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Photosynthetic performance and growth responses of Liriope muscari (Decne.) L.H. Bailey (Asparagaceae) planted within poplar forests having different canopy densities.
BMC Ecology Pub Date : 2020-04-30 , DOI: 10.1186/s12898-020-00294-7
J J Zhang 1, 2 , L Zhu 1, 2 , X Zhang 1, 2 , J Zhou 1, 2
Affiliation  

BACKGROUND Liriope muscari (Decne.) L.H. Bailey is a valuable horticultural and medicinal plant that grows under a range of light intensities, from high to low, in the understories of shrubs. To understand how this species adapts to these various environments, we selected two groups of lilyturf growing under poplar trees at two different spacings. Each group was divided into three types, open field, forest edge and shaded forest with high, medium and low irradiance levels, respectively, and then we examined their photosynthetic characteristics, physiology and biomasses. RESULTS Light saturation point, light compensation point and in situ net photosynthetic rate (PN) were highest in lilyturf growing under high light. In contrast, lilyturf growing under low light had a higher apparent quantum yield and Chl a and b contents, indicating that they adapted to low light. Although the leaves of lilyturf growing under low light were small, their root tubers were heavier. CONCLUSIONS The research demonstrates the eco-physiological basis of lilyturf's shade adaptation mechanism as indicated by photosynthetic activity, chlorophyll fluorescence, Chl a, Chl b and Car contents when grown under different irradiances. We believe that lilyturf is a shade-tolerant plant suitable for planting in undergrowth, but attention should be paid to the canopy density of the forest when interplanting. The findings presented here advance our understanding of the photosynthetic characteristics of understory plants and may assist in the optimization of irradiances in the future.

中文翻译:

种植在具有不同冠层密度的杨树林中的麝香百合(Decrio。)LH Bailey(天冬科)的光合性能和生长响应。

背景技术百里香(Liriope muscari)(12月)LH Bailey是有价值的园艺和药用植物,其在灌木的下层中在从高到低的一系列光照强度下生长。为了了解该物种如何适应这些不同的环境,我们选择了两组在杨树下以两种不同间距生长的百合草。将每组分别分为高,中,低辐照度水平的三种类型:开阔地,森林边缘和遮荫森林,然后研究它们的光合特性,生理学和生物量。结果在强光下生长的草皮中,光饱和点,光补偿点和原位净光合速率(PN)最高。相比之下,在弱光下生长的百合草具有更高的表观量子产率以及Chla和b的含量,表示他们适应弱光。尽管在弱光下生长的百合草的叶子很小,但它们的块根较重。结论该研究证明了Lilyturf的阴影适应机制的生态生理基础,其表现为在不同辐照度下生长的光合作用,叶绿素荧光,Cla,Clb和Car含量。我们认为lilyturf是一种耐荫植物,适合在灌木丛中种植,但在套种时应注意森林的冠层密度。此处提出的发现使我们对林下植物的光合特性有了更深入的了解,并可能有助于将来优化辐照度。他们的块茎较重。结论该研究证明了Lilyturf的阴影适应机制的生态生理基础,其表现为在不同辐照度下生长的光合作用,叶绿素荧光,Cla,Clb和Car含量。我们认为lilyturf是一种耐荫植物,适合在灌木丛中种植,但在套种时应注意森林的冠层密度。此处提出的发现使我们对林下植物的光合特性有了更深入的了解,并可能有助于将来优化辐照度。他们的块茎较重。结论该研究证明了Lilyturf的阴影适应机制的生态生理基础,其表现为在不同辐照度下生长的光合作用,叶绿素荧光,Cla,Clb和Car含量。我们认为lilyturf是一种耐荫植物,适合在灌木丛中种植,但在套种时应注意森林的冠层密度。此处提出的发现使我们对林下植物的光合特性有了更深入的了解,并可能有助于将来优化辐照度。在不同辐照度下生长时,Chl b和汽车内含物。我们认为lilyturf是一种耐荫植物,适合在灌木丛中种植,但在套种时应注意森林的冠层密度。此处提出的发现使我们对林下植物的光合特性有了更深入的了解,并可能有助于将来优化辐照度。在不同辐照度下生长时,Chl b和汽车内含物。我们认为lilyturf是一种耐荫植物,适合在灌木丛中种植,但在套种时应注意森林的冠层密度。此处提出的发现使我们对林下植物的光合特性有了更深入的了解,并可能在将来优化辐照度。
更新日期:2020-04-30
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