Investigation of Genetic Diversity of Multan Genotypes of Rice Tarom Joladar in M2 Generation

In order to evaluate the genetic diversity in 115 rice mutant genotypes of Tarom Jalodar, a randomized complete block design with three replications was conducted at Sari Agricultural Sciences and Natural ResourcesUniversity. Eleven quantitative traits were evaluated. Analysis of variance showed that there is a significant difference between the genotypes for the morphological traits.The correlation coefficients between traits showed that flag leaf width, number of tillers, number of grains and 100-grain weight had a positive and significant correlation with grain yield.Based on cluster analysis, rice genotypes were divided into three groups. Stepwise regression analysis showed that panicle length, 100-grain weight and number of unfilled grain explain 58.9 % of variation of yield Results of path analysis showed that the most direct and positive effects obtain from number of tillers (0.59) and 100-grain weight (0.37).Results of the main principle component analysis (PCA) reveaed that the four main components justify 70.15% of the total data variation.In general, the results showed that genotypes 109, 64 and 75, due to the more number of tillers, higher length of panicle, the more100-grain weight and less number of unfilled grain were chosen as desirable genotypes, they can be used in the following program