Heat-Stress-Induced Changes in Physio-Biochemical Parameters of Mustard Cultivars and Their Role in Heat Stress Tolerance at the Seedling Stage

被引:3
|
作者
Sakpal, Ashwini [1 ]
Yadav, Sangita [1 ]
Choudhary, Ravish [1 ]
Saini, Navinder [2 ]
Vasudev, Sujata [2 ]
Yadava, Devendra K. K. [3 ]
Ercisli, Sezai [4 ,5 ]
Marc, Romina Alina [6 ]
Yadav, Shiv K. K. [1 ]
机构
[1] ICAR Indian Agr Res Inst, Div Seed Sci & Technol, Pusa Campus, New Delhi 110012, India
[2] Pusa Campus Indian Agr Res Inst, Div Genet, Pusa Campus, New Delhi 110012, India
[3] ICAR Indian Council Agr Res, New Delhi 110001, India
[4] Ataturk Univ, Fac Agr, TR-25240 Erzurum, Turkiye
[5] Ata Teknokent, HGF Agro, TR-25240 Erzurum, Turkiye
[6] Univ Agr Sci & Vet Med, Fac Food Sci & Technol, Food Engn Dept, Cluj Napoca 400372, Romania
来源
PLANTS-BASEL | 2023年 / 12卷 / 06期
关键词
antioxidant; heat; high-temperature stress; mustard cultivars; proline content; seedling stage; survival percentage; thermo-tolerant; ANTIOXIDANT ENZYMES; WHEAT; PROLINE; GERMINATION; ACCUMULATION; RESPONSES; BEHAVIOR; GROWTH; PLANTS; YIELD;
D O I
10.3390/plants12061400
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
In the era of global warming, heat stress, particularly at the seedling stage, is a major problem that affects the production and productivity of crops such as mustard that are grown in cooler climates. Nineteen mustard cultivars were exposed to contrasting temperature regimes-20 degrees C, 30 degrees C, 40 degrees C and a variable range of 25-40 degrees C-and evaluated for changes in physiological and biochemical parameters at the seedling stage to study their role in heat-stress tolerance. Exposure to heat stress showed detrimental effects on seedling growth as revealed by reduced vigor indices, survival percentages, antioxidant activity and proline content. The cultivars were grouped into tolerant, moderately tolerant and susceptible based on the survival percentage and biochemical parameters. All the conventional and three single-zero cultivars were found to be tolerant and moderately tolerant, respectively, while double-zero cultivars were reckoned to be susceptible except for two cultivars. Significant increases in proline content and catalase and peroxidase activities were found associated with thermo-tolerant cultivars. More efficient antioxidant system activity and proline accumulation were noticed in conventional along with three single-zero (PM-21, PM-22, PM-30) and two double-zero (JC-21, JC-33) cultivars that might have provided better protection to them under heat stress than the remaining one single- and nine double-zero cultivars. Tolerant cultivars also resulted in significantly higher values of most of the yield attributing traits. Heat-stress-tolerant cultivars could easily be selected based on the survival percentage, proline and antioxidants at the seedling stage and included as efficient cultivars in breeding programs.
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页数:21
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