不同浓度NO3-处理对小白菜生长、品质及抗氧化酶活性的影响

以小白菜为试验材料,利用水培方法,研究不同浓度NO3-处理对小白菜生长、品质及抗氧化酶活性的影响,为小白菜生产及施肥提供参考.结果表明：随NO3-浓度的增加,小白菜叶片数、根体积和地上部鲜、干重均呈先增加后降低的趋势;叶片和叶柄中硝酸盐、可溶性糖和可溶性蛋白含量均先上升后下降,可溶性总酚和类黄酮含量均呈下降趋势,过氧化物酶（POD）活性和超氧化物歧化酶（SOD）活性均显著提高,过氧化氢酶（CAT）活性显著降低;各物质含量在不同器官中也有所不同,硝酸盐和可溶性糖含量表现为叶柄＞叶片,可溶性蛋白、可溶性总酚和类黄酮表现为叶片＞叶柄,POD、SOD、CAT活性表现为叶片＞叶柄....

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Bibliographic Details
Published in广东农业科学 Vol. 41; no. 16; pp. 29 - 32
Main Author 庞强强 陈日远 刘厚诚 宋世威 苏蔚 孙光闻
Format Journal Article
LanguageChinese
Published 华南农业大学园艺学院,广东广州,510642 2014
Subjects
NO3
品质
小白菜
抗氧化酶
生长
抗氧化酶
NO3
品质
小白菜
生长
Online AccessGet full text
ISSN1004-874X

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Summary:以小白菜为试验材料,利用水培方法,研究不同浓度NO3-处理对小白菜生长、品质及抗氧化酶活性的影响,为小白菜生产及施肥提供参考.结果表明：随NO3-浓度的增加,小白菜叶片数、根体积和地上部鲜、干重均呈先增加后降低的趋势;叶片和叶柄中硝酸盐、可溶性糖和可溶性蛋白含量均先上升后下降,可溶性总酚和类黄酮含量均呈下降趋势,过氧化物酶（POD）活性和超氧化物歧化酶（SOD）活性均显著提高,过氧化氢酶（CAT）活性显著降低;各物质含量在不同器官中也有所不同,硝酸盐和可溶性糖含量表现为叶柄＞叶片,可溶性蛋白、可溶性总酚和类黄酮表现为叶片＞叶柄,POD、SOD、CAT活性表现为叶片＞叶柄.
Bibliography:44-1267/S
PANG Qiang-qiang,CHEN Ri-yuan,LIU Hou-cheng,SONG Shi-wei,SU Wei,SUN Guang-wen（College of Horticulture, South China A gric ultural University, Guangzhou 510640, China）
Pakchoi was used as materials for investigating the effects of different concentrations of NO3- on the growth, quality and antioxidant activities using nutrient solution. The results indicated that the leaf number, root volume and the shoot fresh weight showed a trend of first increase and then decrease as the concentrations of NO3- increased. In the leaves and petioles, the nitrate, soluble sugar and soluble protein contents showed a trend of first increase and then decrease. Total soluble phenols and flavonoids contents decreased. POD and SOD activities increased obviously, while CAT activity decreased obviously. The contents of nitrate and soluble sugar in petioles were higher than those in leaves, the contents of soluble protein, soluble total phenols and flavonoids in leaves were higher than those in petioles, and the activities of
ISSN:1004-874X