萘乙酸对观赏葫芦幼苗生长及生理特性的影响  

The Effect of Naphthylacetic Acid on the Growth and Physiological Characteristics of Ornamental Gourd Seedlings

作　　者：李亚楠 赵燕[1] LI Ya-nan;ZHAO Yan(College of Agronomy and Agricultural Engineering,Liaocheng University,Liaocheng Shandong 252000)

机构地区：[1]聊城大学农学与农业工程学院,山东聊城252000

出　　处：《安徽农业科学》2025年第6期29-32,共4页Journal of Anhui Agricultural Sciences

基　　金：聊城市重点研发计划项目(2022YDNY05);聊城大学风景园林学科建设基金(319462212)。

摘　　要：以“中号亚腰”观赏葫芦为试验材料,设置4个浓度梯度(1、10、50、100 mg/L)萘乙酸(NAA)对2~3片真叶的观赏葫芦幼苗进行根系浸泡处理5 min,蒸馏水处理为对照(CK),研究不同浓度外源生长素NAA对观赏葫芦幼苗生长及生理特性的影响。结果表明,10 mg/L NAA溶液处理对根系和叶面积促进效果最好;50 mg/L NAA溶液处理对幼苗茎粗和株高促进作用最强,且过氧化物酶(POD)和过氧化氢酶(CAT)活性最高,与CK有显著差异;同时该处理浓度也能显著增加观赏葫芦幼苗叶片的叶绿素含量;各处理丙二醛(MDA)含量与CK差异均不显著。综上,根系浸泡观赏葫芦幼苗最适NAA浓度为10~50 mg/L,处理浓度为100 mg/L时抑制观赏葫芦幼苗的生长。The ornamental gourd were treated with naphthalene acetic acid(NAA)at four concentrations(1,10,50 and 100 mg/L)for 5 min and distilled water for the control group(CK).The effects of exogenous growth hormone NAA at different concentrations on the growth and physiological characteristics of ornamental gourd seedlings were investigated.The results showed that 10 mg/L NAA solution had the best effect on root and leaf area growth;50 mg/L NAA solution had the strongest effect on stem thickness and plant height,and the highest peroxidase(POD)and catalase(CAT)activities,which were significantly different from those of CK group;the treatment concentration also significantly increased the chlorophyll content of leaves of ornamental cucurbits.The difference of malondialdehyde(MDA)content in each treatment group was not significant compared with the CK group.In conclusion,the optimum NAA concentration for root soaking of ornamental gourd seedlings ranged from 10 to 50 mg/L,and the growth of ornamental gourd seedlings was inhibited at a treatment concentration of 100 mg/L.

关 键 词：观赏葫芦 萘乙酸(NAA) 生长指标 生理指标 

分 类 号：S68[农业科学—观赏园艺]