共查询到20条相似文献,搜索用时 531 毫秒
1.
2.
3.
近年来,利用分生组织培养,快速繁殖草莓无病毒苗的技术,已普遍受到国内外人们的重视,无病毒苗的利用也越来越广泛。我国利用草莓茎尖培养无毒苗也获成功,并开始在生产上大面积应用。 草莓无毒苗培养有三个阶段,即草莓茎尖培养成脱毒苗;利用指示植物叶片嫁接方法检测和鉴定病毒;得到无毒苗,在无毒条件下快速繁殖。 相似文献
4.
5.
章姬草莓无病毒苗快速繁殖配套技术 总被引:1,自引:0,他引:1
介绍了章姬草莓匍匐茎快速繁殖生产用无病毒苗的方法,具有繁殖系数高,减少病毒病的再感染和传播,幼苗健壮,保持品种特性和果实品质的优势;分析了影响章姬草莓匍匐茎发生的条件和匍匐茎生长发育的特点;提出了章姬草莓匍匐茎快速繁殖无病毒苗技术所包括的苗床选择与整理、母株选择与定植、繁殖田间管理和繁殖苗出圃起苗方法等配套技术。 相似文献
6.
草莓无病毒苗产量较普通草莓苗提高3 0 %左右 〔1〕,而且无病毒植株抗性强、果实品质好。国内草莓脱毒多采用茎尖培养技术 ,通常其脱毒率仅为 60 %~ 80 %〔2〕,采用花药培养技术 ,脱毒率为 94%~ 1 0 0 % 〔3〕,获得的植株虽有变异 ,但仅占 2 %左右。 2 0 0 0~ 2 0 0 1年 ,我们对近年新引进的草莓品种进行了花药培养脱毒试验 ,以期为其无病毒化栽培提供更有效的繁苗技术。1 材料与方法 供试草莓品种为鬼怒甘、幸香、五丰二号、美香莎、吐德拉、西班牙 1 1号 6个品种。 夏季 ,从田间采取供试草莓品种花蕾 ,用醋酸洋红染色、压片 ,在… 相似文献
7.
无病毒草莓丰香(Fragaria ananassa Duch.cv.Fengxiang)离体试管苗具有光合能力,但其光合作用受培养基中的蔗糖浓度、培养光强及培养容器内CO2浓度的影响。在无蔗糖或含有较低浓度蔗糖的培养基上和较高的培养光强下生长的试管苗,其净光合速率(Pn)、光饱和点和表观量子效率(AQY)较高,光补偿点较低。生长有小苗的培养容器内的CO2浓度只有70-120μl·l-1,远远低于大气的CO2浓度。随着向培养容器中通入CO2浓度的增加,试管苗的Pn增加。培养6周试管苗的Pn高于培养3周的试管苗,培养容器内的CO2浓度6周培养的低于3周。 相似文献
8.
正传统草莓栽培因育苗带来的种苗种性退化、病毒病发生严重,致使草莓产量、品质严重下降,解决途径是必须建立无病毒种苗繁育体系:包括脱毒苗原种中心、脱毒原种苗生产骨干、脱毒苗生产育苗大户及脱毒苗技术推广体系等。通过脱毒原种苗大棚避雨育苗及促进花芽分化技术,可以解决主栽草莓品种‘红颊’发展瓶颈。通过生物农药及粘虫色板、性诱剂等绿色综防技术,达到草莓有机生产和绿色生产。通过集成石灰氮、有机质与日光利用等 相似文献
9.
草莓组培苗来源于优质草莓母本园采集的优质、无病虫害、抗逆性强的匍匐茎茎尖,经过初代培养、继代培养和生根培养,再进行炼苗移栽。阐述了草莓组培苗炼苗移栽的一系列栽培管理技术,包括炼苗、选苗,基质的处理,栽植技术要点,移栽后的肥水、病虫害防治等。 相似文献
10.
11.
