CAJ | 학술논문

目的：研究不同品种红景天对冻害胁迫的抗逆性。方法以狭叶红景天(R.kirilowii)、大花红景天(R.crenulata)、唐古特红景天(R.Algida)、长鞭红景天(R.fastigiata)为材料，通过大田试验和实验室检测，研究冻害胁迫对不同品种的红景天出苗时间、出苗持续时间、出苗率、成活率、超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性的影响。结果冻害在出苗前发生时，对狭叶红景天的出苗情况影响最大，长鞭红景天最小。幼苗期发生冻害时，狭叶红景天成活率最小、抗逆性物质SOD和POD的活性升幅最小，冻害最严重；长鞭红景天成活率最大、SOD和POD的活性升幅最大，冻害最轻。4种红景天抗逆性强弱顺序依次为：长鞭红景天＞大花红景天＞唐古特红景天＞狭叶红景天。结论在甘肃省甘南地区引种栽培红景天时，选择长鞭红景天和大花红景天较易成功，其中以长鞭红景天为最佳。
목적：연구불동품충홍경천대동해협박적항역성。방법이협협홍경천(R.kirilowii)、대화홍경천(R.crenulata)、당고특홍경천(R.Algida)、장편홍경천(R.fastigiata)위재료，통과대전시험화실험실검측，연구동해협박대불동품충적홍경천출묘시간、출묘지속시간、출묘솔、성활솔、초양화물기화매(SOD)활성、과양화물매(POD)활성적영향。결과동해재출묘전발생시，대협협홍경천적출묘정황영향최대，장편홍경천최소。유묘기발생동해시，협협홍경천성활솔최소、항역성물질SOD화POD적활성승폭최소，동해최엄중；장편홍경천성활솔최대、SOD화POD적활성승폭최대，동해최경。4충홍경천항역성강약순서의차위：장편홍경천＞대화홍경천＞당고특홍경천＞협협홍경천。결론재감숙성감남지구인충재배홍경천시，선택장편홍경천화대화홍경천교역성공，기중이장편홍경천위최가。
Objective To study the stress resistance of Rhodiola under freezing injury stress. Methods With R.kirilowii, R.crenulata, R.Algida and R.fastigiata as the experimental materials, the effects of freezing injury stress on emerging time, duration of seedling emergence, emergence rate, surviving rate, the activity of SOD and POD were observed by field test and experimental detection. Results Before seeding, the effect of freezing injury stress on R.kirilowii was the largest, and that on R.fastigiata was the least. When injury stress happened during seedling stage, surviving rate, increase of SOD and POD activities of R.kirilowii was the least, indicating the freezing injury was severe. R.fastigiata was the best in those indexes. The stress resistance of Rhodiola was as follows:R.fastigiata > R.crenulata > R.Algida > R.kirilowii. Conclusion R. fastigiata and R.crenulata are good choice in introduction and cultivation of Rhodiola in Gannan area of Gansu province, and R.fastigiata is the best.