Assessment of genetic diversity among elite maize (Zea mays L.) genotypes adapted to North Western Himalayas

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dc.contributor.advisorLata, Swaran
dc.contributor.advisorLata, Swaran
dc.contributor.authorJyoti
dc.contributor.authorJyoti
dc.date.accessioned2022-07-14T07:06:09Z
dc.date.available2022-07-14T07:06:09Z
dc.date.issued2019-07-31
dc.date.issued2019-07-31
dc.description.abstractThe present investigation entitled “Assessment of genetic diversity among elite maize (Zea mays L.) genotypes adapted to North Western Himalayas” was undertaken to assess the genetic diversity in maize genotypes using morpho-molecular markers and identification of potential genotypes for yield, its components and nutritional traits. The experimental material comprised of 40 maize genotypes along with four diverse checks. These genotypes were raised in alpha RBD design replicated twice during kharif 2018. Data were recorded on grain yield per plant and various morphometric traits along with reaction to prevalent diseases. Genetic diversity among different genotypes was studied on the basis of morphological traits using Mahalanobis D 2 -statistic and PCA. The analysis was done as per the standard statistical procedures and molecular analysis was done using NTSYS-pc (version 2.02) software. Analysis of variance revealed significant mean sum of squares due to genotypes for all the traits suggesting ample amount of variability among them. High PCV, GCV was observed for grain yield per plant with moderate h 2 bs and genetic advance indicated the presence of additive and non additive gene action which provided the scope for improvement through hybridization and selection. On the basis of D 2 analysis three genotypes viz., CML 435, CML 551 Y and CML 295BBB showed superiority over the best check for grain yield and its related traits and almost similar grouping pattern in SSR diversity analysis. Overall, it can be concluded that CML 334 and CML 452 was observed as best genotypes for yield, its related traits and also resistant to bacterial stalk rot whereas moderately resistant to banded leaf and sheath blight. So these potential genotypes can be used as donor parents after further evaluation in the future breeding programmeen_US
dc.description.abstractThe present investigation entitled “Assessment of genetic diversity among elite maize (Zea mays L.) genotypes adapted to North Western Himalayas” was undertaken to assess the genetic diversity in maize genotypes using morpho-molecular markers and identification of potential genotypes for yield, its components and nutritional traits. The experimental material comprised of 40 maize genotypes along with four diverse checks. These genotypes were raised in alpha RBD design replicated twice during kharif 2018. Data were recorded on grain yield per plant and various morphometric traits along with reaction to prevalent diseases. Genetic diversity among different genotypes was studied on the basis of morphological traits using Mahalanobis D 2 -statistic and PCA. The analysis was done as per the standard statistical procedures and molecular analysis was done using NTSYS-pc (version 2.02) software. Analysis of variance revealed significant mean sum of squares due to genotypes for all the traits suggesting ample amount of variability among them. High PCV, GCV was observed for grain yield per plant with moderate h 2 bs and genetic advance indicated the presence of additive and non additive gene action which provided the scope for improvement through hybridization and selection. On the basis of D 2 analysis three genotypes viz., CML 435, CML 551 Y and CML 295BBB showed superiority over the best check for grain yield and its related traits and almost similar grouping pattern in SSR diversity analysis. Overall, it can be concluded that CML 334 and CML 452 was observed as best genotypes for yield, its related traits and also resistant to bacterial stalk rot whereas moderately resistant to banded leaf and sheath blight. So these potential genotypes can be used as donor parents after further evaluation in the future breeding programmeen_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810185457
dc.keywordsgenotypes,diversity, grain.en_US
dc.keywordsgenotypes,diversity, grain.en_US
dc.language.isoEnglishen_US
dc.pages129en_US
dc.pages129en_US
dc.publisherpalampuren_US
dc.publisherpalampuren_US
dc.subGenetics and Plant Breedingen_US
dc.subGenetics and Plant Breedingen_US
dc.themeassess the genetic diversity in maize genotypes using morphological and molecular markers and identify the potential genotypes for yield, its components and nutritional traits.en_US
dc.themeassess the genetic diversity in maize genotypes using morphological and molecular markers and identify the potential genotypes for yield, its components and nutritional traits.en_US
dc.these.typeM.Scen_US
dc.these.typeM.Scen_US
dc.titleAssessment of genetic diversity among elite maize (Zea mays L.) genotypes adapted to North Western Himalayasen_US
dc.titleAssessment of genetic diversity among elite maize (Zea mays L.) genotypes adapted to North Western Himalayasen_US
dc.typeThesisen_US
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