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本文是报道小麦品种感染赤霉病的程度差异及其有关因素。温室试验,在麦穗终花期分别对残留于颖外的花药;残留于颖内的花药;无残留花药的子房上,进行接种。三种处理的赤霉病发生量之比,浙麦1号(感病)为15:58:31,苏麦3号(抗病)为4:18:13。结果表明:品种间差异显著;两品种均以外露花药上接种的处理发病最轻,颖内接种.有残留花药发病加重,尤以浙麦1号为明显;两品种始病后的病情扩展速度有异,苏麦3号表现扩展慢、穗轴不受侵害。因此,一个品种的穗部全部颖花中残留花药比率低,是减缓初侵染病程的性状;小穗和穗轴组织减缓病情发展,是抗扩展性状。具备两者,则相对抗性较为稳定。室内外对普通小麦品种不同成熟阶段的接种试验表明,抗病品种具有感病期短、乳熟期的抗性明显增强和接种后发病盛期较晚等特点。
This article reports the differences in the degree of scab in wheat cultivars and related factors. In the greenhouse experiment, the anthers remaining outside the inflorescences, the anthers remaining within the inflorescences, the ovaries without residual anthers, respectively, were inoculated at the final stage of wheat ears. The ratio of the three treatments of Fusarium head blight was 15:58:31 for Zhemai 1 (susceptible) and 4:18:13 for Sumai 3 (resistant). The results showed that there was significant difference among the varieties, the lightest incidence of inoculation on the two varieties was inoculation, the inoculation in Ying Ying.The incidence of residual anther aggravated, especially in Zhejiang wheat 1, Different, Sumai 3 performance slow expansion, coax from infringement. Therefore, the percentage of remaining anther in all the spikelets of a cultivars was low, which was the characteristic of slowing the course of initial infection. Spikelets and cob tissues were slowing the progression of the disease and were resistant to expansion. With both, the relative resistance is more stable. Inoculation experiments of common wheat varieties at different mature stages both indoors and outdoors showed that the resistant varieties had the characteristics of short susceptibility period, milky mildew resistance and late blooming period after inoculation.