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Diversity analysis of released varieties of Indian cardamom using ISSR markers reveal narrowing genetic base

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Title Diversity analysis of released varieties of Indian cardamom using ISSR markers reveal narrowing genetic base
 
Creator Anisha, C S
Mathew, Mary K
Sasidharan, Swapna
Jose, Sherin
Varghese, Rithin C
Ranjanan, Reshma
Geethu, M
Rao, Y S
Remashree, A B
 
Subject Elettaria cardamomum
ISSR markers
Varietal diversity
Genetic base
 
Description 311-322
Elettaria cardamomum Maton the small cardamom of commerce is a monotypic genus in India under the family Zingiberaceae. Genetic diversity studies using inter simple sequence repeat (ISSR) markers were conducted on a total of 13 released varieties of cardamom including selections and hybrids from different research stations in South India along with a popular variety Njallani and a wild relative Aframomum sps as checks. ISSR markers however, revealed relatively high level of genetic redundancy among the tested varieties with the exception of a few. Nonetheless, unweighted pair group method of arithmetic average (UPGMA) based cluster analysis of the similarity matrix differentiated all the varieties tested with the exception of two and segregated the wild relative Aframomum. Considerable reduction of polymorphism percentage was observed on exclusion of Aframomum while studying ISSR polymorphism which could be an indicator of the narrowing genetic base in the released varieties. Morphological data were compiled based on International Plant Genetic Resources Institute (IPGRI) cardamom descriptor and revealed moderate variability among the varieties. The results highlighted the requirement of molecular characterization of unutilized germplasm accessions, related wild species, and exotic relatives using specific molecular markers to help refine breeding efforts and introgression of new alleles for further improvement and enhancement of genetic base of cultivated cardamom.
 
Date 2021-04-07T06:48:28Z
2021-04-07T06:48:28Z
2020-10
 
Type Article
 
Identifier 0975-0967 (Online); 0972-5849 (Print)
http://nopr.niscair.res.in/handle/123456789/56607
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJBT Vol.19(4) [October 2020]