云南竹笋资源利用及市场化分析     

陈云芳  赖庆奎  李智勇 《资源科学》2011,33(3):582-587

竹笋是云南的一项重要的非木材林产品资源,有着种类多、分布广、品质好、价格低等特点。但长期以来,由于山区村民受传统观念影响,对竹笋资源的不合理采集和粗加工方式,制约了此项特色和优势生物资源的可持续利用,对山区经济发展产生了不利影响。本研究选取普洱的澜沧、玉溪的新平和红河洲的金平三个产竹区作为调查研究区域,应用参与式农村评估、市场调查分析方法,对各研究点的关键人物、典型农户进行调查和访谈,针对调查结果反映问题进行分析和讨论,并提出建议,包括:完善现有竹林资源的经营管理模式,使更多的贫困农户参与并获益;扶持专业的竹笋加工企业,以提高竹笋产品的附加值和市场化程度;健全的林产品市场体系,为云南竹类资源的可持续利用和竹产业的发展提供基础平台。  相似文献   

论念动训练法在篮球投篮训练中的应用   总被引：4，自引：0，他引：4  

李毅  江亮 《四川体育科学》2004,(1):40-41

念动训练法在现代的各项运动训练中有着广泛的应用，在篮球的投篮训练中采用念动法将能明显提高投篮命中率，取得满意的训练效果．  相似文献   

维管植物营养苗端的结构与演化     

吴鸿  杨培君  尤立 《陕西理工学院学报(社会科学版)》1994,(Z2)

不同类群植物营养苗端的结构存在一定的差异.对维管植物营养苗端的结理论进行了综述;并探讨了苗端结构的演化与系统演化的关系.其趋势随着植物类群的演化等级表现为由简单到复杂,又由复杂到简化的螺旋式上升进化路线.  相似文献   

美国优秀前锋投篮技术运用和区域分析   总被引：7，自引：0，他引：7  

万建红  周爱青 《江西教育学院学报》2005,26(3):37-39

根据美国篮球运动员、优秀前锋投篮技术运用及投篮分布范围的统计、分析、研究，得出美国前锋投篮技术运用主要有挤、抗投篮、突破投篮、补篮等技术，据攻击范围的投篮成功率依次为近区、中区、远区。  相似文献   

林昌彝《射鹰楼诗话》的诗史价值     

陈其泰 《闽江学院学报》2012,33(4):1-7

林昌彝是鸦片战争时期福州一位值得纪念的历史人物,他不仅是诗人、学者,更是著名的爱国志士。所著《射鹰楼诗话》是一部值得重视的文学批评著作,而同时又是一部及时收录记载鸦片战争诗篇、弘扬中国人民英勇精神的诗史。其诗史价值,还在于着重记载了道光年间海内一批有识之士对现实社会问题的卓识,再现了这批经世派人物的精神风貌。阐释和重温这部名作的诗史价值,在今天仍有多方面的深刻启示意义。  相似文献   

Assessing the response of indigenous loquat cultivar Mardan to phytohormones for in vitro shoot proliferation and rooting     

Nadeem Akhtar Abbasi  Tariq Pervaiz  Ishfaq Ahmed Hafiz  Mehwish Yaseen  Azhar Hussain 《Journal of Zhejiang University. Science. B》2013,14(9):774-784

In vitro cultures of loquat cultivar Mardan were established using shoot apices after treating with NaOCl (5%, 7%, 10%, 12%, 14% (v/v)) for 12 min and HgCl₂ (0.01%, 0.05%, 0.10%, 0.20%, 0.25% (w/v)) for 2 min. A maximum survival rate of 70% was recorded after surface sterilization with 10% NaOCl. Caulogenic response was assessed on Murashige and Skoog (MS) medium fortified with assorted combinations of the cytokinins, benzylaminopurine (BAP), kinetin, and N6-(2-isopentyl)adenine (2iP). Treatment of BAP 1.5 mg/L combined with 2iP 9.0 mg/L and kinetin 1.5 mg/L was found to be optimum for shoot morphogenesis in terms of the number and subsequent growth of shoots, while the highest shoot length was yielded by the combination of BAP 0.5 mg/L, kinetin 0.5 mg/L, and 2iP 3 mg/L. Higher levels of cytokinins induced callogenesis, vitrification and stunted growth to some extent. For rhizogenesis, uniform sized micro-shoots were excised and transferred to half-strength MS medium containing auxins. The best rooting expression was observed with naphthaleneacetic acid (NAA) 1 mg/L combined with indole-3-butyric acid (IBA) 2 mg/L and paclobutrazol (PBZ) 1 mg/L.  相似文献   

