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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2019, Volume : 7, Issue : 1
First page : (368) Last page : (373)
Article doi: : http://dx.doi.org/10.18782/2320-7051.7368

Genetic Improvement through Variability, Heritability and Genetic Advance for Grain Yield and its contributing traits in Wheat
(Triticum aestivum L. em Thell)

Sateesh Chandra Gaur*

Deptt of Genetics and Plant Breeding, B.R.D. P.G. College, Deoria, U.P., India
*Corresponding Author E-mail: scgaur101@gmail.com
Received: 7.01.2019 | Revised: 15.02.2019 | Accepted: 22.02.2019  

 ABSTRACT

At global level India ranks as second largest wheat producing country, contributing about one-tenth of the global wheat production. Introduction, evaluation and identification of potentially useful germ plasm forms the first and foremost step in a crop improvement programme. Genetic variability existing in nature or created through crop breeding is of immense value for crop improvement programmes. Genetic variability in a population can be partitioned into heritable and non-heritable variation with the aid of genetic parameters such as variance, genotypic coefficient of variation, heritability and genetic advance, which serve as a basis for selection of some outstanding genotypes from existing ones Heritability is the ratio of genetic variance to total variance for a plant trait and is related with progress from selection It expresses the extent to which phenotypes are determined by the genes transmitted from parents. Similarly Knowledge of the association of quantitative characters specifically for yield and its attributes is of immense practical value during selection. The selection of one character will lead to indirect change(s) of other character(s) if the two are correlated. Therefore, the knowledge of phenotypic and genotypic correlation and path analysis is important for a plant breeder. Path coefficient analysis measures the direct and indirect effects of various characters. High estimates of genetic advance in per cent of over mean were found for productive tiller per plant, biological yield per plant and flag leaf area. Grain yield per plant, plant height exhibited moderate (GA) The low estimates of genetic advance were observed for harvest index ,50% flowering, yield per spike, day to maturity, spikelet’s, ear length, number of grains per spike, peduncle length were observed our study.

Key words: Wheat, Heritability, Variability, Genetic Advance.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Gaur, S.C., Genetic Improvement through Variability, Heritability and Genetic Advance for Grain Yield and its contributing traits in Wheat (Triticum aestivum L. em Thell), Int. J. Pure App. Biosci.7(1): 368-373 (2019). doi: http://dx.doi.org/10.18782/2320-7051.7368