6个水稻同核异质雄性不育系的双列杂交试验  

Diallel crosses test of six isonuclear alloplasmic CMS lines in rice

作　　者：曲衍进[1] 余显权[1] 赵福胜[1] 李书钦[1] 阳标仁[1] 叶飞[1] 

机构地区：[1]贵州大学农学院,贵州贵阳550025

出　　处：《西南农业学报》2008年第2期257-261,共5页Southwest China Journal of Agricultural Sciences

基　　金：籼型香米“三系”不育系的选育与高产优质组合组配(黔科合2004NGY021);贵州省省长基金“水稻抗冷恢复系选育及抗冷组合组配”(黔省专合字[2004]-11)

摘　　要：应用6个同核异质不育系与7个不同的恢复系按照不完全双列杂交(NCⅡ)设计配制42个杂交组合,对42个组合的单株产量等9个主要性状进行方差分析和配合力分析。结果表明:6个不育系对有效穗、千粒重、穗粒数、着粒密度、单株产量性状上的一般配合力效应显著;6个不育细胞质之间有差异,表现为细胞质效应差异或质核互作效应差异;对参试的组合在单株产量、穗长、结实率三个性状上基因的非加性效应大于加性效应;同一组合在不同性状或不同组合在同一性状上的加性遗传效应和非加性效应均不同。Forty-two hybrid combinations were obtained from six isonuclear alloplasmic CMS lines x seven different restorer lines by using the incomplete diallel crosses design. The results from analyzing their heritability and combining ability of nine main characters showed that six sterile lines had the significant effect on general combinning ability of effective spike, l000-grain weight, spikelet number per spike, grain density and yield per plant,there was difference in cytoplasm and nucleo-eytoplasmic interaction effects among six alloplasmic isonuclcear CMS lines. The non-additive effects were higher than additive effects on characters of yield per plant,spike length and percentage of grain setting in the tested combinations and the additive or non-additive effects were significant on different characters in the same combination or on the same character in different combinations.

关 键 词：同核异质不育系 恢复系 配合力 双列杂交 

分 类 号：S512[农业科学—作物学]