CAJ | 학술논문

采用PEG-6000不同浓度模拟干旱条件，研究裸果木幼苗的叶片相对含水量、脯氨酸含量、可溶性糖含量、丙二醛含量、超氧化物歧化酶（SOD）活性的变化。结果表明，随着PEG-6000胁迫浓度的增加，裸果木幼苗叶片的相对含水量显著下降，脯氨酸含量增加。 PEG-6000浓度为10%和15%时脯氨酸显著积累，可溶性糖含量显著降低，丙二醛含量显著增加。干旱对膜系统造成了明显的损伤，但叶片能够通过增强超氧化物歧化酶（SOD）活性产生抗氧化保护，减轻过氧化伤害。即干旱胁迫对裸果木幼苗造成了明显的伤害，而其幼苗也表现出了一定的干旱适应性。
채용PEG-6000불동농도모의간한조건，연구라과목유묘적협편상대함수량、포안산함량、가용성당함량、병이철함량、초양화물기화매（SOD）활성적변화。결과표명，수착PEG-6000협박농도적증가，라과목유묘협편적상대함수량현저하강，포안산함량증가。 PEG-6000농도위10%화15%시포안산현저적루，가용성당함량현저강저，병이철함량현저증가。간한대막계통조성료명현적손상，단협편능구통과증강초양화물기화매（SOD）활성산생항양화보호，감경과양화상해。즉간한협박대라과목유묘조성료명현적상해，이기유묘야표현출료일정적간한괄응성。
Using different concentrations of PEG-6000 simulated drought conditions, the changes of relative water content, praline content, soluble sugar content, MDA content and superoxide dismutase (SOD) activity in leaves on the bare fruit seedling. The result shows that the relative water content of the bare fruit seedling leaves decreased significantly, the proline content increased, the proline accumulation significant when concentration of PEG-6000 is 10% and 15%, soluble sugar content decreased significantly, the content of MDA increased significantly, the drought caused significant damage to membrane system at PEG-6000 stress concentration increases, but the leaf can through enhanced superoxide dismutase (SOD) activity to produce antioxidant protection, relieve oxidative damage . That is, the drought stress caused significant damage to the bare fruit seedlings, and the seedlings also showed a certain drought adaptability.