关键词: 水稻, 水稻, 高温胁迫, 生长发育, 产量, 品质, 生理机制, 对策

Abstract: The study aims to clarify the photosynthetic characteristics of cut flower Anthurium andraeanum, and provide theoretical basis for its species introduction and cultivation. The experiment tested photosynthesis changes of three varieties of cut flower Anthurium andraeanum ‘( Anthaqxm’,‘Anthaqal’,‘Antharysia’) in plastic greenhouse by analyzing net photosynthetic rate(Pn), transpiration rate(Tr), stomata conductance(Gs), intercellular CO2 concentration(Ci) using CIRAS-2 photosynthesis analyzer system in different seasons. The results showed that the Pn diurnal variation of the three varieties of cut flower Anthurium andraeanu showed a two-peak pattern under sunshine condition of spring, summer and winter. The peak changed according to seasons, was the highest in summer, followed by spring and the lowest in winter. There was an obviously midday depression phenomenon, which was non-stomatal limitation. Tr and Pn had the same trend. Ci was negatively correlated with Pn, increased first and then decreased, and then increased again. The water use efficiency(WUE) of daily variation of the three varieties of cut flower Anthurium andraeanu followed the same trend, increased first and then decreased, and then increased again, was the highest in winter, and the WUE of ‘Anthaqal’was the highest under the same season condition. The main factors which affected photosynthesis of cut flower Anthurium andraeanu were Pn, Gs and Ci. The above research results showed that photosynthetic capacity of cut flower Anthurium andraeanum had seasonal adaptability, photosynthetic capacity of the three varieties was higher in summer, and photosynthetic capacity of‘Anthaqal’was the highest.