摘要
采用田间判断小麦赤霉病的发病级别或者检测刚收获小麦的病粒率，分析小麦赤霉病田间发病级别与其麦粒脱氧雪腐镰刀菌烯醇（ＤＯＮ）含量之间以及病粒率与麦粒ＤＯＮ含量之间的关系，结果表明它们之间都有极显著的相关性。小麦田间发病级别为２级以上时，麦粒的ＤＯＮ含量＞１０００μｇ／ｋｇ，４级以上时，麦粒的ＤＯＮ含量＞２０００μｇ／ｋｇ；在病粒率＜２５％时，ＤＯＮ含量＜１２００μｇ／ｋｇ，病粒率在２５％～４０％时，ＤＯＮ含量为１２００～２２００μｇ／ｋｇ，病粒率＞４０％时，ＤＯＮ含量＞２２００μｇ／ｋｇ。本研究采用卫生部食品卫生监督检验所建立的薄层色谱分析法测定样品中的ＤＯＮ含量，ＤＯＮ平均回收率为９１．２％。
On
basis of the disease grade of wheat scab (DGWS) or disease grain rate of wheat scab estimated
after harvest,the author analysed the relationship between DGWS and DON contents of wheat
grain.Results showed that the relationship in both cases were very significant.When the
disease grade reached more than No.2,the DON content of the wheat grain were more than 1000
g per kg; When the disease grade was more than No.4 , the DON content of wheat grain reached
more than 2000 g per kg.When the DGWS reached less than 25%,the DON content of wheat
grain was less than 1200 g per kg;the disease grain rate of wheat scab was 25%-40%,the DON
content of wheat grain was 1200-2200 g per kg, and the disease grain rate reached more than
40%,the DON content of wheat grain was more than 2200 g per kg.
出处
《植物病理学报》
CAS
CSCD
北大核心
1999年第1期41-44,共4页
Acta Phytopathologica Sinica
