Diversity Analysis of Local Land Races and Improved Germplasm of Rice (Oryza Sativa L.) Under Allahabad Agro–Climatic Conditions

Amit Prashant Rathor; Ashish Singh; G. Suresh Babu; G.R. Lavanya; Yuvraj Yadav

Volume : IV, Issue : VIII, August - 2014

Diversity Analysis of Local Land Races and Improved Germplasm of Rice (Oryza Sativa L.) Under Allahabad Agro–Climatic Conditions

Amit Prashant Rathor, Ashish Singh, G. Suresh Babu , G. R. Lavanya, Yuvraj Yadav

Abstract :

In this dynamic era of agriculture development and rapidly changing in climatic conditions it is necessitate to continuous evaluation of rice germplasm and local rice land races. In this regard, 40 rice accessions were selected including eleven local land races and one local check NDR 359 evaluate in Allahabad agro&ndash;climatic reason to study available variation in the population. Analysis of variance revealed highly significant differences for all morph agronomical traits studied. In general, Phenotypic Coefficient of Variation (PCV) was higher than (GCV) for various characters. Highest Phenotypic Coefficient of Variation (%) and Genotypic Coefficient of Variation (%) were observed in grain yield per hill (g) and number of spikelet&rsquo;s per panicle whereas, lowest in days to maturity, test weight (g) and days to 50% flowering. However, lowest difference between GCV and PCV was observed in most of the traits studies. Highest of heritability were observed for number of spikelets per panicle and test weight and high genetic advance were observed for number of spikelet&rsquo;s per panicle and plant height (cm). The estimates of phenotypic coefficient between pairs of characters revealed that seed yield has a strong positive significant association Tillers/ Hill, Panicles/ Hill, Panicle Length (cm), Biological Yield (gm), harvest Index (%), Spikelet&rsquo;s/ Panicle, Test Weight (gm). Hence, Main focused should be given on these traits during selection to improve lines. Wards minimum cluster diagram and principal component analysis was used to estimation the pattern of variation in the population. First four PC scored 78.6% variation and cluster diagram represent five different clusters. Cluster I contained 12 accessions, cluster II contained 1 accession, Cluster III contained 3 accessions, Cluster IV contained 10 and Cluster V contained 14. the present study conclude that improved rice germplasm accounted more variability in comparison to local land races therefore, required improvement in local land races.