Effects of Environmental Stresses (Heat, Salt, Waterlogging) on Grain Yield and Associated Traits of Wheat under Application of Sulfur-Coated Urea

被引：22

作者：

Altaf, Adil ^{[1
]}

Zhu, Xinkai ^{[1
,2
,3
]}

Zhu, Min ^{[1
,2
]}

Quan, Ma ^{[1
]}

Irshad, Sana ^{[4
]}

Xu, Dongyi ^{[1
]}

Aleem, Muhammad ^{[5
]}

Zhang, Xinbo ^{[1
]}

Gull, Sadia ^{[6
]}

Li, Fujian ^{[1
]}

Shah, Amir Zaman ^{[6
]}

Zada, Ahmad ^{[7
]}

机构：

[1] Yangzhou Univ, Jiangsu Key Lab Crop Genet & Physiol, Jiangsu Key Lab Crop Cultivat & Physiol, Wheat Res Ctr,Coll Agr, Yangzhou 225009, Peoples R China

[2] Yangzhou Univ, Coinnovat Ctr Modern Prod Technol Grain Crops, Yangzhou 225009, Peoples R China

[3] Yangzhou Univ, Joint Int Res Lab Agr & Agriprod Safety, Minist Educ China, Yangzhou 225009, Peoples R China

[4] China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China

[5] Hohai Univ, Coll Environm, Nanjing 210098, Peoples R China

[6] Yangzhou Univ, Coll Hort & Plant Protect, Yangzhou 225009, Peoples R China

[7] Yangzhou Univ, Coll Biosci & Biotechnol, Yangzhou 225009, Peoples R China

来源：

AGRONOMY-BASEL | 2021年 / 11卷 / 11期

基金：

中国国家自然科学基金;

关键词：

abiotic stresses; winter wheat; photosynthetic activity; morphological parameters; controlled-release nitrogen fertilizer; DROUGHT STRESS; GROWTH; TEMPERATURE; RESPONSES; GENOTYPES;

D O I：

10.3390/agronomy11112340

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Abiotic stresses, such as heat, salt, waterlogging, and multiple-stress environments have significantly reduced wheat production in recent decades. There is a need to use effective strategies for overcoming crop losses due to these abiotic stresses. Fertilizer-based approaches are readily available and can be managed in all farming communities. This research revealed the effects of sulfur-coated urea (SCU, 130 kg ha(-1), release time of 120 days) on wheat crops under heat, salt, waterlogging, and combined-stress climatic conditions. The research was done using a completely randomized design with three replicates. The results revealed that SCU at a rate of 130 kg of N ha(-1) showed a significantly (p & LE; 0.05) high SPAD value (55) in the case of waterlogging stress, while it was the lowest (31) in the case of heat stress; the control had a SPAD value of 58. Stress application significantly (p & LE; 0.05) reduced the leaf area and was the highest in control (1898 cm(2)), followed by salt stress (1509 cm(2)), waterlogging (1478 cm(2)), and heat stress (1298 cm(2)). A significantly (p & LE; 0.05) lowest crop yield was observed in the case of heat stress (3623.47 kg ha(-1)) among all stresses, while it was 10,270 kg ha(-1) in control and was reduced up to 35% after the application of heat stress. Among all stresses, the salt stress showed the highest crop yield of 5473.16 kg ha(-1). A significant correlation was observed among growth rate, spike length, yield, and physiological constraints with N content in the soil. The SCU fertilizer was the least effective against heat stress but could tolerate salt stress in wheat plants. The findings suggested the feasibility of adding SCU as an alternative to normal urea to alleviate salt stresses and improve wheat crop growth and yield traits. For heat stress tolerance, the applicability of SCU with a longer release period of -180 days is recommended as a future prospect for study.

引用

页数：19

共 48 条

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