CAJ | 학술논문

以温室大棚中栽培的普通小麦'中国春'(对照)及八倍体小偃麦'小偃7430'(染色体组为ABDE_1)、'小偃693'(染色体组为ABDF_1)为材料,采用TPS-1光合作用测定系统及FMS-2荧光仪测定了开花期旗叶和叶鞘的净光合速率、气孔导度和叶绿素荧光参数的日变化,以揭示普通小麦与八倍体小偃麦旗叶及其叶鞘的光合作用差异.结果表明:八倍体小偃麦与普通小麦'中国春'的旗叶和叶鞘光合作用均有午休现象,净光合速率于上午11:00左右出现高峰,午间下降,下午又呈现上升趋势,且'小偃693'叶片在上午时上升较快;气孔导度和荧光参数F_v/F_m、Fv/F_o、 Φ_(PS)Ⅱ、ETR的变化趋势与净光合速率相似,而NPQ的变化趋势则相反.各光合作用和叶绿素荧光参数在材料间表现为八倍体小偃麦高于普通小麦'中国春',器官间表现为旗叶高于相应叶鞘,而'小偃693'的叶鞘和'中国春'叶片的相似.研究发现,八倍体小偃麦旗叶和叶鞘的光合效率优于普通小麦'中国春';'小偃693'的光合效率因其较高的光反应活性表现得尤为突出,其叶鞘的光合能力也不容忽视.
이온실대붕중재배적보통소맥'중국춘'(대조)급팔배체소언맥'소언7430'(염색체조위ABDE_1)、'소언693'(염색체조위ABDF_1)위재료,채용TPS-1광합작용측정계통급FMS-2형광의측정료개화기기협화협초적정광합속솔、기공도도화협록소형광삼수적일변화,이게시보통소맥여팔배체소언맥기협급기협초적광합작용차이.결과표명:팔배체소언맥여보통소맥'중국춘'적기협화협초광합작용균유오휴현상,정광합속솔우상오11:00좌우출현고봉,오간하강,하오우정현상승추세,차'소언693'협편재상오시상승교쾌;기공도도화형광삼수F_v/F_m、Fv/F_o、 Φ_(PS)Ⅱ、ETR적변화추세여정광합속솔상사,이NPQ적변화추세칙상반.각광합작용화협록소형광삼수재재료간표현위팔배체소언맥고우보통소맥'중국춘',기관간표현위기협고우상응협초,이'소언693'적협초화'중국춘'협편적상사.연구발현,팔배체소언맥기협화협초적광합효솔우우보통소맥'중국춘';'소언693'적광합효솔인기교고적광반응활성표현득우위돌출,기협초적광합능력야불용홀시.
Octoploid Tritielytrigia types ('Xiaoyan 7430' and 'Xiaoyan 693') and Triticum aestivum (Chinese spring) were planted in greenhouse to study the diurnal variation characteristics of photosynthesis of flag leaf and sheath in anthesis using TPS-1 photosynthesis system and FMS-2 chlorophyll fluorescence system.The results showed that the photosynthetic rate of flag leaf and sheath either Triticum aestivum (Chinese spring) or octploid Tritielytrigia types showed midday depress,the daily progress of net photosynthetic rate (P_n) was an obvious double-peak curve.The peak values were at 11:00 am and 3:00 pm respectively. The photosynthetic rate of flag leaf of 'Xiaoyan 693' rose quickly in the morning,stomatal conductance (G_s),chlorophyll fluorescence parameters(F_v/F_m,Fv/F_o,Φ_(PSⅡ),ETR) showed similar characteristics,but NPQ was opposite.The parameters values of flag leaf and sheath of octoploid Tritielytrigia types were higher than that of Triticum aestivum (Chinese spring) and the parameters values of flag leaf were higher than that of sheath except NPQ. The parameter values of sheath of 'Xiaoyan 693' were similar to the flag leaf of Chinese spring.All of the results showed that the photosynthetic efficiency of octoploid Tritielytrigia types were higher than that of Triticum aestivum (Chinese spring), especially 'Xiaoyan 693'.It may be related to their higher light reaction activity.The photosynthesis of sheath of 'Xiaoyan 693' is also important.