Photosynthetica 2001, 39(3):477-479 | DOI: 10.1023/A:1015159100276

Responses of Acacia Mangium Seedlings to Different Irradiances

Hua Yu1, Bee-Lian Ong1
1 Department of Biological Sciences, National University of Singapore, Singapore, Republic of Singapore

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.

Additional key words: gas exchange; growth; photosynthesis; sun, shade

Published: September 1, 2001  Show citation

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Yu, H., & Ong, B. (2001). Responses of Acacia Mangium Seedlings to Different Irradiances. Photosynthetica, 39(3), 477-479. doi: 10.1023/A:1015159100276
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