中国春ph1b突变体与Ae.umbellulata杂交及回交种子的产生

Cross between Chinese Spring ph1b Mutant and Ae.umbellulata and Production of Backcross Seeds

对（中国春ｐｈ１ｂ突变体×Ａｅ．ｕｍｂｅｌｕｌａｔａ）Ｆ１和（中国春×Ａｅ．ｕｍｂｅｌｕｌａｔａ）Ｆ１花粉母细胞减数分裂中期Ⅰ染色体配对情况观察表明，ｐｈ１ｂ可以诱导普通小麦与Ａｅ．ｕｍｂｅｌｕｌａｔａ间的部分同源染色体配对。同时首次用普通小麦对（中国春ｐｈ１ｂ突变体×Ａｅ．ｕｍｂｅｌｕｌａｔａ）Ｆ１回交获得了成功，证明利用ｐｈｌｂ基因通过诱导部分同源染色体配对，可以把Ａｅ．ｕｍｂｅｌｕｌａｔａ中的有益基因转移到普通小麦中。

Observation of chromosome pairing of PMCs of (Chinese Spring ph1b mutant Ae.umbellulata) F1 and (Chinese SpringX]Ae.umbellulata) F1 indicated that ph1b could induce homoeologous chromosome pairing between common wheat and Ae.umbellulata. For the first time the backcross seeds of (Chinese Spring ph1b mutant Ae.umbellulata) F1 with common wheat were obtained,at the same time, possibility of transferring desirable genes from Ae.umbellulata to common wheat was invesitgated via inducing homoeologous chromosome pairing by using ph1b gene.