CAJ | 학술논문

干旱是最严重的自然灾害之一，影响植物的生长、发育和繁殖等生命活动。干旱逆境可引起植物生理生化方面的一系列变化。近几年，云南省干旱问题愈加严重，因此，本研究以云南省主栽马铃薯（Solanum tuberosum L.）品种‘会-2’为试验材料，研究干旱胁迫对马铃薯抗氧化酶活性和光合特性的影响，以期在干旱情况下为稳定马铃薯的生产、提高产量提供理论依据。结果表明，随着干旱胁迫的加剧块茎干重下降比较明显；在光合特性方面，净光合速率、气孔导度、蒸腾速率和细胞胞间隙CO2浓度降低，干旱胁迫下，细胞失水，气孔关闭，限制CO2吸收，蒸腾速率减弱，从而影响光合作用的速率；干旱胁迫会诱导抗氧化酶活性的降低，减弱抗氧化酶对活性氧的清除能力，导致危害植物的丙二醛大量积累。
간한시최엄중적자연재해지일，영향식물적생장、발육화번식등생명활동。간한역경가인기식물생리생화방면적일계렬변화。근궤년，운남성간한문제유가엄중，인차，본연구이운남성주재마령서（Solanum tuberosum L.）품충‘회-2’위시험재료，연구간한협박대마령서항양화매활성화광합특성적영향，이기재간한정황하위은정마령서적생산、제고산량제공이론의거。결과표명，수착간한협박적가극괴경간중하강비교명현；재광합특성방면，정광합속솔、기공도도、증등속솔화세포포간극CO2농도강저，간한협박하，세포실수，기공관폐，한제CO2흡수，증등속솔감약，종이영향광합작용적속솔；간한협박회유도항양화매활성적강저，감약항양화매대활성양적청제능력，도치위해식물적병이철대량적루。
Drought stress is one of the most serious natural disasters, affecting the growth, development and reproduction of plants. It could also lead to the plant physiological and biochemical changes. Drought in Yunnan Province occurs more frequently in recent years, and an experiment was designed thereafter using potato (Solanum tuberosum L.) variety‘Hui-2’as experimental material to investigate the effects of drought stress on the activity of antioxidant enzymes and photosynthetic characteristics in potato, which might provide a theoretical base for stable and high yielding production of potato in a drought environment. The results showed that yield decreased with the drought stress deteriorating. Also, the net photosynthetic rate in leaf reduced due to the decline in stomatal conductance, transpiration rate and intercellular CO2 concentration. The results indicated that drought stress reduced antioxidant enzyme activity, and its scavenging capacity of active oxygen, resulting in a large number of malondialdehyde, which might harm the potato plants.