Physiological variations in herbicide tolerance among Chickpea (Cicer arietinum L.) genotypes

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dc.contributor.advisorJagmeet Kaur
dc.contributor.authorKawaljit Kaur
dc.date.accessioned2017-06-08T10:58:23Z
dc.date.available2017-06-08T10:58:23Z
dc.date.issued2016
dc.description.abstractThe present investigation was carried out in field area of the Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana during rabi season 2015-16 to evaluate the variations in herbicide tolerance in chickpea genotypes. A field experiment was conducted in factorial randomized block design using twenty four genotypes and three treatments (unsprayed, imazethapyr and carfentrazone-ethyl). According to our studies, both herbicides caused change in phenological development of plants. The early flowering and maturity was found in herbicide tolerant genotypes. Significant variations were recorded in physiological parameters (leghaemoglobin content, leaf area index, photosynthetic efficiency, hill reaction activity, cellular respiration and malondialdehyde content) during reproductive phase displaying that herbicides affect physiological processes in the plant. There was an upregulation in malondialdehyde content in sensitive genotypes. A negative effect of herbicidal treatments on yield attributes (yield/plant, pods/plant and 100-seed weight) was observed. From physiological parameters and yield attributes, genotypes were assorted as tolerant and sensitive from each treatment. Six genotypes (three sensitive GL 12021, GLW 125, GL 27023 and three tolerant GLW 11, GL 10047, PDG 4) following carfentrazone-ethyl treatment and (three sensitive JG 1362, GL 28203, GL 12021 and three tolerant GL 11026, GLW 44, PBG 5) following imazethapyr treatment were further evaluated for biochemical evaluation. It was shown that during reproductive phase, total soluble sugars, total proteins, total free amino acids and proline content in leaves were elevated in tolerant genotypes of each treatment. Anti-oxidative defence system was studied from leaves and it was found to be hiked in tolerant genotypes. This work emphasizes that genpotypes GLW 11, GL 10047, PDG 4 and GL 11026, GLW 44, PBG 5 are apt for the post-emergence herbicide tolerance.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810018901
dc.keywordsChickpea, Imazethapyr, Carfentrazone-ethyl, Genotypes, Growth, Physiological variations, biochemical estimationsen_US
dc.language.isoenen_US
dc.pages62en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemPhysiological variations in herbicide tolerance among Chickpea (Cicer arietinum L.) genotypesen_US
dc.subBotanyen_US
dc.subjectnullen_US
dc.themeChickpeaen_US
dc.these.typeM.Scen_US
dc.titlePhysiological variations in herbicide tolerance among Chickpea (Cicer arietinum L.) genotypesen_US
dc.typeThesisen_US
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