外源一氧化氮对百合鲜切花的生理效应.pdf

39 1 Vo.l 39 No. 1 2011 1 JOURNAL OF NORTH EAST FORESTRY UNIVERSITY Jan. 2011 1) 曾长立 陈禅友 (, , 430056) 以硝普钠( SNP)为 NO( 一氧化氮) 供体亚甲基蓝( MB- 1)为 NO 清除剂, 重点研究NO 对百合切花 寿命与生 效应的影响结果表明: 0. 1mmol# L- 1 SNP释放的 NO 可显著延长百合切花的瓶插寿命, 增大最大花 茎, 延长达到最大花茎所需时间, 增加切花花枝鲜质量, 缓解切花中可溶性蛋白质的降解速度, 显著提高花瓣中抗 氧化酶 SOD与 POD 活性, 延缓丙二醛质量摩尔浓度与游离脯氨酸质量分数升高而 MB - 1作为 NO 清除剂, 能 部分或完全逆转 NO的这些生 效应 百合鲜切花; 一氧化氮; 瓶插寿命; 生 机制 Q945. 48; Q949. 1+ 8. 23 E ffects of E xogenous N itric Ox ide on Phy sio logical Indexe s of Cut L ily Flow ers/ Zeng Changl,i Chen Chanyou ( School of Life Sciences, Jianghan University, Wuhan 430056, P. R. China) / / Journal of Northeast Forestry University. - 2011, 39( 1). - 46~ 48 An expermi ent was conducted to study the effect of exogenous nitric oxide ( NO) on the vase life and physiological in- dexes of cu t lily flow ers using sod ium n itroprusside ( SNP) as NO donor and M ethylene blue (MB-1) as NO scavenger. Results show ed that NO released by 0. 1mm ol# L- 1 SNP cou ld s ignificantly extend the vase life and increase them axmi um flow er diam eter of cut lily flow ers, prolong the tmi e the flow ers reach them axmi um flow er diam eter, and increase the fresh w eight of flow er stems. M oreover, SNP could reduce the degradation rate of solub le protein, m arkedly enhance activities of SOD and POD in the petals, and inh ib it the increase ofMDA and free proline contents. H owever, as a scavenger of NO, MB-1 cou ld partially or entirely reverse the active effects of NO on the physiological indexes of cut lily flow ers. K eyw ord s Fresh cut lily flow ers; N itric ox ide; Vase life; Physiologicalm echanism