ARCHIVES
VOL. 7, ISSUE 1 (2025)
Exploring genetic diversity in vegetable type pigeonpea
Authors
A Gopikrishnan, P Thilagam, A Thirumurugan, B Nallakurumban, P Veeramani
Abstract
Twelve morphological and phenological
characteristics were used in principal component analysis to identify the
pattern of genetic variability in 33 vegetable type pigeonpea genotypes. The
largest variation was observed for number of pods per plant with coefficient of
variation of 80.05 % followed by single plant yield (67.21), leaf width
(37.69). The least variation was observed in days to maturity with coefficient
of variation of 2.33%. Principal component analysis extracted five components
contributing to around 79.99% of total variability among twelve characters.
Principal component 1 had the contribution from the traits such as pod length,
no. of seeds per pod and leaf length which accounted to 27.30 % of the total
variability. The principal component 2 explained 18.50 % of total variability
from number of pods per pod, single plant yield and days to maturity. Thus the
results of principal component analysis used in the study had revealed the high
level of genetic variation and the traits controlling for the variation were
identified. Hence, these entries can be utilized for trait improvement in
breeding programs for the traits contributing for major variation. The biplot
analysis indicated days to 50% flowering, days to maturity, and hundred seed
weight showed positive associations due to acute angle between them. Zero
correlation was noticed between number of pods per plant and number of seeds
per pod due to angle between the traits is 90°. Cluster analysis acknowledged
one major cluster with single genotype ICP15269 for lowest hundred seed weight.
Download
Pages:123-129
How to cite this article:
A Gopikrishnan, P Thilagam, A Thirumurugan, B Nallakurumban, P Veeramani "Exploring genetic diversity in vegetable type pigeonpea". International Journal of Agriculture and Plant Science, Vol 7, Issue 1, 2025, Pages 123-129
Download Author Certificate
Please enter the email address corresponding to this article submission to download your certificate.