共查询到16条相似文献,搜索用时 62 毫秒
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SN_5对月季切花保鲜的作用 总被引:1,自引:0,他引:1
月季花朵硕大 ,色彩丰富 ,是当今国际市场上四大切花之一。然而关于月季切花保鲜的问题仍有待解决。虽然兼有强烈杀菌效果的乙烯作用抑制剂硫代硫酸银 ( STS)已经广泛作为月季切花保鲜剂的主要成分 ,但却存在延缓开花衰老效果不稳定和环境污染问题〔1,2〕。最近有一种以 PPOH(顺式丙烯基膦酸 )为主要成分的月季切花开花延缓剂已投放市场〔3,4〕。虽然 PPOH毒性较低 ,但作为乙烯结构类似物质 ,PPOH是以抑制乙烯自我催化为基本原理的保鲜药剂。黄绵佳等 〔5〕报道 PPOH降低了月季切花盛开前的花径增大率。可见 ,PPOH延缓了月季切花… 相似文献
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多效唑对月季切花衰老的影响 总被引:3,自引:0,他引:3
本文研究了用多效唑处理的月季切花在瓶插期间的形态、生理变化,结果表明,多效唑能明显地缓解月季切花水分胁迫,改善体内水份平衡,促进切花开放,增加花朵鲜重和花径,抑制花瓣溶质外渗,延缓切花呼吸速率的下降和蛋白质降解的速率,从而延缓切花衰老。 相似文献
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月季切花衰老过程中多胺与膜脂过氧化的关系 总被引:7,自引:0,他引:7
以月季切花为材料,研究了月季切花瓶插过程中多胺含量的变化,外源多胺处理对月季药花体内多胺含量的影响以及多胺与膜脂过氧化的关系。结果表明,月季切花瓶插衰老过程中腐胺在前2d略有增加,亚精胺和精胺均呈下降趋势;外源亚精胺和精胺处理均能增加切花体内多胺含量,并能延缓切花衰老和改善切花品质;且亚精胺和精胺处理降低了MDA含量的积累和膜相对透性的上升趋势。 相似文献
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多胺对月季切花衰老过程中生理生化和瓶插寿命的影响 总被引:10,自引:0,他引:10
精胺处理可保持月季切花瓶插前期花瓣还原糖和蛋白质的较高水平、减缓花瓣和叶片细胞膜稼性的增加,减少共 积累以及降低乙烯释放速率,这与精胺处理后月季切花瓶插寿命提高相一致;但亚精胺处理对季切花瓶插寿命和改善观赏品质无明显影响。 相似文献
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表油菜素内酯对月季切花衰老的影响 总被引:8,自引:0,他引:8
0.5mg·L~(-1)表油菜素内酯明显缓解水分对月季切花的胁迫,促进切花体内水分平衡的改善和还原糖含量的增加,抑制花瓣溶质外渗,从而延缓切花衰老。 相似文献
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用0.13%和0.013%植酸对月季切花进行处理,探讨了植酸对月季切花瓶插寿命及衰老过程中一些生理生化指标的影响.结果表明,013%和0.013%植酸处理的切花,瓶插寿命分别延长了2.3 d和1.4d.植酸处理抑制了O-2含量的增加和POD活性的提高,从而减轻了O-2对植物细胞的伤害即抑制丙二醛含量增加,同时抑制了可溶... 相似文献
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Ginette Garello Claudine Ménard Blanche Dansereau Marie-Thérèse Le Page-Degivry 《Plant Growth Regulation》1995,16(2):135-139
The aim of this work was to study the impact of light applied during preharvest culture on the subsequent senescence of cut rose flower and to analyse the possible involvement of abscisic acid (ABA). The longevity of cut rose flowers was longer when rose plants were previously grown under high pressure sodium lamps than under metal halide lamps. A change in light source did not lead to a change in leaf ABA content but significantly affected the petal ABA content. The relationship between ABA level and flower longevity, previously reported for differences of genetic origin, was again observed for culture-induced differences: the higher the ABA level at harvest, the shorter the vase-life observed. 相似文献
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Khatami F. Najafi F. Yari F. Khavari-Nejad R. A. Takaki K. Okumura T. Takahashi K. 《Russian Journal of Plant Physiology》2020,67(4):715-723
Russian Journal of Plant Physiology - The present research aimed to investigate the effect of ethylene on the physiological and molecular responses of the cut roses, Rosa hybrida L. Two cut rose... 相似文献
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The Relationship between Flower Abortion and Endogenous Auxin Content of Rose Shoots 总被引:1,自引:1,他引:0
ROAR MOE 《Physiologia plantarum》1971,24(3):374-379
The amount of endogenous growth substances in stem, flowers and leaves of rose plants grown under different temperature and light conditions has been determined. It appeared to be two main growth promoting factors in the acidic fraction of the ether extract. One of them is assumed to be an auxin, probably indol-3yl-acetic acid (IAA); the other is not identified. The level of auxin was much higher in extracts from shoots grown at high temperature than in shoots grown at low temperature. Increasing light intensity also seemed to increase the auxin content of the shoots. Shoots which developed after a high cut back of the rose stem had a higher auxin content than shoots which developed after a low cut back. These findings are discussed in relation to the effect of temperature, light intensity and cut back practise on blind shoot formation in roses. The result of these investigations strongly indicate that abortion in roses is promoted by a low auxin level in the shoots. 相似文献
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The effects of import of dry matter from the leaves on respiration,metabolism of carbohydrates and development of the corolla werestudied in intact flowering rose shoots and compared with cutflowering shoots bearing either seven leaves on 45 cm stemsor two leaves on 30 cm stems. Over 4 days, corollas of two-leaf shoots imported and respiredless carbon than either the intact or the seven-leaf shootsand they developed more slowly. Starch levels in the corollaat the end of this time depended on the stage at which it wascut; more advanced flowers (stage 34) tended to losestarch whereas less advanced ones (stage 12) tended toaccumulate it. Total carbohydrate in the corolla was dependenton leaf number. Loss of d. wt of leaves indicated that they provided dry matterto the corollas even in cut shoots, and this observation wassupported by the recovery of 14C-leaf assimilate from corollas.The depletion of dry matter from leaves and the slight delayin corolla development of the two-leaf cut shoots suggest thata dynamic source-sink (leavescorolla) relationship existsin the senescing cut rose as in the intact rose. Rosa sp, corolla, respiration, carbon balance, translocation 相似文献