福建省的野生果树种质资源   总被引：8，自引：0，他引：8  

韦晓霞  胡菡青  吴如健  钟秋珍  吴少华  郑少泉 《江西农业学报》2006,18(6):67-70,74

结合有关文献,对福建省的野生果树种质资源进行了调查,结果表明:福建省野生果树种质资源有44科82属256种和26变种。这些野生果树主要集中在蔷薇科、壳斗科、芸香科、猕猴桃科、葡萄科。福建省野生果树乔木类有122种,灌木类有114种,藤本类有38种,草本类有8种。此外,还对野生果树的开发利用前景进行了分析。  相似文献   

庐山自然保护区秋色叶树种观赏特性及其园林造景应用     

周庐萍  宗德欢  叶芳菲  符秀玉  邹芹  冯艳  庐俊 《江西林业科技》2012,(4):54-56

介绍庐山保护区秋色叶树种观赏特性,从造景的角度,探讨秋色叶树种在园林中的应用,并提出开发对策。  相似文献   

树形结构对果树生产能力的影响分析   总被引：1，自引：0，他引：1  

杨飞  卢桂宾  杜俊杰  季兰 《山西林业科技》2012,41(1):46-49

果树树形与结构是影响果树产量的重要因素,笔者结合国内外的研究状况,综述了不同树形结构对光能利用率、营养与生殖、抗逆性、产量品质、实际生产的影响,指出适宜的栽植密度、合理的树形结构是保证果园光照良好,产量和品质提高的重要措施。  相似文献   

From shallow to deep waters: habitats used by larval lampreys (genus Petromyzon and Lampetra) over a western European basin     

Catherine Taverny  Isabelle Ortusi  Charles Roqueplo  Mario Lepage  Patrick Lambert 《Ecology of Freshwater Fish》2012,21(1):87-99

Abstract –  Habitat requirements of lamprey ammocoetes (Petromyzon marinus and Lampetra genus) were investigated, for the first time, from shallow to deep waters, at different spatial scales across the Gironde‐Dordogne continuum, thanks to a water suction dredge. Fish‐habitat relationships were assessed through two complementary statistical analyses: habitat‐use curves and habitat suitability models using the Boosted Regression Trees (BRT) technique. Analyses were performed on a small‐size data set that was characterised by the low prevalence of lamprey. The sea lamprey larvae occurred in deeper areas than their Lampetra genus counterparts. ‘Pools’ of 2 m’ depth and more were optimal habitats for the former species. Among the environmental variables retained to model lamprey occurrences, the mesohabitat (a categorical variable) was demonstrated to be highly influential, in terms of fine grain‐size substratum and vegetation cover. These preliminary results suggest that monitoring using the water suction dredge method may contribute to sea lamprey conservation.  相似文献   

Needle Collection Time for Nutrient Evaluation in Christmas Tree Production     

《Communications in Soil Science and Plant Analysis》2012,43(1-2):471-477

Christmas tree needle sampling to evaluate nutrient need is an established practice. Data to support the recommended fall sampling time in Oregon and Washington were not found. In addition, the recommendation for needle sampling of Fraser fir in North Carolina was made without data from winter months. The goal for this article is to affirm or modify recommended needle sampling time. Needles of Douglas fir, Turkish fir, Nordmann fir, Noble fir, Grand fir, and Fraser fir Christmas trees were collected monthly for a year, dried, and analyzed for nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and boron (B). No single period was found for any species when needle nutrient concentration was stable for all elements determined. Needle collection time was chosen by integrating cultural practices, likelihood of nutrient deficiency, and needle nutrient concentration changes for species grown in an area. Needle collection is recommended during February in western Oregon and Washington. The current sampling time, fall, is logical for Fraser fir Christmas tree production in North Carolina.  相似文献   

Testing variability in pathogenicity ofPhytophthora cactorum, P. citrophthora andP. syringae to apple, pear, peach, cherry and plum rootstocks     

Thomas Thomidis 《Phytoparasitica》2001,29(1):47-49

The relative virulence ofPhytophthora cactorum andP. syringae originating from almond trees, and ofP. citrophthora originating from citrus, to apple, pear, peach, cherry and plum rootstocks, was studiedin vivo andin vitro. Results of the different experiments were in good agreement. All testedPhytophthora isolates showed little virulence to pear rootstocks-causing only minor crown rot symptoms - and no virulence at all to apple rootstocks. In contrast, they were highly virulent to stone fruit rootstocks, causing crown rot disease. The non-pathogenicity of these isolates to pome rootstocks could be interpreted as strict host specificity.  相似文献   

山东苹果主要病虫害化学防治技术   总被引：2，自引：1，他引：2  

吴桂本  王继秋  王培松  宫本义 《农药科学与管理》2001,(Z1)

山东省苹果园害虫优势种群是蚜虫、桃小食心虫、苹小卷、金纹细蛾、害螨等 ;病害主要是斑点落叶病、轮纹病。根据不同病虫害的发生发展规律和烟台农科院多年来的化学防治试验研究 ,明确了不同苹果品种上适用的有效药剂和不同药剂的杀虫 (菌 )谱、用药适期、施药方法 ,制定了相应的防治策略 ,提出了合理用药、交替施药和安全喷药等诸多注意事项  相似文献   

福建果树根部的芒果半轮线虫记述   总被引：4，自引：2，他引：4  

张绍升 《植物病理学报》1995,25(1):39-42

 芒果半轮线虫(Hemicriconemoides mangiferae Siddiqi,1961)在福建省一些果园发生。寄主有龙眼(Euphoria longana)、荔枝(Litchi chinensis)、芒果(Mangifera indica)、橄榄(Canarium album)、枇杷(Eriobotrya japonica)和葡萄(Vitis vinifera)等果树。雌虫唇部正面、环纹和阴门,雄虫侧带以及幼虫角质膜刺突等细微结构用扫描电子显微镜观察。  相似文献   

Occurrence of chrysanthemum virescence caused by “<Emphasis Type="Italic">Candidatus</Emphasis> Phytoplasma aurantifolia” in Okinawa     

Takashi Naito  Minoru Tanaka  Satoshi Taba  Tesuya Toyosato  Atsushi Oshiro  Kazuko Takaesu  Kazuo Hokama  Tomio Usugi  Shinji Kawano 《Journal of General Plant Pathology》2007,73(2):139-141

In 1999, a disease of chrysanthemum [Dendranthema grandiflorum (Ramat.) Kitamura], characterized by virescence of flowers, occurred in Okinawa Prefecture. The causal agent was identified as “Candidatus Phytoplasma aurantifolia” based on 16S rDNA sequencing. The nucleotide sequence data reported are available in the DDBJ/EMBL/GenBank databases under accession number AB247462.  相似文献   

RAPD及其在果树上的应用     

李发芳  罗正荣  蔡礼鸿 《果树学报》1998,(3)

就RAPD的特点、操作及其在果树品种鉴定、遗传多样性检测、系谱解析和遗传图谱构建等方面的应用和进展进行了简要的阐述。  相似文献