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以带有不同白粉病病斑面积比例的腰果种子为材料,研究不同白粉病侵染程度的腰果种子发芽率及其幼苗生长的差异。结果表明,白粉病病斑面积比例为100%的腰果种子,其发芽率及其幼苗叶片数、直径、株高、叶长、叶宽总体上均显著低于病斑面积比例小于100%的处理;病斑面积比例在50%～99%之间的腰果种子与病斑面积比例小于50%的种子相比,前者幼苗直径显著低于后者,发芽率及其幼苗株高、叶长、叶宽之间的差异未达显著水平。建议在选择腰果种子用于育苗时,选择白粉病病斑面积比例低于50%的种子,以确保种子发芽率及幼苗质量。受白粉病侵染的腰果种子发芽率与其幼苗生长指标之间显著正相关,发芽率高的种子,其幼苗生长相对较好。
The cashew seeds with different proportions of different powdery mildew spots were used as materials to study the germination rate and seedling growth of cashew nuts with different degree of powdery mildew infection. The results showed that the germination percentage, number of leaves, diameter, plant height, leaf length and leaf width of cashew seeds with 100% disease area were significantly lower than those with lesion area less than 100% ; The seedlings with the lesion area ratio of 50% ~ 99% and the lesion area ratio less than 50%, the former seedling diameter was significantly lower than the latter, the germination rate and seedling height, leaf length, leaf length The difference between the widths did not reach significant level. Proposed selection of cashew seeds for seedling, the choice of powdery mildew lesion area of less than 50% of the proportion of seeds to ensure the seed germination rate and seedling quality. The germination rate of cashew seeds infected by powdery mildew was significantly and positively correlated with its seedling growth index, and the seeds with high germination rate had relatively good seedling growth.