高山地区美国黑树莓的栽培和管理     

张庆朝  黄洪温  杨开银 《浙江林业科技》2004,24(4):44-46

论述了美国黑树莓在泰顺高山地区引种栽培时应注意的引种栽培时间和栽培方法以及生产中应注意的搭架牵引、整形修剪、水肥管理等技术,最后分析讨论了其开发现状和今后的发展前景.  相似文献   

掌叶覆盆子的根插繁殖   总被引：3，自引：0，他引：3  

孙长清邵小明  祝天才邹国辉 《中国农业大学学报》2005,10(2):11-14

为解决掌叶覆盆子枝条杆插成活率较低的问题，以获得高效的人工沙培育苗技术采用掌叶覆盆子的根插条进行扦插繁殖试验。结果表明：1）保留须根的数量对根插效果无明显影响；2）长度为20cm、根径0．4cm以上的根插条在出芽率、出土时间和成活率上的综合表现良好；3）埋根深度以5cm为宜；4）插条以50μg／g ABT-1生根粉浸泡0．5和1h使生根率分别提高了17．4％和18．4％，但不定芽成活率分别减少了29％和26％，降低了繁殖系数；5）全年皆可取材进行扦插，冬末春初为最佳时期。  相似文献   

根尖压片法制备树莓染色体标本的研究     

王小蓉  汤浩茹  李玲  段娟  邓群仙 《四川农业大学学报》2007,25(3):277-281

以红泡刺藤(R.niveus)、栽秧泡(R.ellipticusvar.obcordatus)和插田泡(R.coreanus)绿枝或硬枝扦插生根的根尖为材料,通过取材时季与扦插环境气温,8-羟基喹啉、秋水仙素和对二氯苯3种药剂在不同的温度下预处理不同时间,混合酶液和盐酸在不同温度下解离,醋酸洋红、卡宝品红、席夫试剂和铁矾-苏木精各染色剂染色压片等的对比研究,并以细胞中有丝分裂中期分裂相的数目、染色体的清晰性、分散程度和聚缩程度以及染色体的形态为衡量指标,探索出适于树莓属植物核型分析的根尖压片方法是:当根尖长至1~2 cm、扦插环境气温17~23℃时取材,卡诺氏固定液I低温固定24 h,用0.002 mol/L 8-羟基喹啉在0~4℃下预处理24 h,再用1 mol/L HCl(60±1)℃恒温解离4~7 min,最后用卡宝品红染色压片能获得效果好树莓染色体标本,该染色体标本完全适用于核型分析。  相似文献   

四川悬钩子属植物资源调查分析     

叶萌  蒲彪  张建  向丽  赵敏 《林业科技开发》2005,19(4):16-18

研究了四川悬钩子属植物种类、分布、生态环境、生物学、繁殖特性等；已鉴定悬钩子属有28种7变种，其中光滑高梁泡、川莓、山莓、插田泡、红泡刺藤等分布广泛；繁殖方式有根蘖、种子、顶端生根和匍匐茎繁殖；并根据悬钩子的经济性状和用途进行了分类。  相似文献   

Two-year development of southern pine seedlings and associated vegetation following spray-and-burn site preparation with imazapyr alone or in mixture with other herbicides     

Harrington  Timothy B.  Minogue  Patrick J.  Lauer  Dwight K.  Ezell  Andrew W. 《New Forests》1998,15(1):89-106

Eight herbicide combinations containing imazapyr alone or in mixture with glyphosate, triclopyr, or picloram+2,4-D were applied July–August 1991 at each of three upland sites in the southeastern U.S., with or without a subsequent broadcast burn in September. Seedlings of loblolly (Pinus taeda L.) or slash (P. elliottii Engelm. var. elliottii) pine were planted that winter. Second-year (August 1993) vegetation responses indicate that broadcast burning, in combination with herbicides, was associated with increased abundances of grasses, forbs, and shrubs and decreased abundances of vines and hardwood trees. In the presence of burning, imazapyr-in-mixture treatments were associated with a high abundance of grass (53% cover) and a mean size of pines less than that of seedlings growing in imazapyr-alone treatments. In the absence of burning, imazapyr-alone treatments were associated with a high abundance of blackberry (21% cover), an average height of hardwoods (131 cm) exceeding that of pines (71 cm), and a mean size of pines less than that of trees growing in imazapyr-in-mixture treatments. Hardwood height in the absence of burning was less when imazapyr was combined with glyphosate (75 cm) than with triclopyr (102 cm). Regardless of the presence or absence of burning, size of pines and abundance of shrubs and hardwoods did not differ between imazapyr rates of 0.56 and 0.84 kg acid equivalent/ha or among herbicides applied in mixture with imazapyr.  相似文献   

