Mitigative effect of foliar spraying melatonin on drought stress of cabbage seedlings

doi:10.3969/j.issn.1004-1524.20240161

Acta Agriculturae Zhejiangensis ›› 2025, Vol. 37 ›› Issue (2): 338-348.DOI: 10.3969/j.issn.1004-1524.20240161

• Horticultural Science • Previous Articles Next Articles

Mitigative effect of foliar spraying melatonin on drought stress of cabbage seedlings

REN Yuanlong(), MA Rong, WANG Xiaozhuo(), ZHANG Xueyan

College of Enology and Horticulture, Ningxia University, Yinchuan 750021, China

Received:2024-02-22 Online:2025-02-25 Published:2025-03-20
Contact: WANG Xiaozhuo

Abstract

Abstract:

To investigate the mitigative effect of melatonin (MT) sprayed on leaves and its optimal concentration on drought stress in cabbage (Brassica oleracea L. var. capitata L.) seedlings, this study used the high-altitude cool-weather vegetable variety ‘Zhonggan 21’ as the experimental material. 20% polyethylene glycol-6000 (PEG) solution was used as the osmotic agent for simulating drought stress. Different concentrations of MT (50, 100, 150, 200 μmol·L^-1) were sprayed onto the leaves, and growth and physiological indicators of the cabbage seedlings were measured. The results showed that drought stress significantly inhibited the growth of cabbage seedlings, and spraying different concentrations of MT on the leaves could mitigate the growth inhibition caused by drought stress, with the most significant mitigative effect observed at 100 μmol·L^-1 MT. Under drought stress, after spraying 100 μmol·L^-1 MT, compared to the drought stress control (T0 treatment), the relative chlorophyll content (expressed by SPAD), and contents of chlorophyll a, chlorophyll b, carotenoid, chlorophyll a+b increased by 28.11%, 67.04%, 80.70%, 46.56%, and 70.79%, respectively; photochemical quenching coefficient (qP), maximum photochemical quantum yield (F_v/F_m), actual photosynthetic efficiency [Y(Ⅱ)], electron transport rate (ETR) and maximum fluorescence yield (F_m') increased by 32.88%, 47.29%, 53.19%, 60.22% and 49.56%, respectively; contents of soluble sugars and soluble proteins increased by 147.36% and 150.02% respectively, while non-photochemical quenching coefficient (NPQ), leaf relative electric conductivity and malondialdehyde (MDA) content decreased by 43.65%, 45.11%, and 51.09%, respectively; activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) were 1.37, 1.34, and 2.75 times higher than those under drought stress in leaves, and 1.89, 1.28, and 2.08 times higher in roots. In conclusion, foliar application of 100 μmol·L^-1 MT can significantly promote the growth of cabbage seedlings and effectively mitigate the damage caused by drought stress to the high-altitude cool-weather vegetable variety ‘Zhonggan 21’.

Key words: Brassica oleracea L. var. capitata L., exogenous melatonin, drought stress, growth, physiology, mitigative effect

CLC Number:

S634.1

REN Yuanlong, MA Rong, WANG Xiaozhuo, ZHANG Xueyan. Mitigative effect of foliar spraying melatonin on drought stress of cabbage seedlings[J]. Acta Agriculturae Zhejiangensis, 2025, 37(2): 338-348.

Figures/Tables 10

References 52

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处理 Treatment	株高 Plant height/cm	茎粗 Stem diameter/mm	叶面积 Leaf area/cm²	全株鲜重 Fresh weight of plant/g	全株干重 Dry weight of plant/g
CK	6.00±0.10 a	4.38±0.05 b	50.42±0.85 a	13.95±0.22 a	1.48±0.03 a
T0	4.03±0.09 e	3.67±0.04 d	35.82±0.77 d	6.83±0.28 d	0.94±0.03 d
T1	4.97±0.09 c	3.91±0.06 c	40.00±0.61 c	8.74±0.29 c	1.18±0.02 bc
T2	5.70±0.06 b	4.63±0.02 a	44.91±0.47 b	11.66±0.23 b	1.37±0.03 b
T3	5.17±0.07 c	4.36±0.04 b	41.33±0.54 c	9.31±0.26 c	1.26±0.03 c
T4	4.33±0.07 d	4.00±0.05 c	36.00±0.44 d	7.31±0.22 d	0.99±0.01 d

