陇南小麦条锈病的品种遗传多样性控制

为实现陇南小麦条锈病持续控制的目标,以遗传多样性为原则,组建以提高生产品种抗条锈基因丰富度、在锈菌越夏区和越冬区进行基因布局和持久抗性、慢条锈性、高温成株抗性等多种抗性利用为主要内容的控制技术体系。利用Yr10、Yr12、Yr13、Yr16、Yr26、YrC591等有效抗条锈基因的载体品种、Flinor 等持久抗性品种及中四等其它抗源材料育成一批综合性状优良、具有不同遗传背景的抗病品种和类型,其中2004年以来育成的10个品种产量性状有明显提高,在区域试验中较对照增产7.3%~28.9%。陇南小麦条锈病的控制已进入一个新阶段。

Control of wheat stripe rust based on genetic diversity of cultivars in Longnan

In order to achieve sustainable control of wheat stripe rust in southern region of Gansu Province, technical system related to control of wheat stripe rust has been established based on genetic diversity, which comprises enriching resistance genes of commercial cultivars, enforcing distribution in the pathogen over-summer and over-winter regions, and utilizing multi-resistance of durable resistance, slow-rusting and high-temperature adult resistance (HTAP), etc. A series of improved cultivars and disease-resistant types have been bred by using the effective genes Yr10, Yr12, Yr13, Yr16, Yr26, YrC591, etc., as well as the durable resistant cultivars such as Flinor and the other resistant materials such as Zhong 4, which of ten have been improved evidently in yield since 2004 with the yield increase of 7.3%-28.9% in contrast to CK in regional test. These put the control technical system of genetic diversity into a new phase.