Comparative study of standard heterosis for yield and its attributes in bread wheat under two different water regimes

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-07-06 DOI:10.1017/s1479262123000412

D. Chaudhary, S. Prashant, J. Jaiswal, Rohit Rohit, Sivendra Joshi

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Abstract

Water stress conditions have occurred in the past in various places of the world, affecting the yield and production of numerous crops, including wheat. The aim of this research was to estimate standard heterosis under two different water regimes for grain yield and its attributes in 33 crosses, which were obtained by crossing 11 lines and 3 testers in a Line × Tester mating design. The best cross combinations for yield and contributing traits under irrigated condition were C4, C8, C33, C24, and C23, compared to both checks HD2967 and PBW660. Whereas, in rainfed condition, C18, C14, C26, C21, and C20 crosses were superior to the checks. For both irrigated and rainfed conditions, the best cross combinations identified were C29, C15, C32, C2, and C31. As a result, these cross combinations could be used in wheat breeding programmes to improve bread wheat genotypes for increased grain yield, agro-morphological features, and water stress tolerance. The presence of high heterosis for yield-contributing traits not only aids in the development of hybrids by exploiting heterosis but also in the production of transgressive segregants to develop elite lines.

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两种不同水分条件下面包小麦产量及其性状标准杂种优势的比较研究

过去在世界许多地方都发生过缺水情况，影响了包括小麦在内的许多作物的产量和生产。本研究利用11个品系和3个品系的杂交设计，对33个杂交组合在两种不同水分条件下的籽粒产量及其性状进行了标准杂种优势评价。与HD2967和PBW660相比，灌水条件下产量和贡献性状的最佳杂交组合为C4、C8、C33、C24和C23。而在雨养条件下，C18、C14、C26、C21和C20的杂交表现优于对照。在灌溉和旱作条件下，最佳杂交组合为C29、C15、C32、C2和C31。因此，这些杂交组合可用于小麦育种计划，以改善面包小麦基因型，提高粮食产量、农业形态特征和对水分胁迫的耐受性。高产性状高杂种优势的存在，不仅有利于利用杂种优势培育杂种，而且有利于产生越界分离，培育优良品系。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.