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International Journal of Applied Agricultural & Horticultural Sciences
  • 29 April, 2024
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DOI Prefix : 10.37322
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Vol. 6 (2) : March-April 2015 issue
Green Farming Vol. 6 (2) : 237-240 ; March-April, 2015
Screening genotypes for rabi maize (Zea mays L.) for Eastern Uttar Pradesh conditions
MANJEET KUMAR1*, RAJESH SINGH2 and R.P. SRIVASTAVA3
Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi - 221 005 (Uttar Pradesh)
Designation :  
1,3Ph.D. Scholar *(manjeetbhu615@gmail.com), 2Professor
Subject : Crop Genetics and Plant Breeding
Paper No. : P-2389
Total Pages : 4
Received : 31 July 2014
Revised accepted : 20 January 2015
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Citation :

MANJEET KUMAR, RAJESH SINGH and R.P. SRIVASTAVA. 2015. Screening genotypes for rabi maize (Zea mays L.) for Eastern Uttar Pradesh conditions. Green Farming Vol. 6 (2) : 237-240 ; March-April, 2015

ABSTRACT
Thirty two genotypes for eleven characters were analyzed for various components of genetic variability in the present study. The Genotypic coefficient of variation (GCV) for all the characters was lower than Phenotypic coefficient of variation (PCV). GCV was highest for yield per plant (36.92) followed by cob height (24.90). Considerable higher magnitude of Broad Sense Heritability (h2bs) and Genetic advance was recorded for plant height (98.7%, 40.93), cob height (98.7%, 32.23), yield per plant (96.2%, 42.38) etc. High genetic advance along with high heritability arises due to additive gene action therefore selection for these characters are beneficial to achieve higher response of the selection. The clustering pattern indicated that 11 out of 32 genotypes were placed in Cluster I followed by Cluster VI with 10 genotypes. Cluster II, Cluster III and Cluster IV consisted of three genotypes each; remaining last Cluster V contained only two genotypes. The highest inter-cluster distance was observed between Cluster II and Cluster V (2299.84) followed by Cluster III and Cluster V (2067.86) and lowest inter-cluster distance between Cluster I and Cluster II (408.46) followed by Cluster I and Cluster III (515.86). Higher magnitude of inter-cluster distance indicated more genetically divergent genotypes in different clusters, which is likely to give higher F1 heterotic performance and broad spectrum of genetic variability in advance segregating generations. The present study involving statistical and genetical parameters along with inbred mean character value indicated that eleven genotypes (HUZM 211-1, CM 145, V 388, HKI 586, V 351, HKI 1105, HKI 162, V 358, CM 141, HUZM 97-1-2, HKI 209) will have considerable influence on the progenies if involved in hybrid development or population improvement programme of maize.
Key words :
Heritability, GCV, Genetic advance, Genetic divergence, Maize, PCV.