Genetic diversity in pointed gourd (Trichosanthes dioica) genotypes for fruit yield and quality traits under eastern plateau and hill region

ANKIT KUMAR  SINHA; BHAVANA  P; A K  SINGH; H  CHOUDHARY; J K  RANJAN; G P  MISHRA; RESHMA  SHINDE; NAWED  ANJUM; SAJIYA  EKBAL; GOURAV KUMAR  MOHANTY

doi:10.56093/ijas.v94i7.148891

Authors

ANKIT KUMAR SINHA ICAR-Indian Agricultural Research Institute, New Delhi
BHAVANA P ICAR-Research Complex for Eastern Region, Farming System Research Centre for Hill and Plateau Region, Plandu, Ranchi, Jharkhand 834 010, India
A K SINGH ICAR-Research Complex for Eastern Region, Farming System Research Centre for Hill and Plateau Region, Plandu, Ranchi, Jharkhand 834 010, India
H CHOUDHARY ICAR-Indian Agricultural Research Institute, New Delhi
J K RANJAN ICAR-Indian Agricultural Research Institute, New Delhi
G P MISHRA ICAR-Indian Agricultural Research Institute, New Delhi
RESHMA SHINDE ICAR-Research Complex for Eastern Region, Farming System Research Centre for Hill and Plateau Region, Plandu, Ranchi, Jharkhand 834 010, India
NAWED ANJUM ICAR-Research Complex for Eastern Region, Farming System Research Centre for Hill and Plateau Region, Plandu, Ranchi, Jharkhand 834 010, India
SAJIYA EKBAL ICAR-Research Complex for Eastern Region, Farming System Research Centre for Hill and Plateau Region, Plandu, Ranchi, Jharkhand 834 010, India
GOURAV KUMAR MOHANTY Odisha University of Agriculture and Technology, Bhubaneswar, Odisha

https://doi.org/10.56093/ijas.v94i7.148891

Keywords:

D2 analysis, Fruit quality, Genetic diversity, Pointed gourd, Yield

Abstract

The experiment was conducted during summer seasons of 2021–22 and 2022–2023 at ICAR-Research Complex for Eastern Region, Farming System Research Centre for Hill and Plateau Region, Plandu, Ranchi, Jharkhand focused on assessing the genetic diversity for fruit yield and quality parameters among 46 unique pointed gourd (Trichosanthes dioica Roxb.) genotypes. The data collected underwent thorough statistical analyses, encompassing genetic variability, analysis of variance (ANOVA), correlation coefficients, path analysis, exploration of genetic divergence and biochemical characterization. The ANOVA results revealed significant variations across the selected genotypes in terms of fruit yield and quality traits. Key attributes, such as the number of fruits/plant, harvest frequency, pulp seed ratio and total phenol content, displayed significant positive correlations with total fruit yield. The noteworthy was the positive direct effect of pulp weight on total fruit yield indicated by a coefficient of 0.99. Further, this study identified total fruit yield as the primary contributor to the observed genetic diversity. Cluster analysis results in to the grouping of 46 genotypes into 12 distinct clusters based on D² values. The study highlighted significant variability among pointed gourd genotypes, suggesting ample opportunities for selection-based improvement. Selection based on characteristics such as the number of fruits per plant, pulp weight and pulp seed ratio is expected to enhance yield potential. Identified genotypes, such as Swarna Alaukik, HAP-79, HAP-70 (for yield-related attributes) and HAP-106 (for quality traits), emerged as promising which hold potential for future breeding initiatives and are recommended for cultivation in the eastern plateau and hill region for augmenting yield potential. Cluster III and cluster XII offer diverse genetics for breeding. Crossing these clusters can create new high-yield cultivars. This strategic cultivation aims to enhance the nutritional well-being of the local population in that area.

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