摘要
应用UV-C辐射强度和辐射时间的乘积确定照射剂量,在不同的UV-C辐射剂量下,设不同的接种时间和不同的贮存温度和光照条件,测定了苹果采后炭疽病的发病率和发病指数。结果表明,控制苹果采后炭疽病的最适UV-C照射剂量为7.5kJ·m-2。UV-C照射2d后,人工接种发病指数最低,紫外照射结合13℃低温贮存,果实发病率、发病指数明显低于对照。低剂量UV-C照射能降低苹果炭疽病的发病率和发病指数,抑制苹果采后炭疽病的发生、发展。低剂量紫外线照射可诱导苹果的抗病性,且其诱导具有时间性。UV-C照射后光照与黑暗贮存控制炭疽病的效果差异不显著。
After being irradiated with UV-C light of various dosages and artificially inoculated with colletotrichum gloeosporioides, the incidence rate and the index of anthracnose of apple fruits were examined. The results showed that UV-C light of 7.5 kJ·m^-2 was appropriate dose for controlling infection rate and lesion area expansion of apple fruits. Disease resistance of post-harvest anthracnose in apple were induced 2 days after UV-C treatment inoculated with colletotrichum gloeosporioides, the disease infection was reduced effectively. Storage in 13 ℃ after UV-C treatment was better than 24 ℃. There was no significant difference in controlling apple anthracnose between storage in visible light and darkness after being irradiated with UV-C light.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2006年第4期1081-1083,共3页
Journal of Agro-Environment Science
基金
国家自然科学基金(40175029)
江苏省"333工程"项目
关键词
UV—C
苹果
采后病害
苹果炭疽病菌
UV-C
apple
post-harvest disease
colletotrichum gloeosporioides
