CAJ | 학술논문

为探明催花牡丹复壮栽培后植株生长状况，采用Li-6400光合作用分析仪对盆栽的4个常见春节催花牡丹品种催花复壮后的光合特性进行比较研究。结果表明：在春季自然花期，4个牡丹品种净光合速率（ Pn）日变化呈单峰曲线，峰值出现在11：00左右，峰值最高的银红巧对比峰值最低的紫二乔高出44．39％；4个品种引起Pn降低的原因不完全相同，乌龙捧盛和百园红霞Pn降低的主要原因是气孔因素，紫二乔和银红巧对Pn降低则是气孔因素和非气孔因素共同作用的结果；4个品种的光饱和点（ LSP）、光补偿点（ LCP）、表观量子效率（ AQY）品种间差异显著，紫二乔表观量子效率（AQY）为0．0203，显著低于其他3个品种，能更好地利用弱光。
위탐명최화모단복장재배후식주생장상황，채용Li-6400광합작용분석의대분재적4개상견춘절최화모단품충최화복장후적광합특성진행비교연구。결과표명：재춘계자연화기，4개모단품충정광합속솔（ Pn）일변화정단봉곡선，봉치출현재11：00좌우，봉치최고적은홍교대비봉치최저적자이교고출44．39％；4개품충인기Pn강저적원인불완전상동，오룡봉성화백완홍하Pn강저적주요원인시기공인소，자이교화은홍교대Pn강저칙시기공인소화비기공인소공동작용적결과；4개품충적광포화점（ LSP）、광보상점（ LCP）、표관양자효솔（ AQY）품충간차이현저，자이교표관양자효솔（AQY）위0．0203，현저저우기타3개품충，능경호지이용약광。
Photosynthetic characteristics of four rejuvenation-grown tree peony were studied comparatived with the LI-6400 portable photosynthetic analysis system before flower blossom .The result were as follows:Diurnal varia-tion of net photosynthetic rate ( Pn) in leaves of the four cultivars appeared a single-peak curve which occurring at a-bout 11:00,and Paeonia suffruticosa Zierqiao has a lower Pn than Paeonia suffruticosa Yinhongqiaodui ,which Pn was 10.52 μmol/(m2· s).There were different reasons for the decrease of four cultivars ,Pn:the main reason for Paeonia suffruticosa Wulongpengsheng and Paeonia suffruticosa Baiyuanhongxia was stomatal factor ,while a combi-nation of stomatal and non-stomatal factors caused the decrease of Pn in Paeonia suffruticosa Zierqiao and tree peony Paeonia suffruticosa Yinhongqiaodui.There was a significant difference in light saturation point (LSP),light com-pensation point(LCP)and appaent quantum yield(AQY) of the four cultivars.With the highest LSP and LCP,tree peony Zierqiao was 0 .020 3 mol/mol in AQY which was significantly lower than others ,showing a better adaptation to the weak light .