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

doi:10.13305/j.cnki.jts.2013.06.009

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

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

作者信息 +

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

Author information +

文章历史 +

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。

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 CO₂concentration 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.

导出引用

林郑和, 钟秋生, 陈常颂, 游小妹, 陈志辉. 缺氮条件下不同品种茶树叶片光合特性的变化[J]. 茶叶科学. 2013, 33(6): 500-504 https://doi.org/10.13305/j.cnki.jts.2013.06.009

LIN Zheng-he, ZHONG Qiu-sheng, CHEN Chang-song, YOU Xiao-mei, CHEN Zhi-hui. Photosynthetic Characteristic of Different Tea Cultivars in Response to Nitrogen Deficiency[J]. Journal of Tea Science. 2013, 33(6): 500-504 https://doi.org/10.13305/j.cnki.jts.2013.06.009

中图分类号： S571.1 Q945.11

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