安徽水稻稻曲病菌寄生适合度研究

摘要

[目的]明确安徽省稻曲病菌菌株与品种的寄生适合度。[方法]从安徽15个水稻种植县（市）采集、分离并随机抽选24个菌株，采用人工注射接种诱病的方法，测定其在4个水稻品种上的致病力。[结果]不同菌株接种不同水稻品种后，诱发的稻曲病病穗率、平均穗病粒率和最高穗病粒率差异显著，菌株与品种互作特性明显。[结论]试验结果为稻曲病的预测预报和防治提供了参考。%Objective] To research the parasitic fitness of rice Ustilaginoidea virens in Anhui Province.[Method] A total of 24 strains were ran-domly isolated from 15 rice planting counties (cities) in Anhui Province.The method of artificial inoculation injection induced disease was used to determine the pathogenicity of U.virens in four rice varieties.[Result] After different strains were inoculated to different rice varieties, there were significant differences in diseased ears rate of U.virens, the average rate of diseased grains, and the maximum rate of diseased grains. Strain and variety had significant interaction.[ Conclusion] The research result provides references for the prevention and control of U.virens.