不同节水型小麦新品系籽粒产量对浇水因子相应的综合评判

Comprehensive evaluation on the response of different water-saving wheat new strains'grain yield to watering factors

为了准确评判不同节水型冬小麦新品种(系)的高产性、稳产性及节水特性,精准筛选、取舍小麦新品种(系),以2018年小麦品比试验中的14个品种系为研究材料,测定其在春季分别浇0水、1水和2水的情况下的籽粒产量。运用联合方差分析法和GGEbiplots双标图法比较了不同品种(系)的高产稳产特性,同时评价不同浇水因子的区分力和代表性。结果表明:小区产量在基因型效应、浇水因子效应和互作效应中均存在极显著差异(P<0.01);小区产量随着浇水次数的增加产量提高,平均增产率分别为34.17%和20.71%;新品系V1、V5、V8、V6高产稳产性较好;W0环境即春季不浇水的情况下,环境鉴别力和代表性较好,更有利于筛选节水型新品种。两种方法的综合应用可以达到量化、直观的特点,有利于综合评价新品系及浇水因子效应。

In order to accurately evaluate the high-yield,stable yield and water-saving characteristics of different water-saving winter wheat strains,and accurately screen and select new wheat varieties,the grain yields of 14 wheat strains in 2018 were measured under the conditions of no watering,watering one tine,and watering two times,respectively in spring.The high and stable yield characteristics of different strains were compared by means of joint analysis of variance and GGE biplot method,and the discrimination and representativeness of different irrigation factors were evaluated.The results showed that there were significant differences in genotype effect,watering factor effect and interaction effect for plot yield(P<0.01);the yield of plot increased with the increase of watering times,and the average yield increased by 34.17%and 20.71%,respectively;the new strains V1,V5,V8 and V6 had the better characteristics of high and stable yield.No watering in spring had better environmental discrimination and representativeness,and is more conducive to screening new water-saving strain.The comprehensive application of the two methods can achieve quantitative and intuitive characteristics,which is conducive to comprehensive evaluation of new strains and watering factor effect.