大麦DNA导入小麦产生的性状变异及其遗传表现

Variation of Characters in Wheat after Introduction of Barley DNA and Their Genstic Expression

13 powdery mildew resistance variants were observed in progenies from introducing exogenous DNA of donor 80S-111,a barley variety resistant to Erysphe graminis f.sp.tritici,into recipient Hua 76,an anther culture wheat cultivar susceptible to disease,frequency of the resistance variation being 2.77%.The results of observation and identification from continuous three genera- tions showed that the powdery mildew resistance of the variants obtained was heritable.5 variant lines were not segregating in the resistance and the other 8 variant lines still segregating in the fol- lowing generation,but segregation regularity was not identical.The powdery mildew resistance seemed to be dominant inheritance.