Microsatellite marker-based genetic diversity among quality protein maize (QPM) inbreds differing for kernel iron and zinc
作者： Firoz Hossain , Krishan Kumar , Ashish Vishwakarma , Vignesh Muthusamy , Kanchikeri Manjaiah
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摘要: Quality Protein Maize by virtue of opaque2 mutation is known to possess high lysine and tryptophan which help in improving biological value maize protein. Improvement these genotypes for kernel Fe Zn holds immense promise. We report here wide variation -Fe -Zn among 46 diverse inbreds. Promising inbreds with (>40 mg/kg) (>35.0 were identified. Profiling using 75 microsatellite markers distributed throughout the genome produced a total 256 alleles mean 3.41 per locus. Seven unique- 26 rare- The average polymorphism information content was 0.50, range 0.11-0.79. Genetic dissimilarity coefficient varied from 0.38-0.86 0.72. Cluster analysis grouped into three major clusters; principal coordinate depicted genetic nature inbred lines. Genetically lines can be used development hybrids enriched micronutrients. Phenotypically contrasting divergence serve as ideal parents developing mapping population(s) identifying loci underlying accumulation kernel.
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