Impact of carbohydrate metabolism pathways on bearing habit of mango (Mangifera indica L.) genotypes
DOI:
https://doi.org/10.24154/jhs.v18i1.2135Keywords:
Carbohydrate metabolism, Irregular bearing, Mango, Molecular markersAbstract
Heterozygosity is the major constraint in perennial fruit crop like mango for regular bearing breeding. Majority of the popular mango varieties have irregular bearing habit. Many external and internal factors affect the bearing habit of perennial fruit crops. Among internal factors, the level of carbohydrate reserves and phytohormones plays a major role on bearing habit of fruit crops like apple, citrus, mango, litchi etc., Therefore, present research work aimed to study the carbohydrate metabolism pathways in regular and irregular mango genotypes of varying origin. A total of 30 primers were designed using in silico mining of four key genes coding for citrate synthase, alcohol dehydrogenase, sucrose phosphate synthase and trehalose phosphate synthase. These genes play important role in sugar and starch metabolism in mango. Of these specific primers, 14 showed polymorphism among the genotypes studied. Gene diversity (GD), average number of alleles per locus (An), polymorphism information content (PIC) and major allele frequency (Maf) observed were 0.45, 2.14, 0.35, 0.59, respectively. Simple sequence repeats markers grouped 63.15% studied mango genotypes of regular bearers together. Further, these markers could be utilized in a greater number of genotypes for regularity.
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Copyright (c) 2023 Hatkari Vittal , Nimisha Sharma , Mukesh Shivran, Neha Sharma , Anil Kumar Dubey Dubey , Sanjay Kumar Singh , Radha Mohan Sharma , Bikram Pratap Singh, Haritha Bollinedi, Mahesh Chand Meena , Rakesh Pandey, Sridhar Gutam
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