Assessment of genetic variability, inter trait relationship and principal component analysis for yield and yield related attributes in bitter gourd (Momordica charantia L.)

PADMANABHA K; Yoshita Shrikrishna Shastri; Sangamesh Udgire; Premalatha B R; K S Shankarappa; Aravinda Kumar J S

doi:10.56093/ijas.v96i10.178268

Authors

PADMANABHA K
Yoshita Shrikrishna Shastri
Sangamesh Udgire
Premalatha B R
K S Shankarappa
Aravinda Kumar J S

https://doi.org/10.56093/ijas.v96i10.178268

Abstract

To assess genetic variability, association studies, and begomovirus resistance of bitter gourd genotypes, researchers evaluated 32 diverse genotypes by Randomized Block Design (RBD) in two replications. Phenotypic coefficient of variation (PCV) exceeded genotypic coefficient of variation (GCV) indicating slight environmental influence. Higher PCV and GCV for traits such as fruit yield per vine, average fruit weight and peduncle length were observed, suggesting a broad genetic base conducive to selection. High broad-sense heritability and genetic advance were present in average fruit weight and fruit yield per plant, making them ideal for phenotypic selection. Correlation and path analysis identified branches per plant, average fruit weight and fruit diameter as significant contributors to fruit yield. The principal component analysis compressed the variability into eight components with first three components explaining 62.85% variability. The genotypes G6 (IC-50520), G9 (IC-264880) and G25(IC-256206-3) were in close proximity to yield-related trait vectors, explaining these genotypes are good yielders and directly selected for crop improvement. These findings offer valuable insights in improving yield and quality in bitter gourd.

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Author Biographies

Yoshita Shrikrishna Shastri

PhD Scholar,

Department of Vegetable Science, College of Horticulture, UHS Campus, GKVK Post, Bengaluru-560065, Karnataka, India
Sangamesh Udgire

MSc Hort. (Vegetable Science)

Department of Vegetable Science, College of Horticulture, UHS Campus, GKVK Post, Bengaluru-560065, Karnataka, India
Premalatha B R

Associate Professor in Agronomy

Department of Natural Resource Management, College of Horticulture, UHS Campus, GKVK Post, Bengaluru-560065, Karnataka, India
K S Shankarappa

Associate Professor in Plant Pathology

Department of Plant Pathology, College of Horticulture, UHS Campus, GKVK Post, Bengaluru-560065, Karnataka, India
Aravinda Kumar J S

Associate Professor in Vegetable Science

Department of Vegetable Science, College of Horticulture, Mysuru-571130, Karnataka, India

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