Evaluation of the Tolerance Ability of Wheat Genotypes to Drought Stress: Dissection through Culm-Reserves Contribution and Grain Filling Physiology

Islam, Md. Amirul and De, Rajib Kumar and Hossain, Md. Alamgir and Haque, Md. Sabibul and Uddin, Md. Nesar and Fakir, Md. Solaiman Ali and Kader, Md. Abdul and Dessoky, Eldessoky S. and Attia, Attia O. and El-Hallous, Ehab I. and Hossain, Akbar (2021) Evaluation of the Tolerance Ability of Wheat Genotypes to Drought Stress: Dissection through Culm-Reserves Contribution and Grain Filling Physiology. Agronomy, 11 (6). p. 1252. ISSN 2073-4395

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Abstract

Drought stress is one of the limiting factors for grain filling and yield in wheat. The grain filling and determinants of individual grain weight depend on current assimilation and extent of remobilization of culm reserves to grains. A pot experiment was conducted with eight wheat cultivars at the Pot House to study the grain filling and the contributions of reserves in culm, including the sheath to grain yield under drought stress. Drought stress was enforced by restricting irrigation during the grain-filling period. The plants (tillers) were harvested at anthesis, milk-ripe, and maturity. The changes in dry weights of leaves, culm with sheath, spikes, and grains; and the contribution of culm reserves to grain yield were determined. Results revealed that drought stress considerably decreased the grain filling duration by 15�24 and grain yield by 11

Item Type:	Journal Article
Subjects:	S Agriculture > S Agriculture (General)
Divisions:	Faculty of Business and Economics (FBE) > School of Agriculture and Food Technology School of Agriculture, Geography, Environment, Ocean and Natural Sciences (SAGEONS)
Depositing User:	Fulori Nainoca - Waqairagata
Date Deposited:	08 Jul 2021 22:09
Last Modified:	08 Jul 2021 22:09
URI:	http://repository.usp.ac.fj/id/eprint/12843

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