处理 Treatment	株高 Plant height/cm	茎粗 Stem diameter/mm	叶面积 Leaf area/cm²	全株鲜重 Fresh weight of plant/g	全株干重 Dry weight of plant/g
CK	6.00±0.10 a	4.38±0.05 b	50.42±0.85 a	13.95±0.22 a	1.48±0.03 a
T0	4.03±0.09 e	3.67±0.04 d	35.82±0.77 d	6.83±0.28 d	0.94±0.03 d
T1	4.97±0.09 c	3.91±0.06 c	40.00±0.61 c	8.74±0.29 c	1.18±0.02 bc
T2	5.70±0.06 b	4.63±0.02 a	44.91±0.47 b	11.66±0.23 b	1.37±0.03 b
T3	5.17±0.07 c	4.36±0.04 b	41.33±0.54 c	9.31±0.26 c	1.26±0.03 c
T4	4.33±0.07 d	4.00±0.05 c	36.00±0.44 d	7.31±0.22 d	0.99±0.01 d

处理 Treatment	根系长度 Root length/mm	根系平均直径 Root average diameter/mm	根系表面积 Root surface area/mm²	根系体积 Root volume/mm³	根尖数 Number of apex
CK	4 430.02±144.14 a	8.20±0.178 a	11 137.95±501.08 a	4 189.48±118.91 a	1 201.33±74.54 a
T0	2 214.52±136.67 c	6.66±0.11 c	6 574.59±152.22 d	2 438.44±51.55 d	514.00±24.01 c
T1	3 140.66±138.78 b	7.05±0.04 bc	8 391.45±110.24 c	3 081.95±148.34 c	720.00±20.66 b
T2	4 754.63±156.81 a	7.97±0.16 a	9 889.70±192.77 b	3 559.61±62.83 b	1 159.67±91.04 a
T3	3 623.28±123.66 b	7.33±0.09 b	8 284.04±190.17 c	3 081.54±37.88 c	774.67±23.40 b
T4	2 587.47±135.36 c	6.69±0.20 c	6 234.82±138.12 d	2 455.32±52.38 d	437.00±24.69 c

处理 Treatment	根系长度 Root length/mm	根系平均直径 Root average diameter/mm	根系表面积 Root surface area/mm²	根系体积 Root volume/mm³	根尖数 Number of apex
CK	4 430.02±144.14 a	8.20±0.178 a	11 137.95±501.08 a	4 189.48±118.91 a	1 201.33±74.54 a
T0	2 214.52±136.67 c	6.66±0.11 c	6 574.59±152.22 d	2 438.44±51.55 d	514.00±24.01 c
T1	3 140.66±138.78 b	7.05±0.04 bc	8 391.45±110.24 c	3 081.95±148.34 c	720.00±20.66 b
T2	4 754.63±156.81 a	7.97±0.16 a	9 889.70±192.77 b	3 559.61±62.83 b	1 159.67±91.04 a
T3	3 623.28±123.66 b	7.33±0.09 b	8 284.04±190.17 c	3 081.54±37.88 c	774.67±23.40 b
T4	2 587.47±135.36 c	6.69±0.20 c	6 234.82±138.12 d	2 455.32±52.38 d	437.00±24.69 c