樱桃番茄"情人果"离体再生体系的建立   总被引：1，自引：0，他引：1  

秦改花  孟丽 《安徽科技学院学报》2006,20(2):1-3

以樱桃番茄“情人果”的无菌苗茎段为材料,研究了不同激素处理对其不定芽诱导以及芽苗生根的影响,结果表明:(1)不定芽诱导的最适培养基配方为MS 6-BA0.5mg/L;(2)芽苗生根的最适培养基配方为:MS NAA0.05 mg/L。  相似文献   

精品课程教学录像的设计与制作   总被引：2，自引：0，他引：2  

张伟  丁彦  李忠  陈琳 《现代教育技术》2010,20(2):153-157

精品课程教学录像是精品课程重要的组成部分,具有多种不同的表现形式和录制模式,文章就目前精品课程教学录像中普遍存在的问题入手,分析各高校普遍采用的录制方式的优缺点,在实践的基础上提出了单机位拍摄与后期艺术处理并行进行精品课程教学录像摄制的优势。  相似文献   

重视投篮意识的培养与训练     

高毅勇 《四川体育科学》1998,(4)

篮球运动中任何一项技术的提高都是从意识的提高开始。意识贯穿于篮球运动的始终。因此,重视其意识的培养,是每一个运动队面临的重要课题和迫切需要解决的问题。  相似文献   

Improving micropropagation of some grape cultivars via boron,calcium and phosphate     

《Electronic Journal of Biotechnology》2020

BackgroundAn efficient regeneration protocol is a priority for the successful application of plant biotechnology. Grape nodal explants were used to develop a micropropagation protocol for Thompson Seedless and Taify cvs. Explants were cultured on MS medium supplemented with Kinetin or benzylaminopurine (BA) and indolebutyric acid (IBA).ResultsFor both cultivars, axillary buds were grown, only, on a medium enriched with kinetin, moreover, shoot tip necrosis and callus formation were observed on Thompson Seedless cv. cultures grown on a medium with BA. Supplementing the growth medium with 100 mM (boron) B and 2.5 mM (calcium) Ca successfully help overcome these phenomena. The highest regenerated shoot numbers (14 and 6.2 explant⁻¹) for Taify and Thompson Seedless cvs., respectively, were on media supplemented with 13.2 µM BA + 4.9 µM IBA and BA 13.2 µM + 5.8 µM IBA, respectively. Moreover, these media supported the developing shoots to have the heaviest dry weights (1.46 and 0.72 mg explant⁻¹) for Taify and Thompson Seedless cvs., respectively. Thompson Seedless cv. regenerated shoot numbers and their dry weights were significantly increased by increasing the MS medium PO₄⁻ concentration. However, these two parameters were significantly decreased for Taify cv. Developing shoots were elongated and rooted on MS medium enriched with 4.9 µM, IBA 100 mM B and 2.5 mM Ca. Plantlets were acclimatized and successfully transferred to the greenhouse conditions.ConclusionsA novel promising protocol for Thomson Seedless and Taify cvs. micropropagation using single nodes has been developed.How to cite: Al-Aizari AA, Al-Obeed RS, Mohamed MA-H. Improving micropropagation of some grape cultivars via boron, calcium and phosphate. Electron J Biotechnol 2020;49. https://doi.org/10.1016/j.ejbt.2020.10.001  相似文献