MA Cunjin,REN Shiwei,HU Zhaoping,et al.Effect of Mannitol Spraying on the Growth and Development of Pepper Under Salt Stress[J].Northern Horticulture,2016,40(09):11-15.[doi:10.11937/bfyy.201609003]
盐胁迫下喷施不同浓度甘露醇对辣椒生长发育的影响
- Title:
- Effect of Mannitol Spraying on the Growth and Development of Pepper Under Salt Stress
- 文献标志码:
- A
- 摘要:
- 以线椒“8819”为试材，采用盆栽的方法，盐胁迫下设置甘露醇不同喷施浓度（0、0.02、0.10、0.50、2.50、12.50 g/L），整盆取样并进行各指标测定，研究在盐胁迫下甘露醇不同浓度喷施对辣椒根系和地上部生长发育的影响。结果表明：在0.02～2.50 g/L浓度范围内，甘露醇喷施促进了辣椒的生长发育，随着甘露醇喷施浓度增加，辣椒生长各指标（株高、茎粗、SPAD）、各器官干物质积累量、根冠比、根系形态指标和根系生理活性指标均呈先升后降的趋势，其中以0.10 g/L浓度处理效果最好；当喷施浓度达到12.50 g/L以上时各指标均低于对照，说明甘露醇高浓度喷施对盐胁迫下辣椒的生长发育产生抑制作用。综上，盐胁迫下甘露醇在0.02～2.50 g/L浓度范围内喷施促进了辣椒的生长发育，其中以0.10 g/L浓度处理效果最好，超过12.50 g/L后对辣椒的生长发育产生抑制作用。
- Abstract:
- Taking Xian Jiao ‘8819’ as test material，using the method of the potted pepper，six mannitol spraying levels：0 g/L，0.02 g/L，0.10 g/L，0.50 g/L，2.50 g/L，12.50 g/L were designed to measure each index，to study the effects of mannitol spraying on the growth and development of the root and shoot of pepper under salt stress.The results showed that，mannitol spraying promoted the growth and development of pepper at low levels.With the increase of the concentration of mannitol spraying，all the tested terms：seedling emergence rate，germination index，plant height，dry matter accumulation of various organs，root shoot ratio，morphological index and physiological activity of root system showed a trend of rising first and decreased then.Among them，the treatment with the concentration of 0.10 g/L was the best.All the tested terms were lower than CK when the treatment concentration achieved 12.50 g/L.The results showed that a high concentration of mannitol spraying had a inhibiting effect on the growth of pepper.In summary，mannitol spraying promoted the growth of pepper under salt stress at low levels which were best at the concentration of 0.10 g/L，but had a inhibiting effect on the growth of pepper when the treatment concentration achieved 12.50 g/L.
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备注/Memo
第一作者简介：马存金（1989-），男，硕士，助理农艺师，现主要从事作物栽培生理及新型肥料等研究工作。E-mail：macunjin@kingenta.com.基金项目：“十二五”国家科技支撑计划资助项目（2011BAD11B02）；山东省自主创新专项资助项目（2012CX90202）。