Effects of shade and competition of Chenopodium album on photosynthesis, fluorescence and growth characteristics of Flaveria bidentis

It is necessary to elucidate its growth mechanism in order to prevent and control the further spread of Flaveria bidentis, an invasive plant in China. The effects of shading (shading rate of 0, 50% and 80%, respectively) and planting pattern (single cropping of F. bidentis, single cropping of Chenop...

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Published inYing yong sheng tai xue bao Vol. 25; no. 9; p. 2536
Main Authors Yang, Qing, Li, Jing-Shi, Guo, Ai-Ying, Qi, Yan-Ling, Li, Yan-Sheng, Zhang, Feng-Juan
Format Journal Article
LanguageChinese
Published China 01.09.2014
Subjects
Biomass
Chenopodium album - growth & development
China
Flaveria - physiology
Fluorescence
Introduced Species
Light
Photosynthesis
Plant Leaves
China
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Summary:It is necessary to elucidate its growth mechanism in order to prevent and control the further spread of Flaveria bidentis, an invasive plant in China. The effects of shading (shading rate of 0, 50% and 80%, respectively) and planting pattern (single cropping of F. bidentis, single cropping of Chenopodium album and their intercropping) on germination rate, fluorescence characteristics and growth characteristics of the two plants were investigated. The results showed that moderate shading contributed to emergence rate, but emergence rate of F. bidentis was not uniform, which was one of important factors as a stronger invader. With the increasing light intensity, net photosynthetic rate (Pn), photochemical quenching (qP), electron transport rate of PS II (ETR), quantum yield of PS II (Y), non-photochemical quenching (qN), water use efficiency (WUE), shoot bio-mass rate (SMR), crown width (CW) and dry biomass (DM) increased, specific leaf area (SLA) decreased, LMR of F. bidentis significantly increased, LMR of C.
ISSN:1001-9332