摘要
试验选用燕麦磷低效品种MANIC和磷高效品种V7,设正常供磷(1.0 mmo1/L的KH2PO4)和低磷胁迫(0.1 mmo1/L的KH_2PO_4)两个水平,通过水培试验,研究不同磷效率燕麦品种根系分泌的酸性磷酸酶和不同叶片酸性磷酸酶活性的差异。结果表明,磷高效燕麦品种V7和磷低效燕麦品种MANIC在低磷胁迫下其根系和叶片分泌的酸性磷酸酶活性显著升高,说明植物体内分泌酸性磷酸酶是对低磷胁迫的适应性机制。品种V7其根系和叶片分泌的酸性磷酸酶活性比MANIC品种的高,且差异显著,说明品种V7在缺磷条件下对磷元素的利用效率较高。
This experiment selected phosphorus inefficient varieties MANIC and phosphorus efficient varieties V7,under normal P（1.0 mmol/L KH2PO4）and low phosphorus stress（0.1 mmol/L KH2PO4） two levels,through hydroponic experiments,and the differences of phosphorus efficiency of different oat varieties root secreted acid phosphatase and acid phosphatase activity in different leaves were studied.The results showed that the phosphatase activity of root and leaf secreted by the high efficient oat cultivar V7 and the low efficiency oat cultivar MANIC increased significantly under low phosphorus stress,indicating that the secretion of acid phosphatase in plants was an adaptive mechanism for low phosphorus stress.The activity of acid phosphatase secreted by root and leaf of V7 were higher than that of MANIC,and the difference was significant.The results showed that the utilization efficiency of phosphorus was higher under the condition of phosphorus deficiency.
出处
《北方农业学报》
2017年第5期55-58,共4页
Journal of Northern Agriculture
基金
国家自然科学基金项目(31460328)
关键词
低磷胁迫
燕麦
磷效率
酸性磷酸酶
Low phosphorus stress
Oat
Phosphorus efficiency
Acid phosphatase
作者简介
王伟伟（1990-）,男,硕士研究生,研究方向为燕麦营养遗传.
通讯作者：齐冰洁（1971-）,女,副教授,博士,主要从事燕麦遗传育种的研究工作.
