农业科学与技术（英文版）
農業科學與技術（英文版）
농업과학여기술（영문판）
AGRICULTURAL SCIENCE & TECHNOLOGY
2008年
3期
17-24
,共8页
张(丰 刀)(女)%姚舸%钦佩
張(豐 刀)(女)%姚舸%欽珮
장(봉 도)(녀)%요가%흠패
Castor%Salt stress%K+/Na+%Osmotic adjustment%Chlorophyll fluorescencePrograms Funded by Ministry of Science & Technology of
[Objective] The aim of this study is to reveal the salt resistance of castor. [Method] Under salt stress, the growth, osmotic potential, chlorophyll fluorescence parameters, Na+ and K+ uptakes and transports in the seedlings of two Ricinus communis varieties (cultivar saline-alkali land), were comparatively studied. [Result] Wild castor preformed better in halophilism than that of cultivar castor Zibi 6 under the NaCl treatment. One of the salt tolerant mechanisms of castor is to improve K+ uptake and transport to overground portion, thus to maintain K+/Na+ homeostasis in leaves; on the other hand, the high stability of Photoreaction System Ⅱ (PS Ⅱ) plays a key role in maintaining the leaf photosynthetic rate under salt stress. [Conclusion] The results of this study provided theoretical basis for the extension and application of castor in saline beach.