处理 Treatment	综合指标值Comprehensive Index Value				隶属函数值Membership Function Value				D值 D value	排名 Ranking
处理 Treatment	Cl₁	Cl₂	Cl₃	Cl₄	U(X₁)	U(X₂)	U(X₃)	U(X₄)	D值 D value	排名 Ranking
CK	1.101	1.344	0.876	0.432	1	1	1	0.605	0.995	1
T0	-1.330	0.888	-0.892	-0.344	0	0.818	0.282	0.327	0.057	6
T1	-0.336	0.286	-0.323	-0.768	0.409	0.577	0.776	0.176	0.423	4
T2	1.076	-0.508	-1.586	0.402	0.989	0.260	0	0.594	0.924	2
T3	0.3	-1.158	0.634	-1.258	0.670	0	0.901	0	0.627	3
T4	-0.811	-0.852	0.648	1.537	0.214	0.123	0.907	1	0.230	5
权重Weight					ω₁=0.912	ω₂=0.059	ω₃=0.018	ω₄=0.011

Mitigative effect of foliar spraying melatonin on drought stress of cabbage seedlings

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[1]	HU Rui, MA Liya, WAN Qun, WANG Ya, CAO Yaoyao, SHAO Sicheng, GE Jing, WU Xiangwei, YU Xiangyang. Effect of growth-promoting bacteria on the degradation of thiamethoxam in Brassica rapa subsp. chinensis [J]. Acta Agriculturae Zhejiangensis, 2025, 37(2): 394-404.
[2]	CHEN Yutiao, YAN Chuan, HONG Xiaofu, SONG Jiayu. Effects of submergence at tillering stage on growth characters, yield formation and potassium uptake of japonica inbred rice [J]. Acta Agriculturae Zhejiangensis, 2024, 36(9): 1990-1999.
[3]	MIN Jiangyan, TANG Zhuolei, YANG Xue, HUANG Xiaoyan, HUANG Kaifeng, HE Peiyun. Effect of different drought-rewatering modes on growth and yield of Tartary buckwheat [J]. Acta Agriculturae Zhejiangensis, 2024, 36(9): 2000-2009.
[4]	LI Ziwei, ZHANG Yawen, SONG Bin, HOU Fengxiang, JIN Junjie, ZHAO Yan, LU Lizhi. Growth curve fitting and the optimal marketing age of Wenzhou Red chicken [J]. Acta Agriculturae Zhejiangensis, 2024, 36(8): 1741-1752.
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[8]	ZHU Xuehui, XIE Hui, HAN Shouan, WANG Min, BAI Shijian, MA Yunlong, WANG Yanmeng, MAI Sile, PAN Mingqi, ZHANG Wen. Effect of two plant growth regulators on the fruit quality of ‘Centennial Seedless’ grapes [J]. Acta Agriculturae Zhejiangensis, 2024, 36(6): 1309-1319.
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[10]	MA Li’na, TIAN Jinyang, WANG Jin, ZHAO Zhengwei, MA Qing. Association of FGF5 and COQ9 gene polymorphism and growth traits in Tan sheep [J]. Acta Agriculturae Zhejiangensis, 2024, 36(5): 1015-1023.
[11]	HE Yushan, ZHU Haixia. Preliminary study on weeding mechanism of Alternaria gaisen GD-011 strain [J]. Acta Agriculturae Zhejiangensis, 2024, 36(5): 1094-1101.
[12]	LUZI Zhenggang, ZHU Lixin, JI Hongbing, WANG Kang. Research progress in remediation of soil heavy metal pollution by Sphingosinomonas [J]. Acta Agriculturae Zhejiangensis, 2024, 36(5): 1208-1216.
[13]	YANG Mingfeng, JI Chunrong, LIU Yong, BAI Shujun, CHEN Xue, LIU Ailin. Effects of continuous drought stress on cotton growth and soil drought threshold at flowering and boll stage [J]. Acta Agriculturae Zhejiangensis, 2024, 36(4): 738-747.
[14]	LIU Yancen, GUO Junxian, GUO Yang, SHI Yong, HUANG Hua, LI Longjie, ZHANG Zhenzhen. Detection of relative chlorophyll content of field cantaloupe canopy at different growth stages based on digital images [J]. Acta Agriculturae Zhejiangensis, 2024, 36(3): 651-661.
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