国立研究開発法人 国際農林水産業研究センター | JIRCAS

Differences in Growth and Photosynthesis Performance of Two Dipterocarp Species Planted in Laguna, the Philippines

JARQ : Japan Agricultural Research Quarterly
ISSN
00213551
書誌レコードID(総合目録DB)
AA0068709X
本文フルテキスト

Plant growth and leaf photosynthesis were studied for saplings of two species in the Dipterocarpaceae family planted on open bare ground in the Philippines. The greatest rate of growth in height in the initial 14 months after planting was for Shorea contorta, followed by Dipterocarpus grandiflorus. The light-saturated photosynthetic rate (Pmax) for S. contorta and D. grandiflorus was 9.9 ± 0.29 μmol m-2s-1 and 5.5 ± 0.28 μmol m-2s-1, respectively. Dark respiration and apparent quantum yield efficiency did not differ between them. The daily course of photosynthesis showed the existence of a midday depression in net photosynthesis for S. contorta and D. grandiflorus on open bare ground. When the leaf-to-air vapor pressure difference (L-AirVPD) was abruptly raised to 30 hPa, the decrease in the rate of photosynthesis was the same for potted saplings of S. contorta and D. grandiflorus in the nursery. One reason for the difference in growth between species is thought to be the difference in carbon gain depending on a difference in Pmax between the species in the morning, before the leaves suffer from large L-AirVPD at midday.

刊行年月2009-01-01
作成者UTSUGI HajimeOKUDA ShiroLUNA Amelita C.GASCON Antonio F.
著者キーワード

leaf-to-air vapor pressure difference

open bare ground planting

photosynthetic rate

tropical rain forest

公開者Japan International Research Center for Agricultural Sciences
データ作成日2009-01-01
国立情報学研究所メタデータ主題語彙集(資源タイプ)Journal Article
43
1
開始ページ45
終了ページ53
DOI10.6090/jarq.43.45
権利Japan International Research Center for Agricultural Sciences
言語eng