Normal corn inbreds could make the popping characteristics of such progenies low, while popcorn inbreds made them high. The predicted genetic effects for different inbreds were various.