首页 | 本学科首页   官方微博 | 高级检索  
     

氮形态对不同小麦基因型氮素吸收和光合作用的影响
引用本文:戴廷波,曹卫星,荆奇. 氮形态对不同小麦基因型氮素吸收和光合作用的影响[J]. 生态学杂志, 2001, 0(6): 849-852
作者姓名:戴廷波  曹卫星  荆奇
作者单位:南京农业大学农业部作物生长调控重点开放实验室, 南京, 210095
基金项目:国家自然科学基金资助项目(39670428)
摘    要:利用水培试验,研究了3个小麦基因型对不同形态N素吸收和积累的差异.结果表明,在不同N浓度下,小麦对增铵营养和NH+的吸收速率显著高于NO3-营养,且在较高浓度下,增铵营养处理具有更强的吸收优势.与次敏感型莱州953和钝感型江东门相比,敏感型扬麦158不仅具有较强的NO3-和NH+吸收能力,而且具有最强的增铵营养吸收能力.增铵营养促进了扬麦158和莱州953对NO3-和NH+的吸收,但在一定程度上抑制了江东门对NO3-的吸收.与NO3-营养及NH+营养相比,增铵营养显著提高了扬麦158和莱州953的全株、地上部N积累量和叶片光合速率,而对江东门影响较小因此,增铵营养促进了植株的N吸收,提高了N积累和光合速率,从而促进了小麦生长

关 键 词:小麦  增铵营养  吸收速率  氮积累量  净光合速率
收稿时间:2001-03-20

Effects of nitrogen form on nitrogen absorption and photosynthesis of different wheat genotypes
DAI Tingbo,CAO Weixing,JING Qi. Effects of nitrogen form on nitrogen absorption and photosynthesis of different wheat genotypes[J]. Chinese Journal of Ecology, 2001, 0(6): 849-852
Authors:DAI Tingbo  CAO Weixing  JING Qi
Affiliation:Key Laboratory of Crop Growth Regulation of Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095
Abstract:The experiment was conducted in hydroponics to investigate the difference of three wheat genotypes on nitrogen absorption,accumulation and photosynthesis under three nitrogen forms (NO3-,EAN and NH4+).Nitrogen absorption rate of EAN and NH4+ was significantly higher than that of NO3- in different nitrogen concentrations.Particularly in higher concentration,EAN had much higher absorption potential than NH4+.YM158,as a sensitive genotype to EAN,had higher absorption rate of NO3- and NH4+,and highest of EAN as compared with LZ953 and JDM.EAN highly promoted the absorption of NO3- and NH4+ in YM158 and LZ953,but slightly inhibited that of NO3- in JDM.Compared with NO3- nutrition and NH4+ nutrition,EAN increased nitrogen accumulation in whole plant and aboveground part,and net photosynthetic rate in leaves of YM158 and LZ953,but slightly increased that of JDM.The results indicate that increased growth of wheat under EAN is associated with enhanced nitrogen absorption,increased nitrogen accumulation and net photosynthetic rate.
Keywords:Wheat  Enhanced ammonium nutrition (EAN)  Absorption rate  Nitrogen accumulation  Net photosynthetic rate
点击此处可从《生态学杂志》浏览原始摘要信息
点击此处可从《生态学杂志》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号