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近年来,粟瘟病在山西省中部及东南部严重发生危害,輕者减产,重者籽粒不收。作者于1962—1963年进行了粟品种間抗病性的初步观察,簡报如下: 在本所試驗地和山西省晋东南区各县良种繁殖場谷子品种区域試驗地共調查品种520个。調查时期:重点品种分苗期、拔节期、拔节末期、抽穗盛期、乳熟期进行;一般品种只在发病盛期(即抽穗盛期)进行。在自然条件下未感染粟瘟病的品种,再在溫室中种植,进行人工接种。抗病性鑑定結果如下: (一)尚未发現有免疫品种。 (二)不同品种对栗瘟病的抗病性有显著差异:在发病盛期調查,高度抗病品种61个,占总数12％,发病指数为0.1—10;抗病品种149个,占总数28.7％,发病指数为10.1—20.0;輕度感病品种128个,占总数24.6％;发病指数为20.1—
In recent years, the devastating disease occurred in the central and southeastern part of Shanxi Province. In 1962-1963, the authors conducted a preliminary observation on the disease resistance of the millet cultivars. The briefing is as follows: 520 varieties were investigated in the pilot area of the trial and in the regional trial of the millet breed in the southeast of Shanxi Province in southeastern Shanxi. Survey period: the key varieties at seedling stage, jointing stage, the end of jointing, heading stage, milky stage; common species only in the peak of the disease (ie, the peak of heading). In the natural conditions did not infect the varieties of the blast, and then planted in the greenhouse, artificial inoculation. Disease resistance identification results are as follows: (A) has not been found with immune species. (B) There were significant differences in disease resistance between different varieties of chestnut blast. During the full bloom period, 61 highly resistant varieties accounted for 12% of the total, with an incidence index of 0.1-10; 149 resistant varieties, accounting for 28.7 %, The incidence index was 10.1-20.0; 128 mild susceptible varieties, accounting for 24.6%; the incidence index was 20.1-