摘要
为探究植物生长调节剂对蜡梅切枝的催花保鲜作用,以‘素心’蜡梅切枝为试验材料,研究7种不同浓度配比的GA3与6-BA的催花保鲜液对其外观形态和生理特性的影响。结果表明:7种催花保鲜剂均能有效促进蜡梅切枝开花,并延长其瓶插寿命。其中,30 g/L蔗糖+300 mg/L 8-HQ+300 mg/L Al_(2)(SO_(4))_(3)+120 mg/L GA_(3)+120 mg/L 6-BA催花保鲜效果最佳,该处理组的蜡梅切枝瓶插寿命约为10 d,比CK的瓶插寿命延长了近6 d,开花率最高,最大开花直径比CK增加76.64%,催花时间最短。可溶性糖含量随瓶插天数增加呈先上升后下降再上升的趋势,MDA含量变化最小,而超氧化物歧化酶活性呈"U"型变化,过氧化物酶活性升高,有效缓解了可溶性糖的降解,增强了细胞膜的稳定性,改善了花枝内部环境,提高了蜡梅切枝催花的开花品质。
In order to explore the effect of plant growth regulator on the flower promoting and fresh-keeping of cut flowers of Chimonanthus praecox. Seven treatments were set with different concentrations and ratios of gibberellins(GA3) and 6-benzylaminopurine(6-BA). The results showed that all treatments effectively advance the flowering of C. praecox, delay senescence, and extend the viewing period. Among them, the vase life of JS5 treatment(30 g/L sucrose + 300 mg/L 8-hydroxyquinoline + 300 mg/L Al_(2)(SO_(4))_(3) + GA_(3) 120 mg/L + 6-BA 120 mg/L) was the longest about 10 days, which was nearly 6 days longer than that of CK, and the bloomed ratio was the highest. The maximum flowering diameter increased by 76.64% compared with the control, and the flower urging time was the shortest. The soluble sugar in JS5 treatment increased first, then decreased and then increased,malondialdehyde(MDA) content fluctuated with the smallest and most stable amplitude, and the total superoxide dismutase(SOD) activity in the cutting branch showed a trend of decreasing first and then increasing. The JS5 treatment not only effectively alleviates the degradation of soluble sugar, but also enhances the tability of cell membrane and improves the internal environment of flowering branches, to achieve the effect of improving the quality of flowering.
作者
李思瑾
陈龙清
Li Sijin;Chen Longqing(Yunnan Province Functional Flower Resources and Industrialization Technology Engineering Research Center,College of Landscape Architecture and Horticulture,Southwest Forestry University,Kunming Yunnan 650233,China)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2021年第5期42-48,共7页
Journal of Southwest Forestry University：Natural Sciences
基金
云南省高层次人才引进计划高端外国专项(NO.000019)资助。
关键词
蜡梅
切枝
催花
保鲜
植物生长调节剂
Chimonanthus praecox
cut branch
urging blooming
keep fresh
plant growth regulator
作者简介
第1作者:李思瑾(1995-),女,硕士研究生。研究方向:风景园林植物资源及应用。Email:785641469@qq.com;通信作者:陈龙清(1966-),男,博士,教授。研究方向:风景园林植物资源及应用。Email:clqhzau@126.com。
