CAJ | 학술논문

采用 CI－340手持式光合作用测定系统对引种的7个沙棘品种的光合特性进行了测定。结果表明：参试品种的光合参数品种间差异显著（ P＜0．05），光补偿点和光饱和点的变化范围分别为5．72～36．39和5577．5～844．47μmol· m－2· s－1，表明这些沙棘品种均属于喜光植物；表观量子效率和最大净光合速率（ Pmax ）的变化范围分别为0．009～0．021和6．99～13．77μmol· m－2· s－1，整体上沙棘对弱光的利用能力和光合转化效率较低；深秋红和依尼亚的抗旱能力较差，壮圆黄和阿尔泰的抗旱能力较强，这4个沙棘品种均具有较高净光和速率和叶肉瞬时羧化效率，较低的胞间CO2摩尔分数，对光能的利用效率较高，可以进一步筛选出光合能力更强的株系或品种。
채용 CI－340수지식광합작용측정계통대인충적7개사극품충적광합특성진행료측정。결과표명：삼시품충적광합삼수품충간차이현저（ P＜0．05），광보상점화광포화점적변화범위분별위5．72～36．39화5577．5～844．47μmol· m－2· s－1，표명저사사극품충균속우희광식물；표관양자효솔화최대정광합속솔（ Pmax ）적변화범위분별위0．009～0．021화6．99～13．77μmol· m－2· s－1，정체상사극대약광적이용능력화광합전화효솔교저；심추홍화의니아적항한능력교차，장원황화아이태적항한능력교강，저4개사극품충균구유교고정광화속솔화협육순시최화효솔，교저적포간CO2마이분수，대광능적이용효솔교고，가이진일보사선출광합능력경강적주계혹품충。
We studied the photosynthetic capacity of seven introduced sea buckthorn cultivars and determined different photosyn -thetic characteristics by using CI-340 portable photosynthesis system .The varieties of photosynthetic parameters in different cultivars were significantly different ( P<0.05), LCP and LSP changes were in 5.72-36.39μmol · m-2 · s-1 and 557.75-844 .47μmol· m-2· s-1 , respectively, indicating that these sea buckthorn varieties belonged to light-loving plants.AQY and Pmax changes were in 0.009-0 .021μmol· m-2· s-1 and 6.99-13.77μmol· m-2· s-1, respectively.The whole sea buckthorn capacity utilization to weak light and photosynthetic conversion efficiency were low .The drought resistant ability of Shenqiuhong and Yiniya was poor , drought resistant ability of Zhuang yuanhuang and Altai strong was strong , and four cultivars had higher Pn andP n/Ci , lower Ci , and the higher efficiency of light energy utilization .Our results can be used for further cultivating the clones and varieties of more photosynthetic capacity .