| 摘要: |
| 普通小麦ph突变系为由小麦5B 染色体长臂上的PH基因(抑制部份同源染色体配对的基因)缺失而获得,故有明显促进部份同源染色体配对形成多价体的功能,是当前小麦仅有的有性杂交的载体。然而,现有供试的ph系(包括ph1b,ph1b和ph2)均由中国春小麦(China Spring)诱变而得[1],为适应我国小麦育种开发所需,转育成我国当地品种以及不同生态类型的ph系,已为当务之急。本文着重阐述并已证明以京虹1号春小麦转育ph_(1b)基因一次成功的研究。 |
| 关键词: 中国春小麦 自交结实率 转育 杂交结实率 多价体 基因 部分同源染色体配对 染色体长臂 黑麦 花粉母细胞 |
| DOI： |
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| 基金项目:本研究是自然科学基金 |
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| A STUDY ON THE TRANSFORMATION OF ph_(1b)MUTANT INTO ANOTHER VARIETY OF WHEAT |
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| Abstract: |
| phlb mutant wheat formed by the deficiency of PH-gene on the long arm of 5B chromosome of wheat,it possessed the ability to increase the frequency of homoeologous chromosome pairing and to form mult- ivalent.Therefore,it is an excellent carrier in sexual-hybridizati- on.But now all of the ph mutants including phla phlb and ph_2 were induced by Chinese Spring,in order to suit the needs of wheat bree- ding development,it is an urgent need to transform the ph mutant into our local varieties or various ecotypes... |
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