Photosynthetic characteristics and dry matter accumulation of hybrid rice varieties under different light conditions

The study on the photosynthetic characteristics and dry matter accumulation of twelve hybrid rice varieties in the eco-environments with low- and high light intensity showed that the adaptation abiility of the varieties to eco-environment was mainly (depended on the varieties themselves, and there e...

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Published inYing yong sheng tai xue bao Vol. 19; no. 3; p. 505
Main Authors Tong, Ping, Yang, Shi-Min, Ma, Jun, Wu, He-Zhou, Fu, Tai-Lu, Li, Min, Wang, Ming-Tian
Format Journal Article
LanguageChinese
Published China 01.03.2008
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Summary:The study on the photosynthetic characteristics and dry matter accumulation of twelve hybrid rice varieties in the eco-environments with low- and high light intensity showed that the adaptation abiility of the varieties to eco-environment was mainly (depended on the varieties themselves, and there existed greater (differenees among them. The differences in net photosynthetic rate (Pn) and chlorophyll content (Chl) were more significant among the varieties than between the eco-environments. The grain yield had significant positive correlations with Pn and total dry matter mass (TDM), the determination coefficient R2 being 0.584 and 0.590, respectively, but no significant correlations with the export percentage of the matter in stem-sheath (EPMSS) and the transformation percentage of the matter in stem-sheath (TPMSS). In the eco-environment with high light intensity, the leaf thickness and dry matter accumulation increased, while the EPMSS and TPMSS decreased. Under enough sunlight condition, the high proportio
ISSN:1001-9332