ARCHIVES
VOL. 6, ISSUE 3 (2024)
Phenotypic diversity using principal components and cluster analysis in Potato genotypes grown in Mambilla Plateau, Taraba State, Nigeria
Authors
Zanzam M S, Simon S Y, Jakusko B B
Abstract
Potato due to its early maturity, high yield and excellent food value
can improve food security, increase household income and alleviate poverty.
This study was conducted at Mambilla Plateau in 2021 and 2022 cropping season
to investigate the extent of genetic diversity among twelve potato genotypes
using principal component and cluster analysis. It was established according to
the randomized complete block design with three replications. Data were
collected on growth, yield and internal quality traits. The results revealed
that the 1st six principal component (PC1 - PC6)
with Eigen values greater than 1 accounted for 87.53 % of the total variation.
The 1st principal component with variance of 25.14 % was dominated
positively by number of branches per plant, weight of tubers per plant, weight
of tuber per plot, and total tuber yield per hectare, while the 2nd
principal component with 22.10 % of the variance was associated positively with
days to first flower, number of leaves per plant, weight of tubers per plant
and number of tubers per plot. Whereas the 3rd, 4th, 5th
and 6th had proportional variance of 14.40 %, 10.50 %, 8.0 %, and
7.2 % respectively. The genotypes were grouped into two clusters, with four
individuals in cluster 1 and eight individuals found in cluster 2. The maximum
genetic distance was found between Caruso and Madam (7.87) and showed maximum
divergence, while the minimum Euclidean distance was observed between Lady
Christly and Green leaf Nicola (2.09). Genotypes belonging to different
clusters having maximum genetic divergence can be effectively utilized in crop
improvement programme.
Download
Pages:75-80
How to cite this article:
Zanzam M S, Simon S Y, Jakusko B B "Phenotypic diversity using principal components and cluster analysis in Potato genotypes grown in Mambilla Plateau, Taraba State, Nigeria". International Journal of Agriculture and Plant Science, Vol 6, Issue 3, 2024, Pages 75-80
Download Author Certificate
Please enter the email address corresponding to this article submission to download your certificate.