Gene Effects of Resistance to Septoria tritici in Durum Wheat under Water Stress Level
Journal Title: Current Journal of Applied Science and Technology - Year 2017, Vol 25, Issue 5
Abstract
Gene effects and narrow-sense heritability estimates for components of resistance to Septoria tritici Blotch (STB) assessed under three water stress levels were evaluated using two populations derived from crossing partial-resistant durum wheat inbred lines Agili and Jneh Kottifa and susceptible inbred lines Karim 80 and Razzek by the generation mean analysis. Populations included the resistant parents, susceptible parents, F1 and F2 generations and backcrossed BC1Pr and BC1Ps generations. The presence of an epistatic effect was dependent upon water stress level. In the absence of water stress, only additive and dominance effects were induced for the two populations and the two STB isolates. Therefore, in the presence of water stress levels, the variation of generation means was adequately explained by additive, dominance and digenetic epistatic effects for the two populations. The change in the mode of the gene effect of STB resistance inheritance depending upon water stress level complicated the procedure of incorporating genes of resistance in rentably cultivars Karim 80 and Razzek. In the absence of water stress, selection would be simpler, because only additive and dominance effects were implicated. However, the genetic mechanism will not be stable when the plant experiences water stress. For cultivars designed for exploitation in a wide range of environmental conditions, selection under water stress is suggested for the stability of resistance to STB. Narrow-sense heritability estimates varied between combinations of crosses–isolates–water stress levels and ranged from 51 to 72%.
Authors and Affiliations
F. Bnejdi, M. Saadoun, N. Rassaa, Mohamed El Gazzeh
Keywords
Related Articles
- EP ID EP319037
- DOI 10.9734/CJAST/2017/37092
- Views 107
- Downloads 0
Determination of Gillnet and Hook Selectivity for Caranx heberi Captured off Kanyakumari Coast of India
Large meshed gillnets having mesh sizes of 13.5 cm, 14 cm, 14.5 cm and 15 cm and Hooks No.5,6,7 and 8 were chosen for determining the selectivity and fishing power of the gears to capture the larger carangid Caranx heb...
Strength Properties of Bamboo-Fibre Cement Boards Used as Building Partitions
This research studied the strength properties of Bamboo-fibre Cement Boards used as building partitions, and compares the results with those of a conventional partition board. Bamboo-fibre Cement Boards, with bamboo by v...
Factors of Influence in the Results of 3D Measurements: Software Associated with Coordinate Measuring Machines
In three-dimensional metrology, the means of 3D measurements have been widely multiplied in recent years, in metrology laboratories, in production workshops, with the evolution of technology in general, the software asso...
Investigation on the Effect of Aluminium Smelting on Air Quality at Rusal Alscon Ikot Abasi, Akwa Ibom State
This research work addresses the impact of Aluminium smelting on air quality at Ikot Abasi environment arising from the operational activities of Rusal-Alscon plant. The research was conducted by the collection of in sit...
Comparative Cost Effectiveness of Growth and Reproductive Performance of the Archatina archatina Fed Compounded Feed and Natural Feed Materials
This study evaluated the response of the giant African land Archatina archatina snails to three different diets, with regards feed intake, feed conversion, shell length and weight gain. A comparative cost analysis of gro...