牛皮杜鹃植株解剖结构的研究   总被引：5，自引：2，他引：3  

丁洪玲  宫宇  李美善  许明子  刘宪虎 《延边大学农学学报》2008,30(2)

在前人对杜鹃花研究的基础上,以长白山野生牛皮杜鹃(Rhododendron Chrysanthum Pall)为材料,采用常规石蜡切片法对根、茎、叶、花、果实及种子的解剖结构进行观察研究.  相似文献   

浙江12种杜鹃花属植物的果实形态、种子数及其相关性研究   总被引：4，自引：0，他引：4  

丁炳扬  盛束军  缪晶  吴欢笑 《林业科学》2000,36(4):102-105

杜鹃花属(ＲｈｏｄｏｄｅｎｄｒｏｎＬ.)的系统学研究尚有许多值得探索的问题(余树勋,1986;闵天禄等,1990;Ｐｈｉｌｉｐｓｏｎｅｔａｌ.,1973)。近年来,本课题组陆续对浙江杜鹃花属植物开展了分类学和形态学的研究(丁炳扬等,1987;1989;1990;1995)。本文就浙江12种野生杜鹃花属植物的果实形态、种子数及其相关性进行研究,为该属的系统学研究及引种驯化提供理论依据。1　材料与方法11　常绿杜鹃亚属(ＳｕｂｇｅｎＨｙｍｅｎａｎｔｈｅｓ)　　云锦杜鹃(Ｒ.ｆｏｒｔｕｎｅｉＬｉｎｄ1.)、猴头杜鹃(Ｒ.ｓｉｍｉａｒｕｍＨａｎｃｅ)、安徽杜鹃(Ｒ.…  相似文献   

杜鹃花新品种‘紫金粉玉’     

刘晓青  苏家乐  李畅  何丽斯  肖政  贾新平 《园艺学报》2016,43(10):2067-2068

‘紫金粉玉’是‘玉麒麟’与‘火花’杂交育成的杜鹃花新品种。花色为淡粉色;花径9.5~10.5 cm;花瓣5裂,裂深;雄蕊部分瓣化,上部裂片有醒目的深粉色斑点,花心绿色。植株长势强健,株形紧凑;耐高温高湿,适宜长江中下游地区棚室盆栽。自然始花期较早,为2月上中旬,持续20~25 d。  相似文献   

重瓣杜鹃花新品种‘紫金艳后’     

刘晓青  苏家乐  李畅  何丽斯  陈璐 《园艺学报》2013,40(10):2099-2100

 杜鹃花‘紫金艳后’是‘小叶铁红’ב汉堡’杂交育成的重瓣新品种。花色艳红；雄蕊、花萼皆完全瓣化为花瓣；花径6.0 ~ 6.5 cm。植株长势强健，株形紧凑美观；耐高温高湿，适宜长江中下游地区设施栽培。自然始花期3月下旬至4月上旬，持续25 ~ 28 d。  相似文献   

4个杜鹃品种的抗旱性比较及生理响应     

胡肖肖  金荷仙  庄晓林  唐宇力  段玉侠 《福建林学院学报》2017,37(4)

以4个5年生杜鹃品种为试验材料,采用盆栽控水法研究杜鹃植株在不同干旱程度下的形态与生理响应。旱害指数结果表明:‘国旗红’抗旱性最强,‘玉蝴蝶’次之,胭脂蜜抗旱性最弱。随着干旱胁迫程度加深,杜鹃的相对含水量显著下降(P<0.05);丙二醛(MDA)含量、相对电导率随干旱胁迫程度加深呈上升趋势;而过氧化氢酶(CAT)活性、可溶性糖含量则因品种的不同而表现出不同的结果,‘国旗红’、‘大青莲’、‘胭脂蜜’的CAT活性在重度胁迫后下降,这时可能已经达到植株耐受干旱的极限,清除氧自由基的能力降低。通过相关性和主成分分析发现CAT活性、可溶性糖、MDA含量、相对电导率、相对含水量与杜鹃抗旱性密切相关。采用隶属函数法对4个杜鹃品种的抗旱性进行综合评价,结果表明,4个品种抗旱性强弱依次为‘国旗红’>‘玉蝴蝶’>‘大青莲’>‘胭脂蜜’,与旱害指数结果一致。  相似文献   

两种杜鹃杂交种不定芽生根的培养基配方   总被引：1，自引：0，他引：1  

吴影倩  耿兴敏  罗凤霞 《林业科技开发》2013,27(4):85-89

以杜鹃杂交种R.simsii×R.mucronatum和R.pulchrum×R.mucronatum组培苗的不定芽为外植体,对基本培养基和蔗糖浓度采用单因子设计,对生长素种类和活性炭采用正交试验,对适宜的生根培养基配方进行了探讨。结果表明:不同的杂交组合适宜不定芽生根的培养基类型、蔗糖浓度及激素组合都有所不同。R.simsii×R.mucr-onatum的适宜生根培养基为1/2 WPM+20 g/L蔗糖+3 g/L AC,R.pulchrum×R.mucronatum的合适生根培养基为WPM+10 g/L蔗糖+2 mg/L IBA。适宜的移栽基质均为V泥炭∶V蛭石∶V珍珠岩=1∶1∶1。  相似文献   

