| Autor: |
AHMED, H. G. M.-D., KASHIF, M., SAJJAD, M., ZENG, Y.-W. |
| Předmět: |
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| Zdroj: |
Applied Ecology & Environmental Research; 2020, Vol. 18 Issue 4, p5645-5659, 15p |
| Abstrakt: |
Breeding drought resistant wheat is very important for sustainable food production. In future research, each new cross from breeder will involve the modification of genome-wide gene networks that control the expression of drought and yield, especially the dynamics of change in complex gene families involved in drought adaptation. Declining water resources as a result of extreme use of water for irrigation and climate change pose a severe threat to food security. It is needed to divulge and manipulate the genetic potential of wheat (Triticum aestivum L.) germplasm to adapt to scarce water resources with higher/sustainable yield potential. In this regard, drought-tolerant and drought-susceptible wheat genotypes were manipulated in line (10) × tester (5) mating design in the department of PBG-UAF Pakistan to understand the genetic mechanism and effect of drought tolerance on wheat yield and quality attributes like protein and gluten contents under normal and drought conditions. It was imperative to breed wheat genotypes that withstand in drought environments having maximum yield and protein contents. The significant specific combining ability (SCA) provided the prominent non-additive genetic mechanism in the inheritance of yield and quality traits in wheat for the studied germplasm. Gene action based screening revealed that the line 9493 (L1), tester 9508 (T1) and their hybrid (L1 × T1) were ideal genetic resources to breed against drought resistance for quality and yield attributes. Therefore, hybrid breeding will be rewarding and the selection practice for superior individual plants should be delayed to advanced generations like F4 and F5. The superior genotype 9493 and hybrid (cross) 9493 (L1) × 9508 (T1) can be combined to develop new promising and improved hybrids/varieties for quality and yield contributing attributes under drought conditions to fulfill the wheat demand and sustainable food security. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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