黄河中游地区节节麦抗穗发芽的鉴定与分析

Screening and Analysis of Pre-harvest Sprouting Resistant Germplasm from Aegilops tauschiis in the Middle Reaches of the Yellow River

小麦穗发芽是小麦生产中的主要灾害和重要问题,在普通小麦中缺乏抗穗发芽的品种资源。本试验通过对35份黄河中游地区节节麦1、4份国外节节麦及部分小麦品种的发芽率的测定及抗性多样性分析,综合评价了黄河中游地区节节麦的穗发芽抗性状况。结果表明,节节麦穗发芽抗性普遍高于小麦品种,黄河中游地区节节麦的抗穗发芽能力优于国外材料,其中以T005、T007、T008、T016、T030、T062、T065、T068、T069、T072和T085等11个材料的抗穗发芽能力最强,是小麦穗发芽改良优异的抗源材料。

Pre-harvest sprouting is the devastating disaster of wheat,but varieties resistant to the disaster is rare in common wheat.Germination rate of 35 Ae.tauschii accessions from the middle reaches of the Yellow River,14 Ae.tauschii accessions from abroad,and two wheat cultivars were tested.Meanwhile,diversification analysis classfied the materials into several categories.The results indicated that all Ae.tauschii accessions have stronger pre-harvest sprouting resistance than common wheat,and those from the middle reaches of the Yellow River have stronger pre-harvest sprouting resistance than those from abroad.Among those Ae.tauschii accessions from the middle reaches of the Yellow River,T005,T007,T008,T016,T030,T062,T065,T068,T069,T072 and T085 were identfied to have strongest resistance to pre-harvest sprouting,and could be applied in wheat breeding.