CAJ | 학술논문

用浓度5%、10%、15%、20%聚乙二醇(PEG-6000)研究了渗透胁迫对甜瓜幼苗叶片渗透调节物质及膜脂过氧化的影响.结果表明,随着PEG浓度的增加,胁迫时间的延长,叶片相对含水量降低,细胞膜相对透性增大,脯氨酸和丙二醛(MDA)积累增加,可溶性糖先升后降,可溶性蛋白含量先降后升.高浓度PEG引起各项指标变幅大于低浓度PEG.表明甜瓜对适度的渗透胁迫具有一定的适应性,但高浓度、长时间的PEG渗透胁迫会对甜瓜造成严重损伤.
용농도5%、10%、15%、20%취을이순(PEG-6000)연구료삼투협박대첨과유묘협편삼투조절물질급막지과양화적영향.결과표명,수착PEG농도적증가,협박시간적연장,협편상대함수량강저,세포막상대투성증대,포안산화병이철(MDA)적루증가,가용성당선승후강,가용성단백함량선강후승.고농도PEG인기각항지표변폭대우저농도PEG.표명첨과대괄도적삼투협박구유일정적괄응성,단고농도、장시간적PEG삼투협박회대첨과조성엄중손상.
Effect of osmolytes and lipid peroxidation in muskmelon seedling is treated with 5%,10%,15%,20% polyethylene glycol(PEG-6000).Results showed that as the stress degree increased or the time prolonged, the relative water content of leaves decreased, relative permeability of cell membrane increase, proline content and MDA accumulated, soluble sugar increased first and decreased afterwards, soluble protein decreased first and then increased. Under high-concentration,many indexes varied greater than low-concentration. It indicated that muskmelon had some adaptability to moderate osmotic stress, but the PEG osmotic stress with high concentration and long time might lead to severe damage on muskmelon.