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茶叶科学 ›› 2013, Vol. 33 ›› Issue (6): 500-504.doi: 10.13305/j.cnki.jts.2013.06.009

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缺氮条件下不同品种茶树叶片光合特性的变化

林郑和, 钟秋生, 陈常颂*, 游小妹, 陈志辉   

  1. 福建省农业科学院茶叶研究所,福建 福安 355000
  • 收稿日期:2013-03-06 修回日期:2013-05-29 出版日期:2013-12-30 发布日期:2019-09-04
  • 通讯作者: *ccs6536597@163.com
  • 作者简介:林郑和(1975— ),男,福建福安人,博士,主要从事茶树营养生理研究。
  • 基金资助:
    福建省自然科学基金项目(2012J01098)、国家茶叶产业技术体系(nycytx-23)、福建省农科院科技创新团队(CXTD-1-1302)、福建省农科院科技创新团队重点项目(CXTD2011-18)

Photosynthetic Characteristic of Different Tea Cultivars in Response to Nitrogen Deficiency

LIN Zheng-he, ZHONG Qiu-sheng, CHEN Chang-song*, YOU Xiao-mei, CHEN Zhi-hui   

  1. Tea Research Institute, Fujian Academy of Agricultural Sciences, Fu′an 355000, China
  • Received:2013-03-06 Revised:2013-05-29 Online:2013-12-30 Published:2019-09-04

摘要: 以4个茶树品种幼苗为材料,采用盆栽沙培法,研究正常供氮(6βmmol/L)和缺氮胁迫(0βmmol/L)下,茶树营养生长及光合特征的变化。结果表明,与正常供氮相比,缺氮胁迫下,除铁观音品种根系干重没有发生显著降低外,其余各品种根系、茎叶干重都显著下降;黄观音、毛蟹品种叶片的CO2同化速率、气孔导度都显著下降,胞间CO2浓度显著增加,而福云6号、铁观音品种没有发生显著变化;黄观音、毛蟹品种叶片的最大光化学效率(Fv/Fm)显著下降,而福云6号、铁观音品种没有发生显著变化。总之,黄观音、毛蟹品种在缺氮条件下叶片光合系统损害较福云6号、铁观音品种叶片更大。

关键词: 茶树品种, 缺氮, 光合特性, 荧光参数

Abstract: Vegetative propagated seedlings of 4 different tea cultivars grown in pots were fertilized with nutrient solution containing 0βmmol/L and 6βmmol/L nitrogen. The growth and photosynthetic characteristics of tea plant were analyzed under normal and nitrogen deficiency stress condition. The results showed that the DW of stem shoot and root DW decreased significantly under the nitrogen deficiency stress condition except the root DW of ‘Tieguanyin’. Both the CO2 assimilation and stomatal conductance of ‘Huangguanyin’ and ‘Maoxie’ cultivar decreased significantly under nitrogen deficiency but those of ‘Fuyun 6’ and ‘Tieguanyin’ did not change significantly. Intercellular CO2 concentration of ‘Huangguanyin’ and ‘Maoxie’ cultivar increased significantly, whereas ‘Fuyun 6’ and ‘Tieguanyin’ did not change significantly. The maximal photochemical efficiency (Fv/Fm) of ‘Huangguanyin’ and ‘Maoxie’ cultivar decreased significantly, whereas ‘Fuyun 6’ and ‘Tieguanyin’ cultivar did not change significantly. In conclusion, the damage of photosynthetic system on ‘Huangguanyin’ and ‘Maoxie’ cultivar was more serious than that of ‘Fuyun 6’ and ‘Tieguanyin’ cultivar under the nitrogen deficiency stress.

Key words: tea cultivar, nitrogen deficiency, photosynthetic characteristic, fluorescence parameter

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