Multivariate analysis of genetic diversity in Phytophthora pod rot resistant exotic cocoa germplasm

Autor:	P.S. Panchami, S. A. Veeresh, K. S. Shilpa, B. Suma, J.S. Minimol
Rok vydání:	2020
Předmět:	Germplasm Genetic diversity Horticulture Multivariate analysis Point of delivery food and beverages Soil Science Phytophthora Biology biology.organism_classification Agronomy and Crop Science
Zdroj:	Journal of Plantation Crops. :202-212
ISSN:	2454-8480 0304-5242
DOI:	10.25081/jpc.2020.v48.i3.6628
Popis:	The current research work was carried out to evaluate the genetic diversity associated with thirty cocoa accessions resistant to Phytophthora. The cluster analysis and principal component analysis evaluated the genetic variability among the different genotypes. The highest number of genotypes were observed in cluster III (8) when qualitative traits were considered. In quantitative cluster analysis, most of the genotypes were placed in separate clusters due to high variability in the germplasm. Principal component (PC) analysis showed that the first three PCs with more than one Eigen-value contributed to 79.9 per cent of variability for different traits. When qualitative and quantitative characters were considered along with resistant reaction, clusters with genotypes highly resistant to Phytophthora pod rot were observed. Hybridization programme involving these resistant hybrids belonging to diverse clusters will result in high yielding hybrids with ample resistance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1a649b6086f1f97096e515799e387cd8 https://doi.org/10.25081/jpc.2020.v48.i3.6628 Zobrazit plný text záznamu