甜叶悬钩子植物组织培养褐化现象控制研究   总被引：1，自引：0，他引：1  

郭治友  钱绍方  罗应 《安徽农业科学》2009,35(19):8848-8850

[目的]寻求甜叶悬钩子组织培养中的最佳抗褐化剂。[方法]以甜叶悬钩子的茎和叶为外植体,必MS为基本培养基,加入不同浓度的抗褐化剂（20％Na2S2O3、Vc和AC）,研究不同抗褐化剂对甜叶悬钩子组织培养的影响。[结果]AC和Vc都能对不同外植体起到抗褐化作用,在加入20％Na2S2O3的培养基上,外植体的褐化程度与Na2S2O3的浓度成正比,培养基中20％Na2S2O3的添加量达20ml时,外植体褐化最为迅速;在加入Vc的培养基上,随着Vc添加量的增加,培养基变成液体或半固体培养基,接入的外植体容易死亡;在加入AC的培养基上,AC的添加量为5g／L时,外植体的褐化率可控制在5％以下。抗褐化控制处理后,可以在诱导愈伤组织的培养基上培养出大量的愈伤组织。1结论IAC是较为理想的抗褐化剂,用量为5g／L。  相似文献   

黔产野生插秧泡果实的营养成分及其利用价值     

蒋华梅  石登红  杨秀群  田少波  金春强  蒋世玲 《贵州农业科学》2012,(2):15-16

为判断插秧泡果实能否作为保健水果进行开发利用,对比分析了黔产插秧泡果实和苹果的营养成分。结果表明:插秧泡果实中氨基酸含量为6.16%,必需氨基酸含量达40.2%;矿物质元素含量丰富;维生素B2、维生素E含量为1.3mg/100g、6.6mg/100g;插秧泡果实营养成分含量均远高于苹果,且其中砷、汞、铅的含量均低于食品卫生标准的限量规定。因此,黔产插秧泡果实具有较高的营养价值和医疗保健作用,可作为保健水果进行合理开发利用。  相似文献   

4种悬钩子属植物的繁育方式研究     

王鹏霄  徐洁  李雪霞 《北京农学院学报》2013,28(2)

选取山莓(Rubus corchorifolius L.f.)、插田泡(R.coreanus Miq.)、光滑悬钩子(R.tsangii Merr.)、茅莓(R.parvifolius L.)4种野生悬钩子健壮植株为材料,通过扦插、分株和根蘖、压条等试验,研究其最适繁育方式。结果表明,4种悬钩子的木质化结构不充分,扦插生根较为困难;山莓可通过分株和根蘖的方式繁殖;插田泡可通过分株、根蘖、压条的方式进行繁殖;光滑悬钩子主要通过分株和根蘖的方式繁殖;茅莓可通过分株、根蘖和压条的方式繁殖。  相似文献   

Cloudberries—The Northern Gold     

《International Journal of Fruit Science》2013,13(2):45-60

  相似文献   

Molecular characterization of Erwinia amylovora strains from different host plants through RFLP analysis and sequencing of hrpN and dspA/E genes     

S. Giorgi  M. Scortichini† 《Plant pathology》2005,54(6):789-798

A total of 73 Erwinia amylovora strains obtained from 13 Maloideae host species and from Rubus spp., and isolated from different geographic areas, were assessed using RFLP and DNA sequencing analysis of the 3' hrp N gene and/or of a fragment of 1341 bp of the dsp A/E region. An Erwinia pyrifoliae strain, used as outgroup, was checked in the same way. For the three strains isolated from Rubus spp. and for one strain from Amelanchier sp., RFLP analysis of the hrp N gene using the Rsa I enzyme yielded a PCR product 60 bp smaller than that of all the other strains. Sequence analysis of the gene revealed this was due to the absence of a 60 bp fragment in the noncoding region downstream of the gene. The strain PD 2915, isolated from Amelanchier sp. grown in Canada, showed five same-sense substitutions and one missense substitution at position 868 of the hrp N gene, converting aspartic acid into asparagine. Also, restriction analysis of a fragment of 613 bp of the dsp A/E region with Cfo I revealed an RFLP pattern suitable for differentiating the E. amylovora strains isolated from Rubus spp. and Amelanchier sp. from all the others. In the dsp A/E coding region, the four strains showed 13–14 missense point mutations, in some cases yielding drastic amino acid substitutions. In addition, partial sequencing of the dsp A/E region of PD 2915 from Amelanchier sp. indicated a higher similarity to E. amylovora strains isolated from Rubus spp. than towards strains from other Maloideae hosts. The E. pyrifoliae strain showed 23 single nucleotide substitutions along the hrp N gene and 88% of nucleotide identity with E. amylovora strains in the portion of dsp A/E region. Artificial inoculations on immature pear fruits and young shoots of Maloideae and Ruboideae showed a restricted pathogenicity for the strains from Rubus and Amelanchier , with the latter inciting blight symptoms only on Amelanchier .  相似文献