CHEN Chunye,WANG Yunan,HE Shuilian,et al.Effects of Strigolactones on Lateral Branch Growth of Edible Rose Under Phosphorus Deficiency[J].Northern Horticulture,2026,(11):61-68.[doi:10.11937/bfyy.20254408]
缺磷条件下独脚金内酯对食用玫瑰侧枝生长的影响
- Title:
- Effects of Strigolactones on Lateral Branch Growth of Edible Rose Under Phosphorus Deficiency
- 文章编号:
- 1001-0009(2026)11-0061-08
- Keywords:
- edible rose; strigolactones; phosphorus; lateral shoot
- 分类号:
- S682.31
- 文献标志码:
- A
- 摘要:
- 以食用玫瑰‘滇红’(Rosa chinensis ‘Dianhong’) 扦插苗为试材，采用不同浓度独脚金内酯（SLs）合成抑制剂Tis108处理及缺磷条件下喷施SLs人工合成物GR24的方法，研究了磷营养和SLs对食用玫瑰‘滇红’侧枝生长发育的影响，并测定相应的形态和生理指标，以期明确磷营养与SLs在调控侧枝生长中的作用机制，为食用玫瑰株型优化提供参考依据。结果表明：去顶处理能显著促进‘滇红’第1腋芽生长，去顶后喷施Tis108可进一步促进第1腋芽生长；处理后2~14 d，0.05 μmol·L-1 Tis108处理第1腋芽长度显著大于其他处理；喷施5.0 μmol·L-1 Tis108处理第1腋芽长度在2~8 d显著小于0.1、1.0 μmol·L-1 Tis108处理，10~14 d差异不显著。正常供磷条件下第1腋芽生长最快、长度最大，显著优于缺磷处理；缺磷条件下喷施5.0 μmol·L-1 GR24对第1腋芽生长的抑制作用最强，喷施0.05 μmol·L-1 Tis108则能缓解缺磷抑制，其腋芽长度介于正常磷与缺磷处理之间。生理指标方面，正常磷处理叶绿素相对含量略高于缺磷处理但差异不显著；缺磷下喷施GR24的处理叶绿素相对含量最高。各处理叶面积均随时间增加，缺磷处理叶面积最小，缺磷下喷施GR24的处理叶面积最大；叶面积增幅与根系活力在各处理间无显著差异。综上，0.05 μmol·L-1 Tis108对‘滇红’第1腋芽生长的促进效果最佳；缺磷抑制第1腋芽生长，外源喷施SLs会加剧该抑制，而Tis108可缓解缺磷的不利影响。
- Abstract:
- Taking the cuttings of the edible rose (Rosa chinensis‘Dianhong’) as the experimental material,different concentrations of strigolactone (SLs) synthesis inhibitors Tis108 were applied for treatment,and the artificial synthetic substance GR24 of SLs was sprayed under phosphorus deficiency conditions.The effects of phosphorus nutrition and SLs on the growth and development of the lateral branches of ‘Dianhong’ edible rose were studied,and corresponding morphological and physiological indicators were measured,in order to clarify the mechanism of phosphorus nutrition and SLs in regulating the growth of lateral branches and to provide a reference for optimizing the plant type of edible rose.The results showed that top remond top removal followed by spraying Tis108 could further promote the growth of the first lateral bud;from 2 to 14 days after treatment,the length of the first laval treatment could significantly promote the growth of the first lateral bud of ‘Dianhong’,ateral bud in the 0.05 μmol·L-1 Tis108 treatment was significantly greater than that in other treatments;spraying 5.0 μmol·L-1 Tis108 treatment had a significantly shorter length of the first lateral bud than 0.1 and 1.0 μmol·L-1 Tis108 treatments in 2 to 8 days,and the difference was not significant in 10 to 14 days.Under normal phosphorus supply conditions,the first lateral bud grew the fastest and had the longest length,which was significantly better than the phosphorus deficiency treatment;spraying 5.0 μmol·L-1 GR24 under phosphorus deficiency had the strongest inhibitory effect on the growth of the first lateral bud,and spraying 0.05 μmol·L-1 Tis108 could alleviate the inhibitory effect of phosphorus deficiency,and its lateral bud length was between the normal phosphorus and phosphorus deficiency treatments.In terms of physiological indicators,the relative content of chlorophyll in the normal phosphorus treatment was slightly higher than that in the phosphorus deficiency treatment but the difference was not significant;the relative content of chlorophyll in the treatment sprayed with GR24 under phosphorus deficiency was the highest.The leaf area of each treatment increased with time,and the leaf area of the phosphorus deficiency treatment was the smallest,while the leaf area of the treatment sprayed with GR24 under phosphorus deficiency was the largest;the increase in leaf area and root vitality showed no significant difference among the treatments.In summary,0.05 μmol·L-1 Tis108 had the best promoting effect on the growth of the first lateral bud of ‘Dianhong’;phosphorus deficiency inhibited the growth of the first lateral bud,and exogenous spraying of SLs would exacerbate this inhibition,while Tis108 could alleviate the adverse effects of phosphorus deficiency.
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备注/Memo
第一作者简介：陈春夜(2000-),女，硕士研究生，研究方向为园林植物资源收集与评价。E-mail:2967261457@qq.com.责任作者：孟静（1981-),女,博士,副教授,现主要从事园林植物资源收集、评价与创新等研究工作。E-mail:mengjing2514@163.com.基金项目：云南省农业联合专项面上资助项目(202301BD070001-032)。收稿日期：2025-12-23