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Conferring drought-tolerant wheat genotypes through morpho-physiological and chlorophyll indices at seedling stage

文献类型： 外文期刊

作者： Ahmed, Hafiz Ghulam Muhu-Din 1 ; Zeng, Yawen 2 ; Yang, Xiaomeng 2 ; Anwaar, Hafiz Arslan 3 ; Mansha, Muhammad Ze 1 ;

作者机构： 1.Univ Cent Punjab, Punjab Grp Coll, Dept Bot, Bahawalpur 63100, Pakistan

2.Yunnan Acad Agr Sci, Biotechnol & Germplasm Resources Inst, Kunming 650205, Yunnan, Peoples R China

3.Bahauddin Zakariya Univ, Dept Plant Pathol, Multan, Pakistan

4.Bahauddin Zakariya Univ, Coll Agr, Bahadur Sub Campus, Layyah, Pakistan

5.Khwaja Fareed Univ Engn & Informat Technol Rahim, Dept Agr Engn, Rahim Yar Khan, Pakistan

6.Univ Sargodha, Dept Plant Breeding & Genet, Sargodha, Pakistan

7.Tabuk Univ, Dept Biol, Coll Sci, Tabuk, Saudi Arabia

关键词： Chlorophyll; Photosynthesis; Wheat; Seedling; Drought

期刊名称：SAUDI JOURNAL OF BIOLOGICAL SCIENCES （ 影响因子：4.219； 五年影响因子：4.432 ）

ISSN： 1319-562X

年卷期： 2020 年 27 卷 8 期

页码：

收录情况： SCI

摘要： The decrease in water resources due to the excessive use of water for irrigation purpose and climatic changes represents a serious world-wide threat to food security. In this regards, 50 wheat accessions were analyzed, using completely random factorial design at the seedlings stage under normal and drought stress conditions. Significant variation was detected among all accessions under both conditions. All characters studied showed variations in the mean values in water deficit environments in studied gemplasm at seedling stage. As seedling fresh weight, dry weight, relative water content, cell membrane thermo-stability, chlorophyll a & b were positively associated among themselves under drought conditions which showed the significance of these attribute for water deficit areas in future wheat breeding programs. Based on their performance, five accessions namely Aas-11, Chakwal-86, Pasban-90, Chakwal-97 and Kohistan-97 were selected as drought tolerant and three accessions namely Mairaj-08, Lasani-2008 and Gomal-2008 were selected as drought susceptible genotypes. The choice of wheat accessions based on the characteristics of the seedlings is informal, low-priced and less hassle. Likewise, the seedlings attributes exhibit moderate to high variation with an additive genetics effects on the environments. Best performance accessions under water deficit environment will be beneficial in future wheat breeding schemes and early screening for the attributes suggested in current experiment will be useful for producing best-yielded and drought-tolerance wheat genotypes to sustainable food security. (C) 2020 The Authors. Published by Elsevier B.V. on behalf of King Saud University.

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