| 摘要: |
| 利用一组6个亲本的60个三交后代，按照Ponnuuswamy和Das提出的模型，分析了这6个亲本在三交中的作为祖亲和作为亲本的配合力。分析结果表明，不仅不同品种一般配合力相差很多，即使同一品种，一般配合力在不同杂交顺序中表现也不一致。亲本的选择和杂交顺序的决定可根据各品种的不同类型一般配合力效应以及有关的配合力效应方差大小来进行。三交时，3个品种均应具有较高一般配合力效应。以单株产量为冽，品种2（Sallivan）作为国外品种适于做祖亲而品种4（绿七蛐）适于做亲本。根据试验结果讨论了在三交中亲本选择和决定杂交顺序的问题。 |
| 关键词: 三交,祖亲及亲本配合力,杂交顺序 |
| DOI： |
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| 基金项目:国家自然科学基金!39370437 |
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| Combining Ability Analysis of Parents in a Triallel Design in Wheat |
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| Abstract: |
| Combining ability of grand parents and parents were analyzed in a triallel designwith 6 parents and 6O three-way crosses based on the model proposed by Ponnuuswamy andDos in wheat. The results indicated that the general combining ability was different not onlyamong different parents, but also different for same parent in different crossing order. Selec-tion and the decision of crossing order of the parent should based on the different type ofgeneral combining ability and variance of specific combining ability effect. Higher generalcombining ability effect for all the three parents was suggested for three-way cross making.In the experiment, the parent 2, Sallivan, introduced from abroad, was a good grand parentfor yield per plant but parent 4, Luqiyou, a native breeding line, an excellent parent. Parentselection and order effects of parents in three-way cross were discussed based on the resultsof the experiments. |
| Key words: three-way cross,combining ability of grand parents and parents,order effect |
