摘要:
采用GGE双标图法 ,对11份硫苷组分不同甘蓝型油菜进行4 × 7不完全双列杂交试验 ,旨在对各杂交组合的硫苷组分进行分析 ,从而筛选出其配合力较低的亲本组合来满足降低后代硫苷质量摩尔浓度的要求 .结果显示 :① 对于2-羟-3-丁烯基而言 ,亲本一般配合力(GCA )较低的是父本D21R ,D1R和母本D3AB ,特殊配合力(SCA )较低的是父本91R ,56R和母本D3AB ,SCA较低的组合有S3 × R3 ,S3 × R7和S1 × R3等 ;② 对于3 丁烯基而言 ,亲本GCA较低的是父本15R ,91R和母本Gd1AB ,D3AB ,SCA较低的是父本D1R ,D21R和母本D3AB ,SCA较低的组合有S3 × R3 ,S3 × R7和S1 × R7等;③ 对父本GCA而言 ,3-丁烯基、4-羟-3-吲哚甲基、苯乙基、4-戊烯基与2-羟-3-丁烯基呈正相关 ,苯乙基、4-戊烯基与4-羟-3-吲哚甲基呈负相关 .对母本GCA而言 ,3-丁烯基、4戊烯基与2-羟-3-丁烯基呈正相关 ,苯乙基、4-羟-3-吲哚甲基与2-羟-3-丁烯基呈负相关 ;④ 各杂交组合硫苷组分的表型关系中 ,亲本针对各组分GCA的相关性与母本配合力效应双标图中所显示出来的结果基本一致 .利用GGE双标图分析表明 ,选用D3AB作母本、D21R及D1R作为父本有利于降低杂种后代油菜籽中硫代葡糖苷的质量摩尔浓度 .
Abstract:
This paper reports an analysis of a 4 × 7 incomplete diallel cross of Brassica napus L. using GGE biplot .The following patterns were visualized from the biplots .(1) Across the desulfoprogoitrin ,male parents D21R and D1R had low general combining ability (GCA) ,and 91R and 56R had low specific com-bining ability (SCA) ,female parent D3AB had low GCA and low SCA ,and the combinations with low SCA included S3 × R3 ,S3 × R7 and S1 × R3 .(2) Across the desulfogluconapin ,male parents 15R and 91R had low GCA ,w hile D1R and D21R had low SCA ,female parents Gd1AB and D3AB had low GCA ,w hile D3AB had low SCA ,the combinations with low SCA included S 3 × R3 ,S3 × R7 and S1 × R7 .(3) Across the male parents ,the GCA of desulfogluconapin ,desulfo-4-hydroxyglucobrassicin ,desulfogluconasturtin and desulfoglucobrassicanapin was positively correlated with the GCA of desulfoprogoitrin ,and the GCA of desulfogluconasturtin and desulfoglucobrassicanapin was negatively correlated with the GCA of desulfo-4-hydroxyglucobrassicin .Across the female parents the GCA of desulfogluconapin and desulfoglucobrassi-canapin was positively correlated with the GCA of desulfoprogoitrin ,whereas the GCA of desulfogluconas-turtin and desulfo-4-hydroxyglucobrassicin were negatively correlated with the GCA of desulfoprogoitrin . (4) According to glucosinolate components in the hybrid phenotype relationship ,the correlation of GCA for glucosinolate components of hybrids was consistent with the results on bioblt for female parents .The results on biplot indicated that D3AB × D21R and D3AB × D1R were better than other combinations for ef-fectively reducing glucosinolates .
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