EVALUATION OF RICE (ORYZA SATIVA L.) GENOTYPES BASED ON AGRO-MORPHOLOGICAL TRAITS AND GENETIC DIVERSITY

L. BOMIT¹, S.K. NOREN²*, R. SHARMA^3
1School of Crop Improvement, Central Agricultural University, Imphal, 795004, Manipur, India
²School of Crop Improvement, Central Agricultural University, Imphal, 795004, Manipur, India
³School of Crop Improvement, Central Agricultural University, Imphal, 795004, Manipur, India
* Corresponding Author : norensingh27@gmail.com

Received : 01-11-2018     Accepted : 27-11-2018     Published : 30-11-2018
Volume : 10     Issue : 22       Pages : 7493 - 7497
Int J Agr Sci 10.22 (2018):7493-7497

Keywords : D2 statistics, Agro-morphology, Divergence, Cluster
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to School of Crop Improvement, Central Agricultural University, Imphal, 795004, Manipur, India
Author Contribution : All authors equally contributed

The present study was undertaken to characterize different rice genotypes for agro-morphological characters, to identify different rice genotypes for better yield and to study the genetic diversity between the rice genotypes for use in rice improvement. Forty rice cultivars were collected from different parts of Manipur and grown in a randomized block design with three replications at the farm of College of Agriculture, Central Agricultural University, Imphal during Kharif season of 2015. The analysis of variance among the genotypes showed that the variation of each character is very significant having maximum variability. The significance of D2 values revealed the existence of considerable divergence among the genotypes. Clustering of genotypes was done following Tocher’s method. Maximum number of genotypes was included in cluster I involving 16 genotypes followed by cluster II, III, IV, V and VI with 7, 5, 4, 4 and 2 respectively. While the cluster VII and VIII have 1 genotype each. The value of intra-cluster distance ranged from 0 (Cluster VII and VIII) to 2795.39 (Cluster V). The maximum inter cluster distance was observed between cluster III and IV (26970.83) while minimum between cluster V and VIII (3646.87). The basic study on genotypes for yield contributing characters of traditional aromatic varieties and other quality traits would help in making précised breeding strategies

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