Identification of heat tolerant hybrids based on morphological traits and selection indices

dc.creatorLongmei, N.
dc.creatorGill, G.K.
dc.creatorKumar, R.
dc.creatorZaidi, P.H.
dc.creatorPal, L.
dc.date2021-01-28T01:05:16Z
dc.date2021-01-28T01:05:16Z
dc.date2020
dc.date.accessioned2023-07-17T20:06:48Z
dc.date.available2023-07-17T20:06:48Z
dc.identifierhttps://hdl.handle.net/10883/21184
dc.identifier10.20546/ijcmas.2020.906.226
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7512970
dc.descriptionDevelopment of climate resilient cultivars is necessary for maize production as increased temperature have negative impact on maize yield. Selection based on grain yield along with stress-adaptive secondary traits could help in the development of improved, stable heat stress tolerant cultivars. The current study was conducted to identify reliable and effective secondary traits associated with heat stress tolerance in tropical maize. A Six hundred and sixty two double haploid lines derived from nine bi-parental pedigree populations were phenotyped under natural heat stress and optimal condition. Evaluation was carried out under optimal and natural heat stress condition by sowing on 1st week of February and March to expose the reproductive stages and grain filling period during heat stress. Various morphological traits under study were significantly affected by heat stress. ASI found negative correlation and direct effect while EH observed positive correlation and direct effect under heat stress condition. In both conditions, grain yield found positive and significant correlation with STI, MP and GMP as indicated the better heat stress tolerant indices toward Yp and Ys. Results of this study showed that the DH line, DH_1_178 identified as heat tolerant line since this DH line had high grain yield in both conditions and this line can used in future heat tolerant breeding programme.
dc.description1814-1823
dc.languageEnglish
dc.publisherExcellent Publishers
dc.rightsCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose
dc.rightsOpen Access
dc.source6
dc.source9
dc.source2319-7706
dc.sourceInternational Journal of Current Microbiology and Applied Sciences
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectMorphological Traits
dc.subjectMAIZE
dc.subjectHEAT STRESS
dc.subjectMORPHOLOGY
dc.subjectSELECTION INDEX
dc.subjectCLIMATE CHANGE
dc.titleIdentification of heat tolerant hybrids based on morphological traits and selection indices
dc.typeArticle
dc.typePublished Version
dc.coverageIndia


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