胺鲜酯浸种对白首乌种子萌发及幼苗生长的影响

doi:10.16178/j.issn.0528-9017.20250578

摘要/Abstract

摘要：

白首乌是江苏省滨海县特色药食同源作物,对当地农业经济发展具有重要意义。本研究系统考察了植物生长调节剂胺鲜酯(DA-6)对白首乌种子萌发及幼苗生长的作用机制。结果表明,DA-6浸种处理可显著(p<0.05)提升种子发芽率、发芽势、发芽指数和活力指数,并可增加幼苗株高、茎粗、根长及鲜重。同时,生理指标试验发现,DA-6能有效增强超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)等抗氧化酶的活性,降低丙二醛(MDA)含量。值得注意的是,15 mg·L^-1的DA-6浸种处理表现出最佳效果,各项指标均显著优于对照组。综合分析表明,DA-6可能是通过调控抗氧化系统以及减轻膜脂过氧化损伤,从而促进白首乌的生长发育,这一发现为白首乌的高效栽培提供了理论依据。

关键词: 白首乌, 胺鲜酯, 种子萌发, 幼苗生长

Abstract:

Cynanchum bungei Decne. is a characteristic medicinal and edible crop in Binhai County, Jiangsu Province, which is of great significance to the development of local agricultural economy. This study systematically investigated the mechanism of the plant growth regulator diethyl aminoethyl hexanoate (DA-6) on seed germination and seedling growth of Cynanchum bungei. The results indicated that seed soaking with DA-6 significantly (p<0.05) enhanced germination rate, germination energy, germination index, and vigor index, while also promoting seedling height, stem diameter, root length, and fresh weight. Physiological analyses revealed that DA-6 effectively increased the activity of antioxidant enzymes such as superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), and reduced malondialdehyde (MDA) content. It is noteworthy that the seed soaking treatment with DA-6 at a concentration of 15 mg·L^-1 demonstrated the optimal effect, with all indicators significantly better than those of the control group. The comprehensive analysis revealed that DA-6 may promote the growth and development of Cynanchum bungei by regulating the antioxidant system and reducing membrane lipid peroxidation damage, which provides a theoretical basis for the efficient cultivation of Cynanchum bungei.

Key words: Cynanchum bungei Decne., diethyl aminoethyl hexanoate, seed germination, seedling growth

中图分类号:

S567.7

吴承东, 沈明晨, 张明, 闫凯旋, 朱丽, 陈镭. 胺鲜酯浸种对白首乌种子萌发及幼苗生长的影响[J]. 浙江农业科学, 2025, 66(11): 2680-2684.

WU Chengdong, SHEN Mingchen, ZHANG Ming, YAN Kaixuan, ZHU Li, CHEN Lei. Effect on seed germination and seedling growth of soaking seeds with diethyl aminoethyl hexanoate in Cynanchum bungei Decne.[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(11): 2680-2684.

图/表 3

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DA-6质量浓度/(mg·L^-1)	发芽率/%	发芽势/%	发芽指数	活力指数
0	66.00±3.06 d	50.00±2.89 c	6.00±0.35 d	0.92±0.08 d
5	75.33±2.52 c	60.00±2.08 b	8.25±0.42 c	1.56±0.12 c
10	78.00±2.08 b	63.33±1.53 b	8.78±0.38 b	1.82±0.15 b
15	86.67±1.53 a	76.67±1.53 a	10.56±0.49 a	2.83±0.21 a
20	83.33±2.08 ab	70.00±2.08 a	9.58±0.45 ab	2.25±0.18 ab
25	80.00±2.08 b	66.67±2.08 ab	9.06±0.42 b	1.98±0.16 b

DA-6质量浓度/(mg·L^-1)	发芽率/%	发芽势/%	发芽指数	活力指数
0	66.00±3.06 d	50.00±2.89 c	6.00±0.35 d	0.92±0.08 d
5	75.33±2.52 c	60.00±2.08 b	8.25±0.42 c	1.56±0.12 c
10	78.00±2.08 b	63.33±1.53 b	8.78±0.38 b	1.82±0.15 b
15	86.67±1.53 a	76.67±1.53 a	10.56±0.49 a	2.83±0.21 a
20	83.33±2.08 ab	70.00±2.08 a	9.58±0.45 ab	2.25±0.18 ab
25	80.00±2.08 b	66.67±2.08 ab	9.06±0.42 b	1.98±0.16 b

DA-6质量浓度/(mg·L^-1)	株高/cm	茎粗/cm	根长/cm	鲜重/g
0	9.20±0.52 d	0.22±0.02 d	7.60±0.42 d	0.13±0.01 d
5	10.45±0.42 c	0.24±0.02 c	8.45±0.38 c	0.16±0.01 c
10	10.95±0.49 b	0.25±0.02 c	8.85±0.45 b	0.18±0.01 b
15	12.58±0.57 a	0.29±0.02 a	10.45±0.53 a	0.27±0.02 a
20	12.30±0.53 a	0.28±0.02 a	10.20±0.48 a	0.26±0.02 a
25	11.35±0.50 b	0.26±0.02 b	9.25±0.42 b	0.20±0.01 b

DA-6质量浓度/(mg·L^-1)	株高/cm	茎粗/cm	根长/cm	鲜重/g
0	9.20±0.52 d	0.22±0.02 d	7.60±0.42 d	0.13±0.01 d
5	10.45±0.42 c	0.24±0.02 c	8.45±0.38 c	0.16±0.01 c
10	10.95±0.49 b	0.25±0.02 c	8.85±0.45 b	0.18±0.01 b
15	12.58±0.57 a	0.29±0.02 a	10.45±0.53 a	0.27±0.02 a
20	12.30±0.53 a	0.28±0.02 a	10.20±0.48 a	0.26±0.02 a
25	11.35±0.50 b	0.26±0.02 b	9.25±0.42 b	0.20±0.01 b

DA-6质量浓度/ (mg·L^-1)	SOD活性/ (U·g^-1)	POD活性/ (U·g^-1·min^-1)	CAT活性/ (U·g^-1·min^-1)	MDA含量/ (μmol·g^-1)
0	165.67±5.86 d	123.25±4.32 d	71.00±3.25 d	9.14±0.42 a
5	192.33±6.25 c	145.50±5.18 c	82.67±3.86 c	7.86±0.35 b
10	210.50±5.67 b	162.75±4.89 b	89.33±3.52 b	7.02±0.28 d
15	235.67±6.50 a	186.33±5.67 a	98.50±4.12 a	6.25±0.25 e
20	228.33±5.92 a	178.67±5.25 a	94.33±3.98 a	6.58±0.28 e
25	205.00±5.75 b	156.25±4.67 b	85.67±3.65 b	7.35±0.32 c