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STUDIES ON GENETIC DIVERGENCE IN QUALITY PROTEIN MAIZE (Zea mays L.)

KrishiKosh

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Title STUDIES ON GENETIC DIVERGENCE IN QUALITY PROTEIN MAIZE (Zea mays L.)
 
Creator VIJAY KUMAR, K.
 
Contributor SUDARSHAN, M.R
 
Subject GENETIC, DIVERGENCE, QUALITY, PROTEIN, MAIZE
 
Description The present investigation was carried out on sixty three quality protein
maize lines for the estimation of variability, correlation, path analysis and genetic
diversity. The experiment was conducted at College Farm, College of Agriculture,
ANGRAU, Rajendranagar, Hyderabad during Rabi 2008 in Randomized Block
Design with three replications.
Considerable genetic variability and high heritability for yield and its
components as well as quality traits were observed. High genetic advance was
observed for yield, ear weight, ear height, number of kernels per row, plant height,
ear length, ear girth, days to 50 per cent tasseling, days to 50 per cent silking and
oil content indicating role of additive genes in controlling these traits.
Correlation studies revealed that grain yield per plant had positive and
significant correlation with ear weight, number of kernels per row, ear girth,
number of kernel rows per ear, 100 seed weight, shelling per cent, ear length and
oil content.
Path analysis revealed, grain yield had positive direct relationship with ear
weight and shelling per cent and had negative relationship with days to 50%
silking, ear height, and oil content. Ear weight also had considerable indirect effect
via 100 seed weight and shelling per cent.
Based on D2 analysis the sixty three genotypes were grouped into eight
clusters. The highest intra cluster distance was observed in cluster V. The highest
inter cluster distance was observed between cluster VI and VIII, followed by
cluster II and V indicating wide genetic diversity between them, while least inter
cluster distance was observed between cluster I and II indicating genetic closeness
between the genotypes of these clusters. It is suggested that the genotypes
belonging to cluster II, V, VI and VIII may be undertaken in a hybridization
programme for getting good recombinants.
 
Date 2016-07-28T13:21:48Z
2016-07-28T13:21:48Z
2009
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/70155
 
Language en
 
Relation D8504;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABAD