光质、光照时间和振荡对'紫叶'酢浆草叶感夜性运动的影响
Effects of Light Quality,Light Duration and Rotation on Nocturnal Movement of Oxalis triangularis'Purpurea'
拓万里 1游乐 1冯乐 1翟俊文 1吴沙沙1
作者信息
- 1. 福建农林大学风景园林与艺术学院,福州 350002
- 折叠
摘要
为探究光质、光照时间和振荡对'紫叶'酢浆草(Oxalis triangularis'Purpurea')叶片感夜性运动的影响,在人工气候室中调控光质、光照时间,利用振荡器进行振荡处理,并用摄像机记录叶片的运动状态.结果表明,波长越长,叶片展开越快;波长越短,叶片闭合越慢.持续 3 d光照,除红光下叶片仅在 18:00 时有开闭的变化外,其他 5 种光质下叶片均不会闭合;12 h/12 h(光照/黑暗)光周期持续3 d,早上叶片展开需45～61 min,夜晚叶片完全闭合需85～120 min,且除白光外的5 种光质下,叶片在早上 8:00 光照前已展开;持续黑暗叶片仍可以每天展开 3～5 h.振荡可以改变夜间运动方式,300 r/min振荡0.5～6 h,叶片在振荡时不会完全闭合,只闭合至60°左右;振荡时间越长,停止振荡后叶片闭合速率越快,但振荡2 h后停止振荡,叶片则不闭合,所以植物对于外界应力的适应能力存在一定的范围.在园林中应用'紫叶'酢浆草时,可以利用短波长光照,延长叶片的展开时间,增加其观赏效果,以及在中午时段避免暴晒.
Abstract
The leaves of Oxalis triangularis'Purpurea'have significant nocturnal movement,which is characterized by a circadian rhythm of opening and closing.The effects of light quality,duration,and vibration on nocturnal movement of Oxalis were investigated in a climate chamber with controlled light and a time-laps camera.The results showed that light wavelength was a critical factor for the nocturnal movement pattern of Oxalis.The longer the wavelength,the faster the leaf unfolds,the shorter the wavelength,the slower the leaf closure.Under continuous light for 3 days,the leaves did not close,except that the leaves opened and closed only at 18:00 under red light.When 12 h/12 h(light/dark)photoperiod lasted for 3 days,it took 45-61 min for the leaves to unfold in the morning and 85-120 min to close completely at night.The leaves had unfolded before 8:00 AM except white light.The leaves could still unfold for 3-5 h every day under continuous dark.Horizonal rotation could change the nocturnal movement pattern of Oxalis.When the leaves were rotated at 300 r/min for 0.5-6 h,it will not close completely during rotation,only close to about 60°.The longer the rotating time,the faster the rate of leaf closure after stopping rotation.When rotation stopped after 2 h,the leaves would not close,so there was a certain range of adaptability to external stress of Oxalis.Therefore,when applying O.triangularis'Purpurea'in the garden,short-wavelength illumination could be used to extend the unfolding time of leaves,increase its ornamental effect,and avoid exposure to the sun at noon.
关键词
'紫叶'酢浆草/感夜性运动/光质/光照/振荡Key words
Oxalis triangularis'Purpurea'/Nyctinastic/Light quality/Illumination/Oscillation引用本文复制引用
基金项目
福建农林大学乡村振兴服务团队项目(2021)(11899170151)
福建农林大学园林学院花卉产业专家指导服务团队项目(11891008001)
出版年
2024
国家科技期刊平台
NSTL
万方数据