全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
北方园艺  2012 

NaCl胁迫对番茄叶片光合特性及蔗糖代谢的影响

, PP. 14-18

Keywords: 番茄,盐胁迫,NaCl,光合作用,蔗糖代谢

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了从碳水化合物生产及代谢的角度分析盐胁迫影响番茄产量和果实品质的原因,以番茄品种‘辽园多丽’为试材,研究不同浓度的NaCl胁迫处理对番茄光合特性及叶片中糖代谢的影响。结果表明盐胁迫导致番茄叶片的净光合速率下降,NaCl浓度越大降低得越多;盐胁迫降低了番茄叶片的气孔导度、胞间CO2浓度和蒸腾速率,降低了番茄叶片的叶绿素a、b和总叶绿素含量,这种降低与NaCl浓度正相关。NaCl胁迫导致番茄叶片中果糖和葡萄糖大量积累,NaCl浓度越高积累得越多;NaCl胁迫降低了番茄叶片中的蔗糖和淀粉含量;NaCl胁迫后,番茄叶片中的转化酶活性以及蔗糖合成酶活性均有所提高,而且随着盐浓度增加而增大。说明NaCl胁迫破坏了番茄叶片的光合机能,降低了光合作用效率,而且盐浓度越大降低得越多;NaCl改变了番茄叶片中的糖代谢方向,显著增加了淀粉和蔗糖的分解,提高了叶片中的果糖和葡萄糖含量,而且这种影响随着盐浓度增加而增大。?

References

[1]  Gao Z F,Sagi M,Lips S H.Carbohydrate metabolism in leaves and assimilate partitioning in fruits of tomato (Lycopersicon esculentum L.) as affected by salinity [J].Plant Science,1998,135:149-159.
[2]  Adele M,Maria S,Maria R P.Tolerance of kikuyu grass to long term salt stress is associated with induction of antioxidant defences [J].Plant Growth Regulation,2003,1:57-62.
[3]  Madore M A.Carbohydrate metabolism in photosynthetic and nonphotosynthetic tissues of variegated leaves of Coleus blumei Benth [J].Plant Physiology,1990,93:617-622.
[4]  齐红岩,李天来,刘海涛.番茄不同部位中糖含量和相关酶活性的研究[J].园艺学报,2005,32(2):239-243.
[5]  牛森.作物品质分析[M].北京:中国农业出版社,1992:46.
[6]  王永章,张大鹏.‘红富士’苹果果实蔗糖代谢与酸性转化酶和蔗糖合酶关系的研究[J].园艺学报,2001,28(3):259-261.
[7]  Julie S,Nicholas B,Robin W,et al.The impact of reduced vacuolar invertase activity on the photosynthetic and carbohydrate metabolism of tomato[J].Planta,1996,200:265-272.
[8]  於新建.蔗糖合成酶与蔗糖磷酸合成酶活性的测定.植物生理学实验手册[M].上海:上海科学技术出版社,1985:148-149.
[9]  Balibrea M E,Dell’Amico J,Bolarn M C.Carbon partitioning and sucrose metabolism in tomato plants growing under salinity[J].Physiologia Plantarum,2000,110:503-511.
[10]  Yeo A.Molecular biology of salt tolerance in the context of whole plant physiology [J].Journal of Experimental Botany,1998,49:915-929.
[11]  Berry J A,Downton W J S.Environmental regulation of photosynthesis Govind J.Photosynthesis [M].New York:Academic Press,1982:263-345.
[12]  任艳芳,何俊瑜.NaCl 胁迫对莴苣幼苗生长和光合性能的影响[J].华北农学报,2008,23(4):149-153.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133