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Estimation of Genetic Diversity among Oat Genotypes through Agro-morphological Traits

Muhammad Tehseen Zaheer Tanoli, Sardar Ali, Nadar Khan, Malik Ashiq Rabbani, Sher Aslam Khan, Shah Masaud Khan, Khalid Naveed, Muhammad Arif

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Int. J. Biosci.9(5), 35-44, November 2016

DOI: http://dx.doi.org/10.12692/ijb/9.5.35-44

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Abstract

During the present study diverse germplasm comprising 124 oat accessions including three checks was evaluated for various quantitative agro-morphological traits in the research field of PGRI, NARC, Islamabad during the year 2013-14. The principal objective of the research was to study the magnitude of genetic diversity and relationships between different genotypes and to identify promising genotypes of oat for the traits of economical importance. The seed material was collected from diverse ecologies of Pakistan and USA. Most of the traits showed considerable variations. Analysis of variance showed highest variance for number of spikelets spike-1 followed by plant height, seed yield plant-1, days to 50% panicle initiation, days to maturity, leaf length, number of tillers plant-1, spike length,  grains spikelet-1, 100 seed weight, leaves per tiller. Correlation analysis indicated that seed yield per plant was highly significantly and positively correlated with all the studied traits except days to 50% germination which showed non-significant relationship with seed yield per plant.  PCA showed that 3 out of 13 PCs with eigen value of more than 1 accounted for 71.06% of the overall variations found among 124 genotypes of oat. Cluster analysis distributed 124 accessions of oat into five main clusters (I, II, III, IV & V) having 49, 1, 50, 21 and 3 genotypes. These outcomes can be successfully utilized for successful characterization and preservation of oat genetic resources.

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Estimation of Genetic Diversity among Oat Genotypes through Agro-morphological Traits

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