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dc.contributorSehgal, Akankshaen_US
dc.contributorBhandari, Kalpnaen_US
dc.contributorKumar, Jitendraen_US
dc.contributorAgrawal, Shiv Kumaren_US
dc.contributorSingh, Sarvjeeten_US
dc.contributorSiddique, Kadambot H Men_US
dc.contributorNayyar, Harshen_US
dc.creatorSita, Kumarien_US
dc.identifier.citationKumari Sita, Akanksha Sehgal, Kalpna Bhandari, Jitendra Kumar, Shiv Kumar Agrawal, Sarvjeet Singh, Kadambot H M Siddique, Harsh Nayyar. (1/10/2018). Impact of heat stress during seed filling on seed quality and seed yield in lentil (Lens culinaris Medikus) genotypes. Journal of the Science of Food and Agriculture, 98 (13), pp. 5134-5141.en_US
dc.description.abstractBACKGROUND: Lentil, a cool-season food legume, is highly sensitive to high temperatures, which drastically reduce biomass and seed yield. The effects of heat stress on qualitative and quantitative aspects of seeds are not yet known. RESULTS: In this study, we assessed the effects of high temperatures on quantitative and qualitative aspects of seeds in a heat-tolerant (HT; FLIP2009) and heat-sensitive (HS; IG4242) genotypes in a controlled environment. Initially, the plants were raised in a natural, outdoor environment (22/10 ∘C mean day/night temperature, 1350 ?molm−2 s−1 light intensity, 60–65% relative humidity) fromNovember tomid-Februaryuntil50%flowering (114–115 days after sowing).After that, one set of plants was maintained in a controlled environment (28/23 ∘C, as mean day and night temperature, 500 ?molm−2 s−1 light intensity, 60–65% relative humidity;control) and one set was exposed to heat stress (33/28 ∘C, as mean day and night temperature, 500 ?molm−2 s−1 light intensity, 60–65% relative humidity), where they remained until maturity. Compared to control, heat stress reduced the seed growth rate by 30–44% and the seed-filling duration by 5.5–8.1 days, which ultimately reduced the seed yield by 38–58% and individual seed weights by 20–39%. Heat stress significantly damaged cell membranes and reduced chlorophyll concentration and fluorescence, and the photosynthetic rate, which was associated with a significant reduction in relative leaf water content. The proximate analysis of seed reserves showed that heat stress reduced starch (25–43%), protein (26–41%) and fat (39–57%) content, and increased total sugars (36–68%), relative to the controls. Heat stress also inhibited the accumulation of storage proteins including albumins, globulins, prolamins and glutelins (22–42%). Most of the amino acids decreased significantly under heat stress in comparison to control, whereas some, such as proline, followed by glycine, alanine, isoleucine, leucine and lysine, increased. Heat stress reduced Ca (13–28%), Fe (17–52%), P (10–54%), K (12.4–28.3%) and Zn (36–59%) content in seeds, compared to the controls. CONCLUSIONS: High temperatures during seed filling are detrimental for seed yield and quality components in lentil genotypes,with severe impacts on heat-sensitive genotypes. © 2018 Society of Chemical Industryen_US
dc.publisherWiley (12 months)en_US
dc.sourceJournal of the Science of Food and Agriculture;98,(2018) Pagination 5134,5141en_US
dc.titleImpact of heat stress during seed filling on seed quality and seed yield in lentil (Lens culinaris Medikus) genotypesen_US
dc.typeJournal Articleen_US
cg.creator.idAgrawal, Shiv Kumar: 0000-0001-8407-3562en_US
cg.subject.agrovocstorage proteinsen_US
cg.subject.agrovochigh temperatureen_US
cg.subject.agrovocproximate compositionen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerPanjab Universityen_US
cg.contributor.centerIndian Council of Agricultural Research, Indian Institute of Pulses Research - ICAR-IIPRen_US
cg.contributor.centerPunjab Agricultural University - PAUen_US
cg.contributor.centerThe University of Western Australia - UWAen_US
cg.contributor.crpCGIAR Research Program on Grain Legumes and Dryland Cereals - GLDCen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionSouthern Asiaen_US
dc.identifier.statusTimeless limited accessen_US

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