小麦选系“7182-0-11-1”与黑麦可杂交性的遗传分析

STUDIES OF INHERITANCE OF THE CROSSABILITY OF A LINE “7182 0 11 1” OF COMMON WHEAT WITH RYE

小麦选系“７１８２－０－１１－１”与黑麦的可杂交性明显高于传统的高亲和性品系“中国春”。遗传分析表明，“７１８２－０－１１－１”与“中国春”的可杂交性基因一样表现为完全隐性，“７１８２－０－１１－１”除具有“中国春”的３对可杂交性基因，即５Ｂ上的ｋｒ１、５Ａ上的ｋｒ２和５Ｄ上的ｋｒ３外，还具有一个新的可杂交性基因ｋｒ５，位于２Ｂ染色体上，ｋｒ５表现为强效，其效应接近ｋｒ１，小麦可杂交性隐性纯合等位基因间的效应具有可加性。

The crossability of a line “7182 0 11 1” of common wheat ( Triticum aestivum L.) with rye ( Secale cereale L.) is significantly higher than that of Chinese Spring generally recognized as having high crossability with rye.The results of the genetic analysis indicate that the crossability genes of “7182 0 11 1” was completely recessive as that of “Chinese Spring”.“7182 0 11 1” probably carries a new gene relevant to the crossability,presumably kr 5 which is located on the chromosome 2B in addition to crossability genes kr 1 on the 5B,kr 2 on the 5A and kr 3 on the 5D of “Chinese Spring”.The effect of the new gene kr 5 was fairly strong,it appeared to be close to kr 1.The effects of recessive alleles were additive.