Diversity Analysis of Morphological and Agronomic Traits in Cajanus cajan

Abstract:

In order to explore excellent Cajanus cajan (pigeonpea) resource, the genetic diversity of 10 quality traits and 18 quantitative characters of 10 pigeonpea genotypes was studied and the agronomic characters were cluster analyzed. The results showed that the genetic diversity index of all quality traits were high, among which fresh pod color was the highest at 1.9219, and those of upper petal embellishment color, fresh seed color and dry grain color were all 1.4855, those of dry grain stain, dry grain umbilical ring color, and strophiole or not were all 0.8813, those of lobular leaf shape, petal color and plant type were the lowest at 0.7219. Ten genotypes of pigeonpea could be divided into three groups by cluster analysis, such as medium diameter and sparse, medium diameter and dense, and thick diameter and dense. These could provide a scientific basis for the variety breeding of pigeonpea.

Key words:Pigeonpea (Cajanus cajan);Germplasm resource;Agronomic trait;Genetic diversity;Cluster analysis