IntechOpen eBooksPub Date : 2026-02-20DOI: 10.5772/intechopen.1014503
Rebecca Zengeni, Nozibusiso Mbava
{"title":"Selection of Wheat (Triticum Aestivum) Genotypes to Improve Water Use Efficiency for Grain, Biomass Yield, and Carbon Sequestration","authors":"Rebecca Zengeni, Nozibusiso Mbava","doi":"10.5772/intechopen.1014503","DOIUrl":"https://doi.org/10.5772/intechopen.1014503","url":null,"abstract":"Plants can sequester carbon, thereby mitigating climate change and improving soil fertility. Studies have focused on plant carbon (C) storage or on water use efficiency (WUE) for grain and biomass production, while variations between genotypes have been ignored. The objective of this study was to compare WUE for grain yield (GY), plant biomass (PB), and plant carbon stocks (PCs) of selected wheat genotypes under different water regimes. This was done under field and greenhouse conditions using 100 wheat genotypes from CIMMYT, grown at 25% (water-stressed) and 75% (non-stressed) field capacity in an alpha lattice design. Treatments were replicated twice in the field and three times in the glasshouse. Results showed average wheat GY of 326 to 2062 gm, shoot biomass of 1873 to 3726 gm while average PB was 2992 to 6289 gm. Grain carbon stocks averaged 132 and 167 g C m in the glasshouse under stressed and non-stressed conditions respectively. The total PC ranged from 691 to 3093 gm in the glasshouse, and 835 to 4016 gm in the field. WUE for grain yield production (WUE-GY) ranged from 0.12 to 2.10 gmmm in the glasshouse, while it was 0.57 to 4.01 gmmm in the field under stress. Varietal performance also varied with LM75 having higher WUE-GY under stress while LM48 and LM47 had lower WUE-GY under non-stressed conditions. LM75 and BW162 were ranked best for WUE-PC, while BW162 was best for WUE-root C stocks under water-stress. Variability in storing C under different water availability thus existed among wheat genotypes.","PeriodicalId":521459,"journal":{"name":"IntechOpen eBooks","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.intechopen.com/citation-pdf-url/1238916","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147878917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}