广西师范大学学报(自然科学版)
廣西師範大學學報(自然科學版)
엄서사범대학학보(자연과학판)
JOURNAL OF GUANGXI NORMAL UNIVERSITY(NATURAL SCIENCE EDITION)
2001年
2期
67-71
,共5页
柚树苗%优康唑%生长%生理特性
柚樹苗%優康唑%生長%生理特性
유수묘%우강서%생장%생리특성
50～200 mg/L优康唑处理可延缓柚树苗生长，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含量，降低Chla/b比值.在50～200 mg/L优康唑处理下，柚苗光合速率上升，Rd/Pn比值下降.50～100 mg/L优康唑处理提高叶片Fv/Fo,Fv/Fm,ΦPSⅡ,qP,降低qN,KD,从而促进叶片PSⅡ的光化学活性.50～200 mg/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100 mg/L.
50～200 mg/L優康唑處理可延緩柚樹苗生長，減少葉麵積和比葉麵積，增加葉厚和葉肉密度，提高葉綠素和類鬍蘿蔔素含量，降低Chla/b比值.在50～200 mg/L優康唑處理下，柚苗光閤速率上升，Rd/Pn比值下降.50～100 mg/L優康唑處理提高葉片Fv/Fo,Fv/Fm,ΦPSⅡ,qP,降低qN,KD,從而促進葉片PSⅡ的光化學活性.50～200 mg/L優康唑處理能提高柚類葉片NR，NiR,GS和SOD,CAT,APX活性，錶明葉片氮代謝水平和抗氧化能力增彊.優康唑處理的最佳濃度為100 mg/L.
50～200 mg/L우강서처리가연완유수묘생장，감소협면적화비협면적，증가협후화협육밀도，제고협록소화류호라복소함량，강저Chla/b비치.재50～200 mg/L우강서처리하，유묘광합속솔상승，Rd/Pn비치하강.50～100 mg/L우강서처리제고협편Fv/Fo,Fv/Fm,ΦPSⅡ,qP,강저qN,KD,종이촉진협편PSⅡ적광화학활성.50～200 mg/L우강서처리능제고유류협편NR，NiR,GS화SOD,CAT,APX활성，표명협편담대사수평화항양화능력증강.우강서처리적최가농도위100 mg/L.
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.
