Indian Society of Genetics & Plant Breeding

Diversity among maize landraces in North West Himalayan region of India assessed by agro-morphological and quality traits

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Fifty-one accessions collected from remote areas of NWH
region (Himachal Pradesh and Jammu and Kashmir) were
evaluated for genetic diversity on the basis of phenotypic
and grain quality data. Significant differences were found
among accessions for agro-morphological as well as quality
traits.These accessions had relatively greater variability for
yield per plant (g), grain weight (g), plant height (cm), ear
height (cm), kernel rows, number of kernels per row, leaf
width (cm) and tryptophan content. The cluster analysis
based on the phenotyping and biochemical data divided
51 accessions into four clusters; all accessions from Jammu
and Kashmir region grouped into cluster 1. Principal
component analysis revealed that plant height, ear height,
protein, oil, sugar, starch contents and leaf length (cm)
were major contributor towards diversity. The grouping
pattern obtained in the cluster analysis and PC biplot was
congruent with geographical relationship among the
accessions. Accessions such as IC556421 with high protein
(13.27%) and sugar (4.53%) content, IC568267 with high oil
content (4.94%) and IC568265 with high tryptophan content
(0.56%) could be utilized in future research programme.

Keywords: Maize, cluster analysis, genetic resources, grain yield, protein, sugar


Year: 2015
Volume: 75
Issue: 2
Article DOI: 10.5958/0975-6906.2015.00029.2
Print ISSN: 0019-5200
Online ISSN: 0975-6906


J. C. Rana info_circle
D. P. Chaudhary info_circle

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