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HUAN Juan;XIA Hanping;CAI Xi’an
Institute of Ecology, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
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Abstract: Three grasses of the genus Stenotaphrum, S. helferi, S.secundatum and S. secundatum cv. varietgatum are all shade-resistant species. The photosynthetic characteristics of the three species showed that their photosynthesis had no light inhibition under strong radiation at noon, and all presented a single apex in the diurnal variation of net photosynthetic rate. Except S. secundatum cv. varietgatum, S. helferi and S. secundatum had a higher net photosynthesis rate in 75% shading than under full light. Field observations showed that S. secundatum cv. varietgatum andS. secundatum kept their growth in the vegetative stage all the year around, while S. helferi completed its lifecycle including vegetative growth, earring, flowering and seeding within 3 months. Among the three species, S. secundatum grew best under full sunshine, whereas S. helferi grew best in the shading situation. All tested species still kept pretty good growth situation under 75% shading, and maintained evergreen in the whole year. On the whole, all the three species assumed shade-tolerant ability; among them, S. helferi had the strong shade-tolerant ability, which grew rapidly under the condition of shading, and its leaves revealed emerald color. Thereby, it was a very ideal sciophilous turfgrass.S. secundatum cv. varietgatum grew slowest but had yellow strips on its leaves and, therefore, presented beautiful scenery at any time.
Key words: Stands, Characteristics of forest crown, Interception capacity
HUAN Juan;XIA Hanping;CAI Xi’an . Effects of shading on growth and photosynthesis of three species of the genus Stenotaphrum[J]. cje.
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URL: https://www.cje.net.cn/EN/abstract/abstract15644.shtml
https://www.cje.net.cn/EN/Y2006/V25/I07/759