海滨锦葵种子含油量的遗传分析

Genetic analysis for oil contents of Kosteletzkya virginica seeds

海滨锦葵(Kosteletzkya virginica)是重要的能源油料植物,对海滨锦葵种子含油量进行遗传分析具有重要意义。以高油海滨锦葵品种KV23(P1)和低油海滨锦葵品种KV16(P2)及其杂交组合的F1、F2群体为材料,以单株种子含油量为指标,应用P1、P2、F1和F24个世代的数量性状主基因+多基因混合遗传模型联合分离分析方法,对海滨锦葵种子含油量进行了遗传分析。结果表明,海滨锦葵种子含油量可能由两对加性-显性-上位性主基因+加性-显性多基因共同控制,主基因遗传率为49.87%,主基因和多基因共同解释的遗传率为80.14%。

Kosteletzkya virginica is one of main energy plants. It is important to analyze the inheritance of oil contents of K. virginica seeds. Therefore, Oil contents of each plant of KV23 with high oil contents, KV16 with low oil contents, F1 and F2 populations derived from a cross between them were used as an index. Joint segregation analysis of Major-gene plus Polygenes genetic model of P1, F1, P2 and F2 populations was used to study the inheritance in this article. The results indicated that the inheritance of oil contents of K. virginica seeds was controlled by two additive-dominant-epistatic major-genes plus additive-dominant polygenes, major-genes heritability is 49. 87%, and the total heritability of major-genes plus polygenes was 80.14%.