| 赵长延,贾秀苹,柳延涛,刘胜利,雷中华,王鹏,朱志锋,董红业,吕增帅,段维,万素梅.复合盐碱胁迫下外源褪黑素对油葵光合特性及产量的影响[J].干旱地区农业研究,2025,(6):39~46 |
| 复合盐碱胁迫下外源褪黑素对油葵光合特性及产量的影响 |
| Effects of exogenous melatonin on photosynthetic characteristics and yield of oil sunflower under compound saline\|alkali stress |
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| DOI:10.7606/j.issn.1000-7601.2025.06.04 |
| 中文关键词: 油葵 褪黑素 盐碱胁迫 光合特性 产量 |
| 英文关键词:oil sunflower melatonin saline\|alkali stress photosynthesis yield |
| 基金项目:新疆生产建设兵团科技创新人才项目(2023CB007-06);新疆生产建设兵团重点领域科技攻关项目(2024AB014);新疆生产建设兵团英才青年项目;新疆维吾尔自治区重大科技专项(2022A02008-5);新疆维吾尔自治区重点研发计划项目(2023B02008-1) |
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| 中文摘要: |
| 以盐碱敏感型(‘YE988’)、不耐盐碱型(‘S2102’)、耐盐碱型(‘龙葵杂4号’)和强耐盐碱型(‘出油至尊909S’)油葵为试验材料,在0.6%复合盐碱浓度下设置0(CK)、1(K1)、10(K2)、100 μmol·L-1(K3)4个褪黑素浓度,探索不同褪黑素浓度处理对复合盐碱胁迫下油葵光合特性及产量的影响。结果表明:与CK相比,K1、K2、K3处理均可改善盐碱胁迫下油葵光合特性,开花期净光合速率呈先增后减趋势,‘YE988’、‘S2102’、‘龙葵杂4号’和‘出油至尊909S’在K2处理达到最大值,分别为49.38、39.47、38.64、43.16 μmol·m-2·g-1,较CK提高2.9%~53.9%;产量在K2处理分别达到5 700.77、5 855.45、6 005.65、6 171.96 kg·hm-2,较CK提高6.6%~22.3%。综上,褪黑素能够缓解盐碱胁迫对油葵光合作用的不利影响,提高其耐盐碱特性,本试验条件下10 μmol·L-1处理效果最佳。 |
| 英文摘要: |
| The saline\|alkaline sensitive type (‘YE988’), saline\|alkaline intolerant type (‘S2102’), saline\|alkaline tolerant type (‘Longkuiza No.4’), and strong saline\|alkaline tolerant type (‘Chuyouzhizun 909S’) were used as experimental materials. Four melatonin concentrations of 0 (CK), 1 (K1), 10 (K2), and 100 μmol·L-1 (K3) were set at 0.6% compound saline\|alkaline concentration to explore the effects of different melatonin concentrations on photosynthetic characteristics and yield of oil sunflower under compound saline\|alkaline stress. The results showed that compared with CK treatment, K1, K2, and K3 treatments could improve the photosynthetic characteristics of oil sunflower under saline\|alkali stress, and the net photosynthetic rate at the flowering stage increased first and then decreased. ‘YE988’, ‘S2102’, ‘Longkuiza No.4’, and ‘Chuyouzhizun 909S’ reached the maximum under K2 treatment, which were 49.38, 39.47, 38.64, and 43.16 μmol·m-2·g-1, respectively, which were 2.9%~53.9% higher than CK. The yield of K2 treatment reached 5700.77, 5 855.45, 6 005.65, and 6 171.96 kg·hm-2, respectively, which was 6.6%~22.3% higher than that of CK. In summary, melatonin can alleviate the adverse effects of saline\|alkali stress on photosynthesis of oil sunflower and improve its saline\|alkali tolerance. Under the conditions of this experiment, the 10 μmol·L-1 treatment had the best effect. |
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