CAJ | 학술논문

主要研究温度胁迫对杨梅叶片光合作用的影响,利用液相氧电极对温度胁迫后荸荠和东魁两个杨梅品种的光合速率和呼吸速率进行测定.结果发现,温度胁迫后,杨梅叶片的净光合速率明显低于对照(25℃),并且随着胁迫时间的延长,净光合速率进一步降低;而呼吸速率则相反,胁迫后,呼吸速率大于对照,并随着胁迫时间的延长而升高.其中胁迫温度越高或越低,对杨梅叶片的影响就越大.在胁迫解除后,除10℃处理的荸荠呼吸速率能恢复到正常水平,其他处理的杨梅叶片的净光合速率和呼吸速率均无法恢复到对照水平.表明温度胁迫对杨梅叶片光合作用的影响是明显的.另外此试验还研究了不同温度处理的杨梅叶片在不同反应液下(2℃和10℃、35℃和40 ℃)的净光合速率和呼吸速率的变化.其结论与前者一致.
주요연구온도협박대양매협편광합작용적영향,이용액상양전겁대온도협박후발제화동괴량개양매품충적광합속솔화호흡속솔진행측정.결과발현,온도협박후,양매협편적정광합속솔명현저우대조(25℃),병차수착협박시간적연장,정광합속솔진일보강저;이호흡속솔칙상반,협박후,호흡속솔대우대조,병수착협박시간적연장이승고.기중협박온도월고혹월저,대양매협편적영향취월대.재협박해제후,제10℃처리적발제호흡속솔능회복도정상수평,기타처리적양매협편적정광합속솔화호흡속솔균무법회복도대조수평.표명온도협박대양매협편광합작용적영향시명현적.령외차시험환연구료불동온도처리적양매협편재불동반응액하(2℃화10℃、35℃화40 ℃)적정광합속솔화호흡속솔적변화.기결론여전자일치.
Photosynthetic and respiratory rates of different waxberry varieties ("Biqi" and "Dongkui") under low temperature stress (2 ℃ and 10 ℃) and high temperature stress (35 ℃ and 40 ℃) were determined by using an oxygen electrode. The results showed that net photosynthetic rate of Myrica rubra leaves reduced markedly when compared to control one (25 ℃) as the temperature stress being severer, while respiratory rate increased accordingly. Neither net photosynthetic rate nor respiratory rate came back to natural level while the Myrica rubra leaves freed from temperature stress except the ones under 10℃. Besides, studies on photosynthetic and respiratory rates under different temperatures (2, 10, 35 and 40 ℃) of NaHCO3 solution also showed the similar results. It proved that temperature played important role in Photosynthesis of Myrica rubra leaves.