National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present experimental work was carried out at Rice Breeding Section, Pusa, Samastipur, with twenty-two lowland genotypes which were shown in R.B.D. style and were analysed for genetic divergence with the help of Mahalanobis’s D2 statistics.Twenty-two genotypes of rice were grouped into six clusters using Tocher’s method. The cluster I consists of maximum number of genotypes forming the largest cluster followed by cluster VI having three genotypes. The intra cluster distance ranged from 0.00 to 84.45. The inter cluster distance ranged from 52. to 282.49.Thehighest intra cluster distance was observed in cluster VI (84.85) followed by Cluster Ι (67.75). Maximum inter cluster distance was observed between cluster ΙΙΙ and Cluster ΙV followed by cluster ΙΙΙ and cluster ΙV. Per cent contribution of 15 characters and towards total genetic divergence was found maximum for 1000 grain weight (35.5 per cent) followed by days to flowering (22.08 per cent), grain length (17.32 per cent). It was observed that 1000 grain weight ranked 1st maximum times (82) followed by days to flowering (51), grain length (40), plant height (36).The genotype in cluster III and cluster IV due to maximum inter cluster distance between them, exhibited high degree of genetic diversity and thus may be utilized in future for heterosis breeding programme for getting high yielding recombinants.
Citations |
 |
 |
 |
 |
