摘要
主要研究了番红花根系生长对铝胁迫的生理生化响应以及添加外源多胺对番红花铝胁迫状况下的改善作用。测定了铝胁迫下和添加外源多胺情况下根伸长、Al含量、根尖细胞活力、MDA含量以及抗氧化酶活性,结果表明,在铝胁迫的情况下番红花根尖生长明显受抑,根尖铝含量、埃文思兰吸光度、MDA含量随Al3+的增加逐渐增加。在0.05、0.2mmol/LAl3+胁迫下,抗氧化酶活性随Al3+浓度升高而升高。提高Al3+浓度到0.5mmol/L时,抗氧化酶活性反而降低。添加1mmol/L多胺可显著改善铝胁迫下番红花的生长和生理生化状况,在3种多胺中腐胺效果最好。
The growth and physiological change of saffron （Crocus sativus L.） under aluminum （Al） stress and the improvement of Al stress by exogenous polyamines were studied. Under aluminum stress and adding exogenous polyamines conditions, root elongation, aluminum content, root tip cell viability, MDA content and antioxidant enzyme activity were measured. The results showed that aluminum stress significantly inhibited the growth of saffron root-tip. Root tip aluminum content, Evans blue absorbance, MDA content increased with the gradual increase of Al^3＋ concentration. In 0.05, 0.2 mmol/L Al^3＋ stress, antioxidant enzyme activities increased with the AP＋ concentration increase. When the concentration of Al3＋ was 0.5 mmol/L, the antioxidant enzyme activity was decreased. Add 1 mmol/L polyamines can significantly improve the saffron under aluminum stress growth and physio-biochemical conditions. Among the three polyamines, putrescine showed the best results.
出处
《中国农学通报》
CSCD
北大核心
2010年第11期148-151,共4页
Chinese Agricultural Science Bulletin
基金
北京工商大学青年教师科研启动基金资助项目(校级科技09-02)
关键词
番红花
多胺
铝胁迫
Crocus sativus L.
polyamines
Al stress
