Response of the Gene Actions Governing Grain Yield and Quality Traits in Wheat Parents and Their F1 Progenies to Decreasing Soil-N Rate
Journal Title: Annual Research & Review in Biology - Year 2015, Vol 8, Issue 5
Abstract
To start an accurate wheat breeding program for improving low-N tolerance, information on the type of gene action controlling the inheritance of grain yield and quality traits under contrasting N environments should be available, which is the objective of the present investigation. The diallel crosses (except reciprocals) among six divergent parents in low-N tolerance were made. Parents and F1 crosses were evaluated in two seasons under two N environments; namely 0 kg N/fed (low-N) and 75 kg N/fed (high-N) in two separate experiments using a randomized complete block design with 3 replications. Results of analysis of combining ability across seasons showed that variances due to both general (GCA) and specific (SCA) combining ability were significant for all studied yield and quality traits, indicating the involvement of additive and non-additive types of genes in controlling these traits. Parents and F1 crosses thus have different GCA and SCA effects, respectively. The best general combiners with positive effects for improvement of low-N tolerance were L26, L27 and L25 parents. Under low–N conditions, the best specific combinations for improvement of low-N tolerance were L25 x Gz168, Gem9 x Gz168 and Gem7 x Gem 9. Hayman analysis of variance indicated that spikes/plant (SPP), grains/spike (GPS), harvest index (HI) and grain yield/plant (GYPP) were controlled by additive and non-additive types of gene action, while 100 grain weight (100 GW) was controlled by an additive type of gene action. A high narrow sense heritability estimate was observed for GYPP (66.32%), SPP (42.52%), 100 GW (33.11%) and GPS (21.80%) under low-N.
Authors and Affiliations
A. M. M. Al-Naggar, R. Shabana, M. M. Abd El-Aleem, Zainab El-Rashidy
Keywords
Related Articles
- EP ID EP353520
- DOI 10.9734/ARRB/2015/21939
- Views 98
- Downloads 0
Influence of Main Stem Density on Irish Potato Growth and Yield: A Review
Our review confirms that stem density is affected by seed factors, seedbed conditions and planting methods. Physiologically old seed tubers develop into a ‘weak’ stem density. A loose friable soil that is warm and moist...
An Outbreak of Marek’s Disease in Adult Layer Chickens in Umuahia, Abia State, Nigeria
Between the months of May and August, 2014, a disease outbreak in two small poultry farms consisting of 600 and 550 Isa Brown layers both located in Umuahia, Abia state was reported to the Veterinary Teaching Hospital of...
Animal Welfare in Ecotourism
The negative welfare experienced by some animals within the tourism trade has been well publicised across various mediums, from modern scientific literature and industry audits to public outcry on social media. However,...
Quality Seed of Onion: Effect of Micro and Macronutrients
An experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka during Robi season for determining the effect of micronutrients (Zn, B, and Mn) with different levels of macronutrients (NPKS fertilizers) on th...
Effect of Foliar Application of Biosimulated Nanomaterials (Calcium/Yeast Nanocomposite) on Yield and Fruit Quality of 'Ewais' Mango Trees
Poor fruit set in mango is consider the main problem that reduces the production. This study aims to raise fruit set, minimize the percentage of fruit drop, increase tree yield and improve fruit quality by providing the...