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Traits Related to Chilling-Induced Photoinhibition in Leaves of indica and japonica Rice (Oryza sativa)
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作者 ZHUSu-qin JIBen-hua JIAODe-mao 《Rice science》 SCIE 2004年第4期205-213,共9页
Physiological indices related to PS II photochemical efficiency (Fv/Fm) and membrane lipid peroxidation were measured in leaves of indica rice cv Shanyou 63 and japonica rice 9516 at different temperatures and light i... Physiological indices related to PS II photochemical efficiency (Fv/Fm) and membrane lipid peroxidation were measured in leaves of indica rice cv Shanyou 63 and japonica rice 9516 at different temperatures and light intensities for four days. No obvious changes in Fv/Fm and MDA were observed in both indica and japonica rice at moderate temperature and medium PFD, implying neither photoinhibition nor photooxidation happened in these cases. In indica rice either at medium temperature with higher PFD or at lower temperature with medium PFD Fv/Fm dropped obviously with no changes in MDA contents, and photoinhibition appeared while photooxidation did not occur. However, D1 protein, Fv/Fm, (A+Z)/(A+Z+V), and SOD activities dropped, and O2 - production and MDA content increased accordingly, as well as both photoinhibition and photooxidation appeared in two rice varieties at lower temperature and higher PFD. Experiment with inhibitors at lower temperature and higher PFD showed that as compared with japonica rice the decrements appeared in D1 protein contents, SOD activities, and (A+Z)/(A+Z+V) ratios, the xanthophyll cycle and non-photochemical quench (qN) were inhibited in a more degree, as well as increments of MDA content were greater, thus exhibiting more distinct photoinhibition and photooxidation in indica rice. It is suggested that Fv/Fm and membrane lipid peroxidation product-MDA were the key indices to predict and diagnose photooxidation. 展开更多
关键词 D1 protein photochemical efficiency membrane lipid peroxidation xanthophyll cycle RICE
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M8-An effective medium for anther culture of indica rice
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作者 MEIChuansheng ZHANGJinyu WuGuangnan 《Chinese Rice Research Newsletter》 1992年第3期6-6,共1页
A new dedifferentiation medium (MS) was developed, which greatly improved the efficiency of anther culture of indica rive. The percentage of green plantlets for anthers inoculated on M8 medium was 40% higher than that... A new dedifferentiation medium (MS) was developed, which greatly improved the efficiency of anther culture of indica rive. The percentage of green plantlets for anthers inoculated on M8 medium was 40% higher than that on N6 medium in 6 cultivars and it was 2.6%, on average, on M8 medium in more than 20 cultivars and lines, 展开更多
关键词 水稻 花粉囊 退行性变化 培养基
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