GENETIC DIVERGENCE IN BOTTLE GOURD [LAGENARIA SICERARIA (MOL.) STANDL. ]
Padmakshi Thakur*1, Dhananjay Sharma1, Sasmita Priyadarsini Dash1 and S. K. Nair2
1Department of Horticulture, College of Agricultural, IGKVV, Raipur -492012
2Department of Genetics and Plant Breeding, College of Agricultural, IGKVV, Raipur -492012
[Correspondence author E-mail*1: email@example.com]
Received: 20-08-2015 Accepted: 12-10-2015
An experiment was carried out to analyze genetic diversity analysis for yield and its contributing traits in 22 bottle gourd genotypes including two checks i.e. Pusa Naveen and NDBG 104 at Research cum Instructional Farm of Department of Horticulture, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.) during summer 2013. The cluster analysis grouped all 22 bottle gourd genotypes into 5 major clusters based on D2 value. Extreme genetic divergence was estimated among clusters. Maximum number of genotypes were grouped into cluster IV included six genotypes, whereas, cluster V and cluster II included five genotypes in each cluster, which is followed by cluster I and III cluster had only three genotypes in each cluster. Average inter cluster distance was found maximum (6.815) between cluster III and cluster I which would be fruitful for developing heterotic cross combination. Cluster IV expressed highest mean value for fruit girth, number of fruits per plant and yield quintal per hectare. Cluster II showed highest mean performance for fruit length. The characters like number of branches per plant and yield (q/ha) contributed maximum to divergence. Hence, Bottle gourd crop improvement could be tried with the genotypes of divergent clusters for better heterotic effects.
Keywords: Genetic diversity, bottle gourd, yield, heterotic effect