GENETIC DIVERGENCE IN BOTTLE GOURD GENOTYPES UNDER MID HILL CONDITIONS OF UTTARAKHAND

Himani Rana, D K Rana, Ranesh Raturi

Abstract


The genetic divergence among 18 genotypes of bottle gourd (Lagenaria siceraria) was evaluated using D2 and Cluster analysis. The genotypes were divided into five groups. This suggested that the genotypes had a lot of variability. Cluster I had the most genotypes overall (seven), followed by Cluster II (six) and Cluster IV (three), while the remaining two clusters only contained single genotype. Cluster IV and cluster V had the greatest intercluster distance, whereas cluster I and cluster III had the smallest. Greater genetic divergence between the genotypes among these clusters was indicated by a larger inter-cluster distance, whereas a smaller inter-cluster value between clusters revealed that the genotypes of the clusters were not very genetically different from one another. The greatest mean values for the days to first female flowering, number of node displaying the first female flower, vine length (m), and number of nodes per vine were displayed in Cluster VI. While cluster I displayed the highest mean values for certain other parameters, including fruit yield per plant. The genotype LC-1 of cluster V and Arka Bahar, LC- 3, and LC- 5 in cluster IV would yield new recombinants with desirable characteristics in bottle gourds when crossed.


Keywords


Lagenaria siceraria, genetic divergence, D2analysis and Cluster analysis

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