文献类型： 外文期刊

作者： Nazim, Muhammad ¹ ; Li, Xiangyi ¹ ; Tariq, Akash ¹ ; Shahzad, Khurram ⁷ ; Muhammad, Murad ¹ ; Dawei, Zhang ⁸ ; Zeng, Fanjiang ¹ ;

作者机构： 1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Key Lab Desert Plant Roots Ecol & Vegetat, Urumqi 830011, Peoples R China

2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Key Lab Ecol Safety & Sustainable Dev Arid Lands, Urumqi 830011, Peoples R China

3.Cele Natl Stn Observat & Res Desert Grassland Ecos, Cele 848300, Peoples R China

4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

5.UAB, Global Ecol Unit, CREAF, CSIC, Barcelona 08193, Catalonia, Spain

6.CREAF, Cerdanyola Del Valles 08193, Catalonia, Spain

7.Lasbela Univ Agr Water & Marine Sci, Fac Agr, Dept Soil Sci, Uthal 90150, Balochistan, Pakistan

8.Xinjiang Acad Agr Sci, Econ Crop Res Inst, Urumqi 830091, Peoples R China

关键词： Antioxidant activities; Biochemical performance; Gossypium hirsutum; K2SiO3; Photosynthetic pigments; Sandy soil; Water Deficit Stress

期刊名称：JOURNAL OF CROP HEALTH

ISSN： 2948-264X

年卷期： 2024 年 76 卷 4 期

页码：

收录情况： SCI

摘要： Cotton is a highly sensitive crop to drought stress. Consequently, it is crucial to devise strategies that optimize crop production in conditions of limited water availability. While potassium silicate has demonstrated effectiveness in mitigating drought stress in various crops, its specific impact on different cotton cultivars under drought conditions remains not fully clarified. This research aimed to assess the efficacy of six potassium silicate levels (0, 100, 200, 300, 400 and 500 mg L-1) on four cotton genotypes (Zong main-113, Xin Nong-525, Xin lu Zhong-55, and Xin lu Zhong-66) under two field capacity levels (80% and 50% FC) in a sand culture. Foliar applied potassium silicate significantly improved photosynthetic efficiency, shoot biomass, root biomass, and leaf area under water stress (50% FC). The most substantial reduction in H2O2, malondialdehyde levels, and electrolyte leakage was recorded with potassium silicate applied at a rate of 400 mg L-1. This concentration effectively mitigated reactive oxygen species accumulation, safeguarding plants against oxidative damage at 50% FC. Furthermore, potassium silicate contributed to maintaining water status, resulting in increased leaf water content and elevated water-soluble proteins in cotton plants. The order of drought resistance (50% FC) with the application of potassium silicate at 400 mg L-1 was Zong Mian-113, Xin Nong-525, Xin lu Zhong-55, and Xin lu Zhong-66. The findings could help in selection of drought resistance cultivars of cotton in water limited conditions.