M. W. Sutton Dorothy L. Robinson G. R. Dixon F. Wilson 《The Journal of Horticultural Science and Biotechnology》2013,88(3):479-487
SummaryVirus-tested stocks of Narcissus pseudonarcissus cv. Carlton were compared in the field with commercial stocks which were at least 97% free from plants with visually obvious virus symptoms. Despite planting bulbs of similar weight and apparently uniform anatomical structure the number of growing points in the comparative stocks sometimes differed depending on the locality in which the bulbs were produced. Consequently, leaf number in year one, which is related to the number of growing points was used to adjust flower and bulb yield. After adjustment where necessary, the mean bulb yield of virus-tested stocks was 9-20% greater than that of commercial stocks. Increased bulb yield of virus-tested compared with visually healthy commercial stocks resulted from greater mean bulb weight. Virus infection apparently had no effect on bulb number. Virus-tested stocks flowered three to four days earlier than the commercial stocks but no clear differences in flower quality or number were detected. 相似文献
12.
13.
CHEN Shi-lin HUANG Sheng-dong XU Zhi-yun MEI Ju ZHU Jia-lin ZHANG Bao-ren 《园艺学报》2001,17(12):1168-1171
AIM: To generate the angiopoietin-1 recombinant adenovirus for the further studies about adenoviral mediated angiopoietin-1 gene transfer in ischemic myocardium and its effect on the development of neoangiogenesis. METHODS: Angiopoietin-1-PAxCAwt cosmid DNA and adenoviral DNA-TPC were cotransfected to 293 cells by the use of calcium phosphate precipitation method. All recombinant adenoviruses were propagated and titrated in 293cells, purified by cesium chloride density purification, dialyzed, and stored at -70 ℃. RESULTS: The result shows that the direction of the insert in the cosmid is correct and the replication-deficient angiopoietin-1 recombinant adenovirus was generated efficiently by COS/TPC homologous recombination, with the titers of 5.6×1011 pfu/L. The viral stocks were demonstrated to be free of replication-competent wild type adenoviruses. The virus stocks in high titer were harvested in our experiment. CONCLUSION: The COS/TPC is an efficient method to prepare recombinant adenovirus and the angiopoietin-1 recombinant adenovirus could be further used in gene therapy. 相似文献
14.
通过对12种国内外苹果新砧作中间砧嫁接青富13,在树体生长、开花坐果、产量、品质、干周比值等方面进行比较,筛选出Mark、75-9-35、S19、75-7-1等几种优于M26的新矮化砧。 相似文献
15.
16.
XIAO Xiao-ping ZHOU Tian-hong GONG Jun-yuan YANG Dan-li YUN Yue-ming LI Yue-qin ZOU Yi ZHANG Xin LI Hong-jian 《园艺学报》2010,26(12):2378-2382
AIM: pUL23 is a protein encoded by human cytomegalovirus, which inhibits self propagation of the virus. The study was to investigate the function of pUL23 protein encoded by human cytomegalovirus and reveal the mechanism which inhibits propagation of the virus itself.METHODS: We screened a host proteins interacting with pUL23 from human embryonic kidney cDNA library using the yeast two-hybrid assay. GST-pull-down and immunoprecipitation techniques were applied to study the physical interaction between them in vitro and in vivo, respectively.RESULTS: We confirmed the interaction between pUL23 and IGFBP4 by pull-down and immunoprecipitation technology.CONCLUSION: These results might provide important information to the function of pUL23 in regulating self-reproducting. 相似文献
17.
18.
对黄茉莉的育苗技术与矮化盆栽技术进行了研究。结果表明:黄茉莉能够用压条繁殖及穴盘扦插繁殖育苗。压条繁殖成活率高,但繁殖系数小;而穴盘扦插育苗的繁殖系数大,根系发达,苗木健壮,成苗整齐,最好的育苗时期在4、5月。采用一年3次修剪的方法,能够很好地解决藤本黄茉莉盆栽矮化的问题。 相似文献
19.