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小麦根腐病Bipolaris sorokiniana(S-acc.)Shoem是小麦全生育期的一种病害,苗期引起根腐,成株期引起叶斑、叶枯、穗腐和种子黑胚。该病害在西北、东北和华北冬春麦区普遍发生,在河南省也有多年的历史,但过去只是在部分地区偶尔零星发生,而近几年随着农业生态条件的变化和一些感病品种的推广应用,病害逐年加重,特别是成株期的叶枯,严重降低小麦产量,穗腐引起的种子黑胚又降低了小麦的品质,己成为严重影响河南省小麦生产的病害之一。为了给小麦新品种的选育和推广提供依据,作者对黄淮麦区的20个小麦品种(系)进行了成株期抗病性研究。
Wheat root rot disease Bipolaris sorokiniana (S-acc.) Shoem is a disease during the whole growth period of wheat. It causes root rot at the seedling stage and leaf spot, leaf blight, ear rot and seed black embryo at the adult stage. The disease occurs frequently in winter and spring wheat fields in northwestern, northeastern and northwestern China, but also in Henan Province for many years. However, in the past, sporadic occurrences occurred in some areas occasionally. In recent years, with the change of agroecological conditions and the susceptibility of some susceptible cultivars Popularization and application of the disease increase year by year, especially in the adult plant leaf blight, a serious reduction in wheat yield, ear rot caused seeds black and reduce the quality of wheat has become seriously affected the production of wheat in Henan Province one of the diseases. In order to provide a basis for the breeding and popularization of new wheat varieties, the authors studied the adult plant resistance of 20 wheat cultivars (lines) in Huanghuai wheat area.