ZHANG Qing,WANG Ruyi,LI Jiaqiu,et al.Effects of Prohexadione Calcium on Growth,Physiology and Biochemistry of Trollius chinensis Seedlings[J].Northern Horticulture,2023,(09):104-111.[doi:10.11937/bfyy.20223351]
调环酸钙对金莲花幼苗生长及生理生化的影响
- Title:
- Effects of Prohexadione Calcium on Growth,Physiology and Biochemistry of Trollius chinensis Seedlings
- Keywords:
- Trollius chinensis seedlings; prohexadione calcium; physiological and biochemical; chlorophyll fluorescence parameter
- 文献标志码:
- A
- 摘要:
- 以金莲花幼苗为试材,采用叶面喷施法,分析了不同浓度调环酸钙(Pro-Ca)处理对金莲花幼苗生长发育、生理生化特性、光合作用及叶绿素荧光参数等的影响,探明其对金莲花的调控机理,以期为金莲花矮化栽培提供参考依据。结果表明:叶面喷施调环酸钙后金莲花幼苗明显矮化,其中以300 mg?L-1调环酸钙矮化效果最好,40 d时金莲花幼苗株高、叶长、叶宽分别比对照减小了30.71%、31.28%、31.58%,均与CK有显著差异(P<0.05);且显著提高了金莲花叶片的抗氧化酶活性,改善了Fv/Fm及Fv/Fo等叶绿素荧光参数,从而提高了光合速率,促进幼苗健壮生长,可作为矮化金莲花喷施的最佳浓度。
- Abstract:
- Taking T.chinensis seedlings as test materials,the effects of different concentrations of prohexadione calcium (Pro-Ca) on the growth,physiological and biochemical characteristics,photosynthesis and chlorophyll fluorescence of T.chinensis seedlings were studied by foliar spraying,in order to explore the dwarfing regulation technology and mechanism of Trollius chinensis.The results showed that T.chinensis seedlings were dwarfed obviously after spraying prohexadione calcium on the leaves,and 300 mg?L-1 prohexadione calcium had the best dwarfed effect.At 40 days,the plant height,leaf length and leaf width were reduced by 30.71%,31.28% and 31.58%,respectively,which were significantly different from those of CK (P<0.05).Moreover,the antioxidant enzyme activity of the leaves of T.chinensis were significantly increased,and the chlorophyll fluorescence parameters such as Fv/Fm and Fv/Fo were improved,which increased the photosynthetic rate and promoted the strong growth of the seedlings.Therefore,it could be used as the optimal spraying concentration for dwarf control of T.chinensis.
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备注/Memo
第一作者简介:张庆(1997-),男,硕士研究生,研究方向为园林植物栽培。E-mail:1850383933@qq.com.责任作者:张芹(1972-),女,博士,教授,现主要从事园林植物资源及种质创新等研究工作。E-mail:zqin166@163.com.基金项目:河北省重点研发计划资助项目(19227514D)。收稿日期:2022-12-08