大麦白化颖壳突变体的遗传、生理及品质分析

Heredity,Physiology and Malt Quality Analysis of Albino-Lemma Barley

对啤酒大麦苏啤3号的自然突变体品系0601的白化颖壳性状进行了遗传分析,并比较了突变体和野生型在农艺性状(千粒重、饱满度等),生理性状(叶绿素含量、原花色素含量)及麦芽品质性状(糖化力、净出率、库尔巴哈值)等方面的差异。结果表明,白化颖壳性状由1对隐性核基因控制;突变体和野生型在千粒重、籽粒饱满度、叶绿素含量、糖化力、浸出率等方面存在显著差异,而原花青素含量差异不显著。这些结果为分子标记定位白化颖壳性状基因及最终克隆该基因奠定了基础,同时也为遗传学的基础研究提供了很好的材料。

The barley 0601 is a spontaneous albino-lemma mutant from beer barley cultivar Supi3. Genetic control of albino-lemma trait in the mutant 0601 and, the agronomic traits （thousand kernel weight, kernel plumpness）, physiological traits （chlorophyll content, proanthocyanidin content） and major malt qualities （diastatic power, malt extract, Kolbach index） were investigated. The results showed that the albino-lemma trait is controlled by one recessive gene, and there were significant differences between the mutant and its wild-type in thousand kernel weight, kernel plumpness, chlorophyll content, diastatic power, and the malt extract, whereas no significant difference in proanthocyanidin content was found. These results provide the basis on mapping and cloning the albino-lemma gene and also provide good material for genetic research.