湖南杜鹃属植物野生资源多样性调查     

廖菊阳  肖绿田  彭春良  许亮军  刘艳 《湖南林业科技》2013,(6):24-28,44

对湖南杜鹃属植物进行野外调查、资料收集、标本鉴定,确定湖南自然分布杜鹃属植物62种1变种,隶属5亚属8组16亚组,其中特有种有13种.湖南杜鹃属植物资源种类较多,珍稀特有植物丰富,表型性状多样.  相似文献   

不同处理方法对马缨杜鹃种子萌发和生长的影响     

李国树  徐成东  李天星  桑明强 《中国园艺文摘》2011,27(1):30-31

为探究马缨杜鹃种子萌发生长的最佳处理条件,应用不同方法处理种子.结果表明:马缨杜鹃种子用常温蒸馏水浸泡48 h萌发率最高,迟91.00%,发芽势达54.00%,是最佳处理方法;2.5%KNO3溶液处理,能促进种子萌发后胚根、胚芽的生长;70℃温水、硫酸、H2O2、CuSO4等处理种子萌发率低于50%,幼苗生长差.  相似文献   

Effects of vegetation control on nutrient removal and Fagus orientalis, Lipsky regeneration in the western Black Sea Region of Turkey     

O. Yildiz  M. Sarginci  D. Een  K. Cromack  Jr. 《Forest Ecology and Management》2007,240(1-3):186-194

Dense Rhododendron ponticum (L.) understories of eastern beech (Fagus orientalis Lipsky) stands in the Black Sea Region (BSR) of Turkey create challenging forest vegetation management problems relative to beech regeneration. Rhododendron traditionally is controlled in Turkish forests with grubbing and bulldozing. The effects of these practices on nutrient removal and natural beech regeneration have not been quantitatively studied. Two woody vegetation control treatments (bulldozing and hand-grubbing) were installed during late summer, 2002 in three mature beech stands with dense rhododendron understories in the Düzce Forest Management Directorate, in the Turkish western BSR. Aboveground biomass of each vegetation component, total aboveground vegetation biomass, nutrient concentrations, organic matter (OM) removal, and total amount of OM nutrients were determined for each woody vegetation control treatment. Soil bulk density and nutrient content, and beech seedling biomass, nutrient content, and natural regeneration also were studied. One year after treatment, the machine site preparation by bulldozing (MSP) that removed understory vegetation and attached roots, reduced mean forest floor OM content by about 84%, when compared to hand-grubbing. Mean soil C, N, K and Mg concentrations on the bulldozed sites were 36, 27, 50 and 55% less, respectively, than those on the grubbed sites. Total C and Mg amounts at the 5–10 cm soil depth were 24 and 47% lower, respectively, for mechanical site preparation (MSP) sites, when compared to grubbed sites. Overall, soil bulk density did not differ significantly between the grubbing and MSP treatments. Frequent passes on designated transects on MSP sites resulted in a significant (P < 0.01) one-third increase in bulk density of the first 20 cm soil depth, when compared to grubbed sites. No natural beech regeneration occurred on untreated control sites. Mineral soil exposure on the MSP sites increased beech seedling germination substantially. One year after treatment, the mean number of naturally regenerated seedlings for MSP sites was 2.5 times greater than for grubbed sites. Woody control treatments had significant effects upon beech seedling chemistry, with N, P, K, Ca and Mg concentrations averaging 35, 47, 12, 33 and 25% lower, respectively, for MSP sites, when compared to grubbed sites. However, mean seedling biomass and nutrient content were significantly greater (P < 0.05) on MSP sites. Long-term effects from windrowing on MSP site residues, associated topsoil and nutrients need to be evaluated.  相似文献   

湖南平江幕阜山云锦杜鹃群落特征的分析     

赵丽娟  李家湘  邓家兴 《中南林业科技大学学报(自然科学版)》2005,25(2):81-84

就湖南省平江县幕阜山云锦杜鹃群落的结构特征和动态特征进行了调查分析,结果表明:群落结构保存较为完整,立木分布均匀;云锦杜鹃的相对多度、相对频度和相对显著度均处最高值,其重要值为96.8,是该群落的建群种;该群落中云锦杜鹃种群的数量最多,其基径级结构呈正态分布,说明其尚处在相对稳定发展阶段.该群落是地带性珍稀群落,具有保护、开发和利用价值.  相似文献