CAJ | 학술논문

以子叶全展期的棉花幼苗为材料，在1/4 Hoagland营养液中添加不同浓度，0，10，50，100，200μmol/L SNP （硝普钠）处理棉花幼苗，研究外源NO对棉花幼苗叶片和根系氧化损伤和保护酶活性的影响。结果表明：外源NO供体SNP处理使棉苗叶片和根系MDA含量和O·-2产生速率显著增加，可溶性蛋白含量（叶片）显著降低，SOD、POD活性增加，但是CAT活性下降。10～100μmol/L SNP处理间差异不显著。各生理指标之间差异优先表现在叶片中。结果表明，外源NO在一定浓度范围内抑制棉花幼苗的生长。
이자협전전기적면화유묘위재료，재1/4 Hoagland영양액중첨가불동농도，0，10，50，100，200μmol/L SNP （초보납）처리면화유묘，연구외원NO대면화유묘협편화근계양화손상화보호매활성적영향。결과표명：외원NO공체SNP처리사면묘협편화근계MDA함량화O·-2산생속솔현저증가，가용성단백함량（협편）현저강저，SOD、POD활성증가，단시CAT활성하강。10～100μmol/L SNP처리간차이불현저。각생리지표지간차이우선표현재협편중。결과표명，외원NO재일정농도범위내억제면화유묘적생장。
Cotyledon full extension of the cotton seedling as material ,in the 1/4 Hoagland nutrient solution with different concentration of SNP( 0,10,50,100,200 μmol/L)processing cotton seedling,study of oxidative damage and activities of protective enzymes of exogenous nitric oxide on cotton seedling leaves and roots .The results show that:with the treatment of SNP ,the content of MDA and the generation rate of O ·-2 of cotton seedling leaves and roots increased significantly ,the content of soluble protein of leaves decreased significantly , SOD and POD activity in-creased ,while CAT activity decreased .The difference under 10-100 μmol/L SNP processing were not remarkable between treatments .The difference of physiological indexes between treatments was priority performance in leaves . These results suggest that exogenous nitric oxide in certain concentration range inhibit cotton seedling growth .