Physiological characteristics of adaptability for two ground-cover chrysanthemum cultivars with shading

LEI Yan; LI Qingwei; LI Wenguang; JING Shan; CHEN Junyu

doi:10.11833/j.issn.2095-0756.2015.05.008

Volume 32 Issue 5

Sep. 2015

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LEI Yan, LI Qingwei, LI Wenguang, JING Shan, CHEN Junyu. Physiological characteristics of adaptability for two ground-cover chrysanthemum cultivars with shading[J]. Journal of Zhejiang A&F University, 2015, 32(5): 708-715. doi: 10.11833/j.issn.2095-0756.2015.05.008

Citation:

LEI Yan, LI Qingwei, LI Wenguang, JING Shan, CHEN Junyu. Physiological characteristics of adaptability for two ground-cover chrysanthemum cultivars with shading[J]. Journal of Zhejiang A&F University, 2015, 32(5): 708-715. doi: 10.11833/j.issn.2095-0756.2015.05.008

Physiological characteristics of adaptability for two ground-cover chrysanthemum cultivars with shading

doi: 10.11833/j.issn.2095-0756.2015.05.008

LEI Yan^1,2,3,4,
LI Qingwei^{1,2,3,4
,
,},
LI Wenguang⁵,
JING Shan^1,2,3,4,
CHEN Junyu^1,2,3,4

1.
Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry Univtrsity, Beijing 100083, China;
2.
National Engineering Research Center for Floriculture, Beijing Forestry Univtrsity, Beijing, 100083 China;
3.
Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry Univtrsity, Beijing 100083, China;
4.
School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China;
5.
Daqing City Administrative Bureau, Daqing 163311, Heilongjiang, China

Funds:

国家林业局资助项目（2015-LY-231）

Received Date: 2014-12-02
Rev Recd Date: 2015-03-06
Publish Date: 2015-10-20

Abstract

To determine the physiological adaption of two shade-tolerant, ground-cover Chrysanthemum grandiflorum cultivars, a greenhouse experiment was conducted with four shading treatments （transmittance of 25%, 50%, 85%, and 100%） with C. grandiflorumJinbuhuan and C. grandiflorumMeihong. Light response curve for each plant were measured by LI-6400. For each treatment, three leaves （i.e. three replicates） were selected and alternatively. Results showed that with increased shading, the plant height, leaf area, flower diameter, internode length, and total chlorophyll content （chlorophyll a + b） of the C. grandiflorum cultivars increased significantly （P＜0.05）; whereas, crown width, stem diameter, specific leaf weight （SLW）, ratio of chlorophyll a to chlorophyll b （chlorophyll a/b）, number of flowers, and number of branches decreased （P＜0.05）. Photosynthetic light compensation point （LCP）, photosynthetic light saturation point （LSP）, and dark respiration rate （Rd） also decreased （P＜0.05）as physiological adaptability to light decreased. Moderate shading （85% transmittance） improved photosynthetic capacity and reduced photo inhibition; even with 25% transmittance, normal flowering occurred. However, physiological adaption of cultivars varied according to the range of ecological adaptation to light intensity with C. grandiflorumJinbuhuan being broader than C. grandiflorumMeihong. ［Ch, 2 fig. 6 tab. 24 ref.］
- horticulture,
- Chrysanthemum grandiflorum,
- shading treatments,
- photosynthetic characteristics,
- chlorophyll,
- specific leaf weight,
- ornamental characteristics

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Physiological characteristics of adaptability for two ground-cover chrysanthemum cultivars with shading

1. Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry Univtrsity, Beijing 100083, China;

2. National Engineering Research Center for Floriculture, Beijing Forestry Univtrsity, Beijing, 100083 China;

3. Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry Univtrsity, Beijing 100083, China;

4. School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China;

5. Daqing City Administrative Bureau, Daqing 163311, Heilongjiang, China

Funds:

国家林业局资助项目（2015-LY-231）

Received Date: 2014-12-02

Rev Recd Date: 2015-03-06

Publish Date: 2015-10-20

Key words:

Abstract: To determine the physiological adaption of two shade-tolerant, ground-cover Chrysanthemum grandiflorum cultivars, a greenhouse experiment was conducted with four shading treatments （transmittance of 25%, 50%, 85%, and 100%） with C. grandiflorumJinbuhuan and C. grandiflorumMeihong. Light response curve for each plant were measured by LI-6400. For each treatment, three leaves （i.e. three replicates） were selected and alternatively. Results showed that with increased shading, the plant height, leaf area, flower diameter, internode length, and total chlorophyll content （chlorophyll a + b） of the C. grandiflorum cultivars increased significantly （P＜0.05）; whereas, crown width, stem diameter, specific leaf weight （SLW）, ratio of chlorophyll a to chlorophyll b （chlorophyll a/b）, number of flowers, and number of branches decreased （P＜0.05）. Photosynthetic light compensation point （LCP）, photosynthetic light saturation point （LSP）, and dark respiration rate （Rd） also decreased （P＜0.05）as physiological adaptability to light decreased. Moderate shading （85% transmittance） improved photosynthetic capacity and reduced photo inhibition; even with 25% transmittance, normal flowering occurred. However, physiological adaption of cultivars varied according to the range of ecological adaptation to light intensity with C. grandiflorumJinbuhuan being broader than C. grandiflorumMeihong. ［Ch, 2 fig. 6 tab. 24 ref.］

Physiological characteristics of adaptability for two ground-cover chrysanthemum cultivars with shading

doi: 10.11833/j.issn.2095-0756.2015.05.008

Abstract

References

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通讯作者: 陈斌, bchen63@163.com

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