CAJ | 학술논문

在自然条件下使用LI-6400光合仪，分别在夏季和冬季，对深圳地区引进的4个桂花品种（‘日香桂’、‘小叶佛顶珠’、‘晚银桂’、‘万点金’）的净光合速率（Pn）、蒸腾速率（Tr）、气孔导度（Cond）、光合有效辐射（PAR）、大气温度（Ta）等生理生态因子的日变化进行了测定，并对桂花Pn与各种因子的关系进行了比较分析，结果表明：在夏季，4个桂花品种Pn日变化均呈现不对称的双峰曲线，有明显的光合“午休”现象．在冬季，4个桂花品种Pn日变化均呈现单峰曲线，不存在“午休”现象．胞间CO2浓度（Ci）、Cond、PAR、Ta和叶片水压亏缺（VPD）是影响桂花Pn较大的几个因子，其中Ci和Ta在夏季的影响程度尤为突出，PAR在冬季的影响程度最为明显．
재자연조건하사용LI-6400광합의，분별재하계화동계，대심수지구인진적4개계화품충（‘일향계’、‘소협불정주’、‘만은계’、‘만점금’）적정광합속솔（Pn）、증등속솔（Tr）、기공도도（Cond）、광합유효복사（PAR）、대기온도（Ta）등생리생태인자적일변화진행료측정，병대계화Pn여각충인자적관계진행료비교분석，결과표명：재하계，4개계화품충Pn일변화균정현불대칭적쌍봉곡선，유명현적광합“오휴”현상．재동계，4개계화품충Pn일변화균정현단봉곡선，불존재“오휴”현상．포간CO2농도（Ci）、Cond、PAR、Ta화협편수압우결（VPD）시영향계화Pn교대적궤개인자，기중Ci화Ta재하계적영향정도우위돌출，PAR재동계적영향정도최위명현．
To ‘ Wan Yingui＇ four cultivars of Osmanthus fragrans （ O. fragrans ‘ Rixianggui＇ , ‘ Xiaoye Fodingzhu＇ , ‘Wandian Jin＇） introduced in Shenzhen, Pn, Tr, Cond, PAR, Ta and other physiological and ecological factors were measured during summer and winter using the LI-6400 in natural conditions, and photosynthesis and the relationship between factors were analyzed. The results showed that： four cuhivars of O. fragrans showed a diurnal variation of net photosynthetic rate of asymmetric double- peak curve, with a clear photosynthetic ＂lunch break＂ phenomenon in summer. In winter, the diurnal change showed a single peak curve. Ci, Cond, PAR, Ta and VPD are the most important factors to affect the net photosynthetic rate. Ci and Ta have the greatest influence in the summer, and PAR effect is particularly prominent in the winter.