论文部分内容阅读
解放以来,我国在小麦锈病的防治和研究方面,积累了大量的经验和资料,但工作的广度和深度,尤其联系生产实际方面,还需要继续深入细致地进行工作。兹提出个人看法,供大家讨论。 一、品种混杂问题:不少地方都有这一问题,以河北省安国县伍仁桥的早洋麦为例,1959年调查,混杂率为35％;1964年在同地调查,混杂率增至43％。品种混杂,从锈病的角度来看,寄主的变异与病原的变异之间有密切的相互关系。在早洋麦的群体中,有很多形态类似早洋麦但对条锈病完全成染的类型。这些变种,可能是由于品种混杂发生天然杂交所致;在上寄生的绣菌,有可能形成对早洋麦能致病的类型,终于使早洋麦完全丧失对条锈病的免疫性。今后如能认真地进行穗选,选得精些,并结合建立留种地以得到较纯的种子。
Since the liberation, our country has accumulated a great deal of experience and information on wheat rust prevention and research. However, the breadth and depth of work, especially in connection with actual production, still require further and detailed work. I hereby give my personal opinion for discussion. First, the variety of mixed problems: In many places have this problem, early spring and wheat in Wu Ren Bridge, Anguo County, Hebei Province as an example, 1959 survey, the confusion rate was 35%; in 1964 in the same place survey, mixed rate increase To 43%. Varieties mixed, from the rust point of view, there is a close relationship between host variation and pathogen variation. Among the groups of early-stage wheat, there are many types that are similar to the early-stage wheat but completely stained with stripe rust. These varieties may be due to hybridization of natural occurrence of hybrids; in the parasitism of the fetus, it is possible to form the type of wheat on the pathogeny, and finally make the early summer wheat completely lost the stripe rust immunity. In the future, if we can earnestly select the earners, select the finest ones and combine them to create more pure seeds for planting.