| 摘要: |
| 研究了mira等10个马铃薯品种的22个杂交组合无性一代的薯形、皮色、肉色、块茎产量等8个块茎性状的群体遗传和配合力效应。结果表明，单个块茎重的父本遗传力达达56.7%，淀粉含量的母本遗传力和亲本间非加性效应分别达40.5%，44.9%，皮色、块茎产量和结薯数的非加性效应分别达69.1%，82.8%，88.8%；肉色、块茎外观和薯形的加性效应和非加性效应为42.2%～57.8%，相差不大。两个亲本(至少有一个)一般配合力高的杂交组合后代的群体表现，优于双亲具有一般配合力平均值的杂交组合；而双亲具有一般配合力平均值的杂交组合的群体表现优于双亲一般配合力都很低的杂交组合。根据一般配合力选择亲本配制大量杂交组合，并从中筛选优良单株和优良杂交实生籽组合的方法，是马铃薯遗传育种的有效手段。 |
| 关键词: 马铃薯 遗传效应 块茎性状 配合力 |
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| 基金项目:科技部“863”计划项目(2001AA241134)；云南省科技攻关项目(2001NG06) |
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| Combining ability analysis for 8 tuber's main characters in potato (Solanum tuberosum) |
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| Abstract: |
| A study was conducted on 22 crosses from 10 varieties including mira variety to evaluate 8 tuber's main characters in the first-clonal-year potato crops.The results indicated male heritability of single tuber weight was 56.7%,female and non-additive gene actions of starch content was 40.5%,44.9%,respectively,non-additive gene actions of parents for tuber skin-color,tuber yield and the numbers of tuber was 69.1%,82.8% and 88.8%,respectively,which were more important than additive gene actions in the progeny's inheritance.And both additive and non-additive gene actions were found to have the same importance with a preponderance of the later in the inheritance of flesh color,tuber shape and appearance.Progeny means of crosses involving both or at least one parent with good general combining ability was,in general,higher than that of other cross combinations for various characters including tuber yield.Selection of parents based on their general combining ability and crossing them in all possible combinations to select the best single plant or true-seed potato crosses by progeny test would be a suitable breeding strategy for potato crops. |
| Key words: potato (Solanum tuberosum) genetic effects tuber's character combining ability |
