| 吴金怡,常静静,朱雪梅,等.生物刺激素对冬瓜幼苗生长的影响[J].广东农业科学,2025,(3-5):- |
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生物刺激素对冬瓜幼苗生长的影响 |
| Effects of biostimulants on the growth of wax gourd seedlings |
| 投稿时间：2024-11-18 修订日期：2025-01-15 |
| DOI： |
| 中文关键词: 生物刺激素 褐藻寡糖 黄腐酸 乳糖肽 冬瓜 育苗 壮苗指数 |
| 英文关键词: biostimulants fucoidan oligosaccharide fulvicacid actopeptide wax gourd seedlings cultivation sound seedling index |
| 基金项目:2023年省级乡村振兴战略专项种业振兴行动项目,蔬菜优良品种种苗繁育及产业化(2023-NJS-00-010)；国家大宗蔬菜产业技术体系广州综合试验站(CARS-23-G50) |
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| 摘要点击次数: 9 |
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| 中文摘要: |
| 【目的】【目的】筛选出有利于培育冬瓜壮苗的生物刺激素，并确定最适宜的使用浓度。【方法】以‘铁柱2号’黑皮冬瓜为材料，研究了8种生物刺激素（海藻精、海藻肥、多肽、褐藻寡糖、黄腐酸、虾红素、虾青素和乳糖肽）对冬瓜幼苗质量的影响，通过测定不同生物刺激素的种类及浓度处理下植株幼苗的壮苗指数和根系活力，选出最适宜的生物刺激素浓度进行后续试验，再对其不同处理下植株幼苗的根系形态、叶面积、叶绿素含量等生理指标进行主成分分析，对8种生物刺激素促进冬瓜幼苗生长的能力进行排序。【结果】适宜浓度的生物刺激素能显著提高冬瓜幼苗壮苗指数和根系活力，海藻精、海藻肥、黄腐酸、乳糖肽、虾红素、虾青素、褐藻寡糖和多肽的适宜浓度分别为0.5 g/L、0.5 g/L、0.5 g/L、0.5 g/L、0.25 g/L、0.5 g/L、0.2 g/L和0.67 g/L。主成分分析结果显示，以0.2 g/L褐藻寡糖处理的促生效果最好，0.5 g/L黄腐酸和0.5 g/L乳糖肽处理次之。【结论】适宜浓度的生物刺激素能显著提高冬瓜幼苗的壮苗指数和根系活力，其中褐藻寡糖在0.2 g/L浓度下效果最佳，黄腐酸和乳糖肽在0.5 g/L浓度下表现出良好的壮苗效果。以上研究结果为冬瓜的集约化育苗提供了有效且实用的技术方法。 |
| 英文摘要: |
| 【【Objective】 To identify biostimulants conducive to the cultivation of robust wax gourd seedlings and to determine the optimal concentration for their application.【Method】The black-skinned wax gourd‘Tiezhu 2’was used as experimental material,the effects of eight kinds of biostimulants (seaweed extract, seaweed fertilizer, polypeptide, alginate oligosaccharide, fulvic acid, canthaxanthin,astaxanthin and lactopeptide) on the quality of wax gourd seedlings were studied,by measuring the seedling strength index and root vitality of plants under different types and concentrations of biostimulants, the most suitable concentration of biostimulants was selected for subsequent experiments. The physiological indicators of root morphology, leaf area, chlorophyll content, and other physiological parameters of wax gourd seedlings under different treatments were analyzed using Principal Component Analysis, and the efficacy of 8 types of biostimulants in promoting the growth of wax gourd seedlings was ranked.【Result】The appropriate concentration of biostimulants significantly enhances the seedling vigor index and root activity of winter melon seedlings. The optimal concentrations for seaweed extract, seaweed fertilizer, fulvic acid, lactopeptides, astaxanthin, fucoxanthin, alginate oligosaccharides, and peptides are 0.5 g/L, 0.5 g/L, 0.5 g/L, 0.5 g/L, 0.25 g/L, 0.5 g/L, 0.2 g/L, and 0.67 g/L, respectively. Principal component analysis indicates that the best growth-promoting effect was observed with the 0.2 g/L alginate oligosaccharide treatment, followed by the 0.5 g/L fulvic acid and 0.5 g/L lactopeptide treatments.【Conclusion】The optimum concentration of biostimulants could significantly improve the seedling index and root activity of wax gourd seedlings, and the effect of brown alga oligosaccharide was the best at 0.2 g/L, fulvic acid and lactosyl peptide also showed good growth-promoting effect at a concentration of 0.5 g/L. The above results provide an effective and practical method for the intensive breeding of wax gourd seedlings. |
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