Responses of Acacia Mangium Seedlings to Different Irradiances |
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| Authors: | Yu Hua Ong Bee-Lian |
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| Institution: | (1) Department of Biological Sciences, National University of Singapore, Lower Kent Ridge Road, Singapore, 119260, Republic of Singapore |
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| Abstract: | The photosynthetic and growth responses of A. mangium to different photosynthetic photon flux density (PPFD) during early seedling establishment (36 d after sowing) were investigated. Shade-grown A. mangium seedlings exhibited lower chlorophyll (Chl) a/b ratio, higher Chl and carotenoid (Car) contents, and higher total Chl/Car ratio than sun-grown seedlings. Sun-grown seedlings showed significantly higher photosynthetic capacity and total plant dry mass. High PPFD was crucial for the successful early establishment and robust growth of A. mangium seedlings. |
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| Keywords: | gas exchange growth photosynthesis sun/shade |
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