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保鲜剂及冷藏对鹤望兰切花瓶插品质的影响 总被引:2,自引:0,他引:2
本文探讨不同保鲜剂、预处理液及冷藏时间对鹤望兰切花瓶插寿命和观赏品质的影响。结果表明,供试的8组瓶插保鲜液中,以配方5% S+300 mg/L 8-HQC+100 mg/L CA+150 mg/L STS+100 mg/L CoCl2+25 mg/L EDTA-Na保鲜效果最佳,切花瓶插寿命(23.5 d)比CK延长15.2 d,小花开放率(56.1%)比CK提高1.19倍。供试的5组冷藏预处理液中,以10% S+300 mg/L 8-HQC+75 mg/L KH2PO4·3H2O效果最佳,切花经过2~3周8~10℃冷藏后,瓶插寿命(13.7 d)比CK延长7.9 d,小花开放率(43.6%)比CK提高98.2%;该处理组鹤望兰切花的适宜冷藏时间可延长为3周。 相似文献
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GA3预处理对冷藏百合切花花瓣衰老的影响 总被引:14,自引:0,他引:14
本文研究GA3预处理对冷藏10d的百合切花花瓣衰老的影响。结果表明,入库前用200mg/L GA3预处理可以显著提高花瓣含水量,增强保水能力,延缓可溶性蛋白质含量的下降,提高可溶性糖水平和CAT活性,延缓POD活性的升高,减少MDA积累,使切花瓶插寿命延长,观赏品质得到改善。 相似文献
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Agata Jędrzejuk Julia Rochala Marta Dolega Aleksandra Łukaszewska 《Acta Physiologiae Plantarum》2013,35(6):1785-1796
Recently, the programmed cell death (PCD) is studied in the context of the postharvest longevity of cut flowers with the goal of slowing down the processes that ultimately lead to flower death, and to ensure a long display life of cut plant material. In this study, the phenomenon of PCD in petals of common lilac (Syringa vulgaris L.) was observed, aimed to compare degradation of petal cells in flowers blooming under natural conditions with those forced in November. For the early lilac forcing, a deep dormancy has to be broken by high temperatures 35–37 °C negatively affecting postharvest life of cut branches. The trials included as well the observation of the effect of two flower preservatives on the PCD in order to see if the prolongation of the lilac vase life was associated with a delay in the onset of the PCD symptoms. The vase life of cut lilacs was significantly increased by both preservatives. The first symptoms of PCD were evident in the flower bud stage. In petals from forced shrubs, the first symptoms of cell degradation were much more advanced than in lilacs blooming naturally in May. In forced flowers held in the preservatives, the degradative changes in cells occurred later than in those kept in water, but they were accelerated relative to a flower developmental stage. 相似文献
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采用正交试验、单因子试验和植物组织培养方法,探讨几种因子对野葛块根组织脱分化与再分化的影响。结果表明,野葛块根愈伤组织诱导的最佳培养基为MS+NAA 0.5mg/L+6-BA 1.0mg/L+2,4-D 2.0mg/L,暗培养更有利于愈伤组织的诱导;野葛块根愈伤组织的最佳出芽培养基为MS+NAA 0.5mg/L+6-BA 3.0mg/L或MS+NAA 0.5mg/L+KT 2.0mg/L,光照培养更有利于愈伤组织芽的再分化;野葛块根愈伤组织再生芽生根最佳培养基为MS+NAA 0.5mg/L+PP333 3.0mg/L+蔗糖30g/L;PP333 3.0mg/L和蛭石:珍珠岩(2:1)基质能显著提高再生苗的移栽成活率。 相似文献
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采用生态学实验方法, 研究睾丸酮(Testoterone)和雌二醇(Estradiol)单一及组合对卜氏晶囊轮虫生命周期中主要发育阶段历时和种群增长率的影响。结果显示: 睾丸酮(T)的48h LC50为9.56 mg/L, 直线回归方程为Y=1.98X+3.06 (R2=0.92); 雌二醇(E) 48h LC50为8.18 mg/L, 直线回归方程为Y=3.53X+1.78 (R2=0.92)。除0.5 mg/L浓度组外, 睾丸酮和雌二醇均显著缩短轮虫平均寿命、减少后代幼体个数以及降低种群增长率(r)。其中8 mg/L睾丸酮与对照组相比显著延长轮虫生殖前期11.71%、平均寿命缩短52.22%, 后代个数减少82.20%; 8 mg/L雌二醇与对照组相比, 生殖前期显著延长7.10%, 平均寿命缩短49.75%, 后代个数减少83.33%。在2种激素定量组合(8 mg/L)实验中, 与对照组相比, 各实验组的生殖前期显著延长34.17%—48.01%, 平均寿命显著缩短31.56%—42.12%, 后代个数明显减少24.44%—80.33%; 第5天, 处理组T6E2、T4E4、T8E0、T0E8和T2E6的r值比对照组分别降低30.00%、37.14%、41.43%、60.00% 和65.71%。研究结果显示睾丸酮和雌二醇对卜氏晶囊轮虫生长发育及种群增长率有明显影响, 并且卜氏晶囊轮虫对雌二醇表现更为敏感, 2种激素呈现出协同作用。 相似文献
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对野葛茎尖玻璃化法超低温保存技术的研究结果表明,H号野葛茎尖较佳的保存技术体系是:继代生长30 d的野葛无菌苗置于4℃冰箱炼苗5 d;在无菌条件下切取含1~2个叶原基(1.5~2.5 mm)的茎尖,转至含5% DMSO+5%蔗糖的MS培养基内,置于4℃冰箱预培养1 d;用60%、100% PVS2(30%甘油+15%乙二醇+15% DMSO+13.7%蔗糖)分别在0℃下过渡和脱水各30 min,随即迅速投入液氮;保存24 h后,在40℃水浴中快速化冻90 s,用含41.1%蔗糖的MS培养液洗涤2次,每次停留10 min;转至再生培养基(MS+6-BA 2 mg/L+NAA 1 mg/L)暗培养7 d,然后光下培养,再生率可达60%以上。再生苗与常温苗形态指标差异不显著。 相似文献