关键词: 小麦, 小麦, 瞬时表达体系, HeliosTM基因枪

Abstract: Based on 3-year measurements of CO2 flux and yield taken in a paddy rice field in the suburb area of Nanchang, diurnal characteristics and temporal trend of daily CO2 flux during the yield formation stage were analyzed to identify the major futures of CO2 flux and to investigate the relationship between CO2 flux and yield. The response of CO2 flux to photosynthetically active radiation and temperature was also studied through regressive analysis. CO2 flux shows “U” shape diurnal patterns during the period of heading and the period from full heading to milky maturity. The diurnal amplitude of CO2 flux is larger during the heading period. The average of day-time CO2 flux demonstrates a “√” shape temporal trend during the yield formation period. Day-time CO2 flux is generally consistent with yield during the period of heading and the period from full heading to milky maturity. Assimilation of CO2 by rice is significantly correlated with photosynthetically active radiation and temperature. The uptake of CO2 by rice is stronger in southern paddy rice field than in Sanjiang plain.