搜索结果: 1-9 共查到“农业基础学科 SP”相关记录9条 . 查询时间(0.203 秒)
通过简并PCR和TAIL-PCR技术从瓶霉Phialophora sp. G5菌株基因组DNA中克隆得到一个新的编码b-1,4-木聚糖酶的基因,命名为xyn11G5。该基因ORF全长879 bp,共编码292个氨基酸和一个终止密码子,前19个氨基酸为信号肽序列。将xyn11G5在毕赤酵母中进行分泌表达,重组蛋白经纯化达到电泳纯。酶学性质分析表明,该重组木聚糖酶最适温度为50℃,最适pH为5.0,在...
为了研究杀菌剂对甘薯致病菌Hypocrea sp. SP-4和Rhizopus stolonifer SP-1生长的抑制效果，本文从腐烂的甘薯块根中分离到的匍枝根霉SP-1（Rhizopus stolonifer SP-1）和Hypocrea sp. SP-4的孢子接种在含有不同杀菌剂浓度的PDA培养基上，在13℃和28℃条件下培养。同时也将2种孢子接种在甘薯块根上，进行培养观察。结果表明：2株真...
通过设计简并引物和构建基因组文库的方法从链霉菌Streptomyces sp.S9中克隆得到β-l,4-木聚糖酶基因xynBS9。该基因全长1 023 bp，编码340个氨基酸。将不带原基因信号肽编码序列的xynBS9以正确阅读框架克隆到表达载体pET-22b(+)上，并在大肠杆菌BL2l(DE3)中诱导表达。重组蛋白经硫酸铵分级沉淀和疏水柱纯化后达到电泳纯。酶学性质分析表明，重组木聚糖酶最适温度...
Characterization of an Alkaline Metalloprotease Secreted by the Entomopathogenic Bacterium Photorhabdus Sp. Strain EK1
alkaline characterization entomopathogenic nematode Heterorhabditis metall
2010/11/12
A purified alkaline protease from entomopathogenic bacterium Photorhabdus sp. Strain EK1
(PhPrtPI), a bacterium pathogenic for insects and is symbiotic with an Egyptian nematode of the genus Heterorh...
目的 对海绵共附生放线菌Streptomyces sp. A01059的发酵液进行研究，以获得有抗稻瘟病活性的化合物；方法 用乙酸乙酯对发酵液进行萃取，然后用活性追踪的方法对乙酸乙酯萃取物进行分析，最后使用制备液相获得相应的活性部位；结果 获得分子量为508和522的两个活性化合物；结论 本实验首次对放线菌Streptomyces sp. A01059的代谢产物进行分离研究，为稻瘟病的防治提供了新...
Aspect of the biology of Rastrococcus sp.（Hemiptera：Psuedococcidae）on Acalypha hispida in southern guinea savanna of Nigeria
Acalypha antenna instar Rastroccocus savanna stylet
2009/3/3
The biology and description of various developmental stages of the mealybug found on the green acalypha plant in Ogbomoso, Southern Guinea Savanna was evaluated. The study shows that the stylets o...
Evaluation of grain technological quality of X Triticosecale Wittmack with Aegilops sp. hybrids
triticale Aegilops sp. hybrids technological value
2008/11/19
Technological value of grain of new hybrid triticale lines achieved due to crossbreeding X Triticosecale Wittmack with Aegilops sp. was studied as compared to standard triticale varieties to select li...
Influence of water stress on growth, essential oil, and chemical compositionof herbs (Ocimum sp.)
Ocimum sp. water stress vegetative growth
2008/11/18
This work investigates the influence of water
stress on vegetative growth, essential oil, proline, total carbohydrates,
N, P, K, and protein contents of two species of an herb
plant ie Ocimum basil...
Variable light transmission through four polyethylene colours used for plantain Musa sp. AAB) fruits storage as influencing its postharvest and culinary qualities
eating quality plantain fruits polyethylene colours ripening weight loss
2008/11/10
Postharvest wastes of horticultural produce are enormous in Nigeria, requiring increasing efforts to reduce this spate. Therefore, colourless, blue, red and yellow polyethylene bags impregnated with o...