Estimates of genetic components and regression analysis for grain yield and various morphological traits in bread wheat (Triticum aestivum L.)
Journal Title: Journal of Applied and Natural Science - Year 2018, Vol 10, Issue 1
Abstract
The present study was conducted to estimate the gentic components and regression analysis for grain yield and various morphological traits in bread wheat involving 10 parents and their 45 F1s (half diallel) during 2012- 13 and 2013-14. Significant additive (D) and dominance (H1) variance for the traits indicated that expression of these traits is control by both additive and dominance gene action. Average degree of dominance (H1/D)1/2 were more than unity for the traits (peduncle length, flag leaf area, productive tillers, biological yield, grain yield, harvest index) indicating the preponderance of over dominance gene action. The estimates of h2 were positive and significant for days to ear emergence, peduncle length, productive tillers, biological yield and grain yield indicated dominance of genetic components in F1s. Positive and significant values of F were estimated for days to ear emergence, days to 50% flowering, spike length, flag leaf area and grain yield in F1s indicating the preponderance of dominance and positive genes in the parents involved. The theoretical value (0.25) of (H2/4H1) for all the traits indicated asymmetrical distribution of positive and negative genes. The proportion of dominant and recessive alleles indicated presence of dominant alleles in the parents. The traits showing more than 30% narrow sanse heritability could be rewarding for further improvement in grain yield in bread wheat. Regression analysis indicated that the traits (days to ear emergence, days to 50% flowering, peduncle length, flag leaf area, productive tillers, harvest index, biological yield and grain yield) control by over dominance type of gene action. The parent RAJ 4246 contained maximum dominant genes for days to ear emergence and days to 50% flowering; HD 2733 for spike length and flag leaf area and HD 2824 for productive tillers, biological yield and grain yield used as donors in multiple traits breeding programme to develop high yielding wheat genotypes.
Authors and Affiliations
Sandeep Kumar, Pradeep Kumar, Vichitra Kumar Arya, Ravi Kumar, S. A. Kerkhi
Keywords
Related Articles
- EP ID EP286914
- DOI 10.31018/jans.v10i1.1569
- Views 88
- Downloads 0
Toxicity of Vernonia anthelmintica Linn. (Asteracea) seeds against mosquitoes vectors
The Toxicological activity (larvicidal, adulticidal and repellent toxi City) of Vernonia anthelmintica seeds fraction was tested against different species of mosquito vectors viz, malaria (Anopheles culicifacies and Anop...
Sustainable agriculture: Trends and opportunities for 21st Century
The green revolution has been a major boost to the agriculture sector throughout the world including India. The food production of the country increased by many fold during the 1960s and 1970s and has continued to increa...
Assessment of nutrient ratios in the leaf of sugarcane grown in Theni district of Tamil Nadu, India
To assess the impact of nutrient ratios N/P, N/K and N/S on sugarcane productivity, a survey was conducted during its grand growth stage (October, November and December) influenced by various yield levels based on soil q...
Tree diversity, stand structure and community composition in tropical forest of Rajaji tiger reserve, Northern India
In present study, we present data on tree diversity, stand structures and community composition in six sites of tropical forest in Rajaji tiger reserve, Northern India. The enumeration of 72 plots results a total of 19,0...
Effect of hydropriming and different sowing dates on growth and yield attributes of Wheat (Triticum aestivum L.)
The present investigation was conducted to study the effects of hydropriming and different sowing dates on growth and yield attributes of wheat (Triticum aestivum L.) during Rabi season of 2014-15.The experiment was cond...