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利用显性雄性核不育基因Tal创建成抗赤霉病基因库,为小麦抗赤霉病育种开辟了一条新的有效途径。作者在基因库第一轮选群体内,对分离单株所作的抗赤霉病性(以下简称抗赤性)分析表明: 1.基因库初始群体的抗性,可育株平均达中抗(MR)级水平,不育株平均达到中感(MS)级水平。 2.在轮回群体中,通过选择,群体总体的抗性水平可以增益。 3.对分离单株的植物学变种分类结果发现,红壳类型小麦抗赤性状较好,抗赤单株出现的频率较高,而白壳类型的抗性相对偏低。 4.在本基因库的遗传背景下,株高与抗性有密切联系。具有良好抗性个体的植株往往偏高。
The use of dominant male sterility gene Tal to create a gene pool resistant to Fusarium head blight has opened up a new and effective way for the breeding of wheat scab resistance. In the first round of gene pool selection, the analysis of the anti-scab resistance (hereinafter referred to as “resistance”) to the isolated plants showed that: 1. The resistance of the initial population of the gene pool and the average fertility of the fertile plants were moderately ( MR), and the average number of infertile plants reached the middle level (MS). 2. In reincarnation groups, the overall resistance level of the population can be increased by selection. The classification of plant varieties of isolated plants showed that red-husk type wheat had better resistance to redness, higher frequency of emergence of red-resistant plants, and lower resistance of white-shell type. In the genetic background of this genebank, plant height and resistance are closely related. Plants with well-resisted individuals tend to be tall.