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通过3×2不完全双列杂交配制6个杂交籼稻组合,对和水稻开花期高温耐性相关的花药基部开裂长度和宽度(the length and width of basal dehiscence of anther,BDL,BDW)以及花药顶部开裂长度和宽度(length and width of apical dehiscence of anther,ADL,ADW)4个性状进行遗传分析。结果表明,实验材料的不同组合间花药基部开裂性状存在极显著差异。BDL、BDW和ADW的遗传中加性和非加性效应都很重要。BDW和ADW均以利用一般配合力为主,双亲互作对BDL和ADL具有重要作用。BDL、BDW和ADW的广义遗传力较高,适合于早代选择,而ADL受环境影响较大。显著相关存在与BDL和BDW及ADL间,通过对BDL的选择可以达到对BDW和ADL选择的目的。本研究加深了对水稻花药开裂性状遗传机理的了解。
Six hybrid indica rice combinations were prepared by 3 × 2 incomplete diallel crossings. The length and width of basal dehiscence of anther (BDL, BDW) and anther top dehiscence Length and width of apical dehiscence of anther (ADL, ADW) four traits for genetic analysis. The results showed that there were extremely significant differences in the cracking resistance of anthers at different combinations of experimental materials. Both additive and non-additive effects in the inheritance of BDL, BDW and ADW are important. Both BDW and ADW are dominated by general combining ability, and parental interaction plays an important role in BDL and ADL. The broad heritability of BDL, BDW and ADW is high, suitable for early generation selection, while ADL is greatly affected by the environment. Significantly associated with BDL and BDW and ADL, through the choice of BDL BDW and ADL can achieve the purpose of selection. This study deepens the understanding of the genetic mechanism of anther dehiscence in rice.