Assessment of genetic diversity in pigeon pea (Cajanus cajan) using micro satellite markers
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https://orcid.org/0000-0002-9566-5368
Ashwani Kumar
Neha Sharma
Abstract
An effective way to use germplasm for genetic improvement is to be aware of the genetic variation among crop genotypes. The objective of the present study was to assess the genetic diversity and population structure of 30 genotypes of pigeonpea from populations that were collected from various sources. In order to show a new structure within the pigeonpea genetic pool and to give crucial information for pigeonpea breeding operations, the predetermined study's goal was to define pigeonpea genotypes using a microsatellite marker technique. The genomic DNA of 30 pigeon pea genotypes were amplified with 20 SSR primers that produced 46 amplified bands, out of which 30 band were polymorphic (65.21%) and 16 bands were monomorphic (34.82%). Primer CcM 2977 generated a maximum number of amplified bands, of which 2 bands were polymorphic. Among 20 primers, only 8 primers showed the highest polymorphism (100%) and 5 primers were monomorphic in nature. Average of 2.30 bands per primer was amplified. The dendrogram constructed from the pooled data revealed six distinct clusters of which five were solitary. Cluster analysis of pigeon pea genotypes was based on Unweighted Pair Group Method with the Arithmetic average (UPGMA) method and the 30 pigeon pea genotypes were classified into six main groups. The present study indicated that the performance of SSR markers for the evaluation of genetic diversity could be beneficial for pigeon pea breeding. They could additionally be useful in genomic mapping research, developing pigeon pea cultivars with various genetics and reaping advanced crop productivity.
Article Details
Article Details
Genetic diversity, Pigeon pea, Microsatellite marker, UPGMA method
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