LIAN Hua,WANG Meng,MA Guangshu,et al.Effect of Phosphorus on the Physiological Indexes of Muskmelon Seedling[J].Northern Horticulture,2015,39(23):14-17.[doi:10.11937/bfyy.201523004]
磷素对甜瓜幼苗期生理指标的影响
- Title:
- Effect of Phosphorus on the Physiological Indexes of Muskmelon Seedling
- Keywords:
- phosphorus element; muskmelon; physiological indexes
- 文献标志码:
- A
- 摘要:
- 以“金妃”甜瓜为试材，采用基质培养方法通过测定甜瓜幼苗期叶片叶绿素和硝态氮含量以及硝酸还原酶、过氧化氢酶、过氧化物酶、抗坏血酸过氧化物酶活性变化规律，研究了不同磷素用量对甜瓜幼苗期生理指标的影响。结果表明：适宜磷素用量(即0.9~1.2 mmol/L)时，可以显著提高甜瓜叶片叶绿素和硝态氮含量，各种保护性酶活性得到有效改善和提高，促进了光合作用，为后期甜瓜产量形成、品质改善奠定了良好的生理基础。而当磷素用量低于0.6 mmol/L或高于1.5 mmol/L时，各种生理活性物质含量或保护性酶活性均大幅降低。
- Abstract:
- In the experiment，muskmelon(‘Jinfei’)was used as experimental material，the way of substrate culture was adopted to study the effect of different dosages of phosphorus element on the physiological indexes of muskmelon seedling through measuring change laws of the chlorophyll content，nitrate nitrogen content，nitrate reductase activity，catalase activity，peroxidase activity and ascorbic acid oxidase activity.The results showed that appropriate dosage of phosphorus element (0.9-1.2 mmol/L) could significantly promote photosynthesis through enhancing chlorophyll content and nitrate nitrogen content，improving and increasing various protected enzymes activity which could provide the physiological basis for the yield formation and quality improvement at the later stage of melon.While phosphorus dosage was less than 0.6 mmol/L or higher than 1.5 mmol/L，various physiological substance content or protective enzyme activity were decreased significantly.
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备注/Memo
第一作者简介：廉华(1970-)，女，黑龙江密山人，硕士，教授，现主要从事蔬菜栽培生理等研究工作。E-mail：mgs_lh@sina.com.责任作者：马光恕(1969-)，男，山东海阳人，硕士，教授，现主要从事蔬菜栽培生理等研究工作。E-mail：mgs_lh@163.com.基金项目：黑龙江省教育厅科技资助项目(12531454)；黑龙江八一农垦大学校级大学生创新训练计划资助项目(xc2014002)。