1RS·1BL易位染色体对小麦品质特性及其地域稳定性的影响  

Effect of 1RS·1BL Translocation on Wheat Quality Traits and Their Stability in Different Ecological Regions

作　　者：唐昊[1] 李治[2] 杨靖[2] 任天恒[2] 唐宗祥[2] 符书兰[2] 晏本菊[1,2] 任正隆[2] 

机构地区：[1]四川农业大学生命科学学院成都教学部,四川成都611130 [2]四川农业大学农学院,四川成都611130

出　　处：《麦类作物学报》2015年第8期1050-1056,共7页Journal of Triticeae Crops

基　　金：国家自然科学基金项目(31271722);四川省教育厅育种专项(2011-2015)

摘　　要：为了探索1RS·1BL易位染色体对小麦品质特性的影响及其在不同生态地域的稳定性效应,将由含新1RS·1BL易位染色体的小麦新品种川农17和不含1RS·1BL易位染色体的绵阳11杂交后选育的一套高代自交系(RILs)同时种植于南方麦区的四川邛崃和北方麦区的河南新乡,分析各株系组在不同地域的品质特性。结果表明,1RS·1BL易位染色体的存在对面团形成时间、稳定时间和粉质质量指数均有显著的负效应,在北方麦区的负效应比南方麦区更大,达到了5%的显著性水平;降落值在不同的小麦生态区对1RS·1BL的存在显示了不同的反应,导致RILs群体中不同株系的品质特性在不同小麦生态区之间的稳定性降低。降落值在南方麦区的表现显著地低于北方麦区,部分地掩盖了1RS·1BL在南方麦区的品质效应。稳定时间在不同地域间显示了不稳定,表明稳定时间的选择存在更多的变数。但是,这些品质特性在不同株系组中的分布趋势是一致的,表明无论在哪个株系组,都有比较优质的株系存在,表明在不同的生态地域选育含1RS·1BL易位染色体的高产、抗病、优质新品种是可能的。In the present study the effects of 1RS·1BL translocation on wheat quality traits and their stability in different ecological regions were studied by using a set of recombinant inbred lines（ RILs） developed from the cross between wheat cultivars Chuannong 17（ 1RS ·1BL） and Mianyang 11（ non 1RS ·1BL）,which were grown in Xinxiang,Henan and Qionglai,Sichuan,respectively. The results indicated that 1RS · 1BL translocation had a significant and negative effect on the mean values of development time（ DT）,dough stability（ ST）,and farinograph quality number（ FQN）. Stronger effects were observed grown in the north region of Henan than in the south region of Sichuan. Different effects on wheat quality of 1RS·1BL in different ecological regions were observed for falling number,which reduced the stability of quality traits of the RILs in different regions. The dough stability exhibited the most instability between two regions. The falling number of the RILs was significant lower in the south region than in north region,which inhibited partly the expression of other quality traits in the south region. However,a similar distribution tendency of these quality traits was found inall plant groups of RILs,which indicated the high quality lines would exist in the lines either with or without1RS·1BL translocation,and suggested that it was possible to develop the 1RS·1BL wheat cultivar with high yield,high quality and good resistance to diseases.

关 键 词：重组自交系(RILs) 1RS·1BL易位 小麦品质 降落值 稳定时间 

分 类 号：S512.1[农业科学—作物学] S330