Performance and combining ability for grain yield and quality traits of wheat (Triticum aestivum L.) F1 diallel crosses under low-N and high-N environments
Journal Title: Scientia Agriculturae - Year 2015, Vol 12, Issue 1
Abstract
Improving grain yield and quality under low-N has been a desirable goal of wheat breeders. This study aimed at investigating the per se performance of grain yield and quality traits and the relative importance of general (GCA) and specific (SCA) combining ability in a set of wheat cultivars and promising lines and their F1 diallel crosses. Parents (6) and F1's (15) were evaluated in two seasons in two separate experiments using randomized complete block design with three replications; each experiment under one level of N ( 0 or 75 kg N/fed). The rank of crosses in F1 generation for most studied traits was changed from one environment (N-level) to another, indicating a significant G x N interaction. In general, means of grain yield/plant (GYPP), grains/spike (GPS), 100-grain weight (100GW) and spikes/plant (SPP) of the three parents L25 , L26 and L27 were higher in magnitude than those of the three other parents Gem 7, Gem 9 and Giza 168 under both high-N and low-N levels. Some genotypes had high grain yield and at the same time had high grain protein content under low-N, such as L26 and L26 x L27. Mean squares due to GCA and SCA were highly significant, for all studied traits, but the magnitude of GCA was higher than SCA, for all studied traits under the two levels of N, except for 100Gw and grain protein content (GPC) under low-N, indicating more importance of additive than non-additive variance in controlling most studied traits. In general, the best general combiners for grain yield and quality attributes were L26 followed by L27 and L25 parents under both high-N and low-N. For SCA effects, the best F1's under high-N were not the same under low-N. Under low–N conditions, the best cross was Gem7 x Gem 9 followed by Gem9 x Gz168 and L25 x Gz168. The study concluded that under both high-N and low-N, the mean performance of a given parent could be considered an indication of its general combining ability effects and under under high-N only, the mean performance of a given F1 cross could be considered as an indication of its specific combining ability.
Authors and Affiliations
A. M. M Al-Naggar, R Shabana, M. M Abd El-Aleem, Zainab A El-Rashidy
Keywords
Related Articles
- EP ID EP111875
- DOI 10.15192/PSCP.SA.2015.12.1.1322
- Views 130
- Downloads 0
Rhizoplane mycoflora of cocoyam [colocasia esculenta (l.) Schott] corms at nsukka, nigeria and their involvement in rot development during storage
Corms of cocoyam [Colocasia esculenta (L) Schott] planted in five different local government areas in Nsukka zone, Enugu State, were employed for this study. Six months old corms were used for these mycoflora inves...
Wobbe Index Determination of Cattle Dung Biogas
This paper is aimed at determining the Wobbe Index (W I) of cattle dung biogas which is the amount of energy delivered to a burner through an injector or orifice especially during combustion. The biogas was produce...
Effects of Transesterification on the Colour of Biodiesel
Vegetable oils and animal fats are triglycerides, which is a glyceride on to which are attached three free fatty acids. During transesterification, the free fatty acids are removed and replaced with radicals from t...
Land Management Practices on Cassava Production in Akinyele Local Government Area, Oyo State Nigeria
Sustainable agricultural practices and food security have been major activities in reducing poverty level in a farming system especially among Nigerian farmers, therefore the study analyzed the land management prac...
Costs and Returns Analysis for Small-Scale Irrigated Crop Production in Kaduna State, Nigeria
Predicated on the argument that inadequate information on the profitability of irrigated agriculture could be a reason behind the very low percentage of farmers engaged in irrigated agriculture in Nigeria; this stu...