| 优康唑对柚树苗生长和一些生理特性的影响 |
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| 引用本文： | 阮少艺,聂磊,刘鸿先.优康唑对柚树苗生长和一些生理特性的影响[J].广西师范大学学报(自然科学版),2001,19(2):67-71. |
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| 作者姓名： | 阮少艺 聂磊 刘鸿先 |
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| 作者单位： | 1. 佛山科学技术学院农学系,
2. 中国科学院华南植物研究所, |
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| 基金项目： | 国家自然科学基金重大项目(39899370)；广东省科技创新百项工程资助项目(99B05902X) |
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| 摘 要： | 50－200mg/L优康唑处理可管缓柚树苗生长，减少叶面积和比叶面积，增加叶厚和叶肉密度，提高叶绿素和类胡萝卜素偏量，降低Chla/b比值，在50－200mg/L优康唑处理下，柚苗光合速率上升，Rd/Pn比值下降，50－100mg/L优康唑处理提高叶片Fv/Fo,Fv/Fm,ΦPSⅡ，qp,降低PN，KD，从而促进叶片PSII的光化学活性，50－200mg/L优康唑处理能提高柚类叶片NR，NiR,GS和SOD，CAT，APX活性，表明叶片氮代谢水平和抗氧化能力增强，优康唑处理的最佳浓度为100mg/L。
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| 关 键 词： | 机树苗 优康唑 生长 生理特性 |
| 文章编号： | 1001-6600(2001)02-0067-05 |
| 修稿时间： | 2001年4月9日 |
EFFECTS OF UNICONAZOLE ON GROWTH AND SOME PHYSIOLOGICAL CHARACTERISTICS IN POMELO SEEDLINGS |
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| RUAN Shao-yi,NIE Lei,LIU Hong-xian.EFFECTS OF UNICONAZOLE ON GROWTH AND SOME PHYSIOLOGICAL CHARACTERISTICS IN POMELO SEEDLINGS[J].Journal of Guangxi Normal University(Natural Science Edition),2001,19(2):67-71. |
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| Authors: | RUAN Shao-yi NIE Lei LIU Hong-xian |
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| Abstract: | 50～200 mg/L Uniconazole significantly (P＜0.05) retarded the growth of pomelo seedlings,decreased leaf area and specific leaf area,increased leaf thickness and mesophyll density,enhanced the contents of leaf chlorophyll and carotenoid,reduced chla/b ratio.Leaf Pn was improved,and Rd/Pn ratio was decreased under 50～200 mg/L Uniconazole treatments.Application of 50～100 mg/L Uniconazole could increase Fv/Fo,Fv/Fm,ΦPSⅡ,qP,and decrease qN,KD,therefore improve the photochemical activity of leaf photosystemⅡ.The activities of NR,NiR,GS and SOD,CAT,APX were significantly increased by 50～200 mg/L Uniconazole treatments,and it is suggested that the level of leaf nitrogen metabolism and the capacity of antioxidation were enhanced.100 mg/L Uniconazole was therefore suggested on pomelo. |
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