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选择被认为对水淹有较好抗性的6个大豆基因型品种,检测其在洪水灾害下土传真菌对大豆的作用。试验在1996年到1998年进行,6个基因型大豆进行垄上单行种植,设置不同水淹处理,分别为无水淹、出苗时水淹(持续3 d)和第四个叶节期水淹(持续7 d)。在水淹处理3~4 d后,统计出苗率,并在每个小区采集15株大豆样本,进行称重,并调查根部褪色比率,分离鉴定根上真菌及其他丝状微生物。试验结果显示,与无淹水相比在
Six soybean genotypes, which were considered to be better resistant to flooding, were selected to test the effect of soil-borne fungi on soybean under flood disasters. The experiment was carried out from 1996 to 1998. Six genotypes of soybean were planted on the ridge in a single row with different flooding treatments, namely flooding without flooding, flooding with seedling emergence (for 3 days) and flooding with the fourth leaf stage (For 7 days). After flooding for 3 to 4 days, the rate of emergence was counted. Fifteen soybean samples were collected in each plot and weighed. The root fading ratio was investigated, and root fungi and other filamentous microorganisms were isolated and identified. The test results show that compared with no flooding