堿基對比率 的英文怎麼說
中文拼音 [jiǎnjīduìbǐlǜ]
堿基對比率
英文
base-pair ratio-
In this study, the stem segments of new shoot with axillary buds of well - growth tetraploid black locust trees were used as explants. the effects of different basic mediums, different hormone kinds and their concentrations ratios, different sucrose concentrations on calli induction, buds differentiation and rooting in the process of establishment of high frequency regeneration system of tetraploid black locust were studied. on the base of high frequency regeneration system, the effects of various factors on transformation efficiency of badh mediated by agrobacterium tumefaciens were discussed in the light of gus histochemical assays
本實驗首先以生長良好的四倍體刺槐優株上當年生新梢的帶腋芽莖段為外植體，研究了在四倍體刺槐高頻再生體系的建立過程中不同基本培養基、不同激素濃度及其配比、不同蔗糖濃度對愈傷組織的誘導、芽的分化及生根的影響；然後在得到高頻再生體系的基礎上，通過農桿菌介導法轉化甜菜堿醛脫氫酶（ badh ）基因，以gus染色組織分析為依據探討了影響轉化效率的各種因素，建立了高效、可重復的基因轉化體系，為四倍體刺槐目的基因的導入打下了基礎。In order to study the effect of weak noise on the sound signal extraction of mouse ( mus musculus km ) inferior collicular ( ic ) neurons from environment, we examined the change in frequency tuning of neuron induced by a weak noise relative to 5 db below minimum threshold ( remt - 5 db ) of tone. 12 healthy adult mice ( 20 - 25 g, b. wt. )
本實驗旨在探討弱噪聲對小鼠（ musmusculuskm ）中腦下丘（ inferiorcolliculusic ）神經元聲信號提取的影響及其神經機制，我們選用相當于純音閾下5db的白噪聲（ whitenoise ） ，比較加入噪聲前後神經元頻率調諧曲線的變化和注射-氨基丁酸（ - aminobutyricacid ， gaba ）能受體拮抗劑荷包牡丹堿（ bicuculline ， bic ）后對該變化的影響。Were studied together with the reference strains of recognized rhizobium and bradyrhizobiwn species by performing polyphasic taxonomy, including numerical taxonomy, rep - pcr fingerprinting, 16s rdna pcr - rflp. the result show that : the growth rate of rhizobia isolated from the root nodules of pueraria spp. showed great diversity. ccbau41147 ccbau6110 k ccbau61096 and ccbau61095 were fast - growing strains, the single colony size was bigger than 1mm after 2 days incubated oq yma medium at 28 they can produce acid. the other strains were slow - growing strains, their single colony size was less than 1 mm after 7 days incubated on yma medium at 28. they can produce alkali
本研究以從我國四川、河南、安徽和湖南等地分離的32株葛藤根瘤菌為研究對象，以20株已知種的根瘤菌為參比菌株，採用數值分類、 rep - pcr指紋分析、 16srdnapcr - rflp指紋分析等現代根瘤菌分類技術，初步研究了葛藤根瘤菌的生物多樣性和分類地位，結果表明：葛藤根瘤菌在生長速率上表現出多樣性，菌株ccbau41147 、 ccbau61096 、 ccbau61101和ccbau61095生長較快， yma培養基上28培養2 - 3天後，單個菌落直徑大於1mm ，具有產酸能力，是快生型葛藤根瘤菌；其餘待測葛藤根瘤菌生長較慢， yma培養基上28培養7天後，單個菌落直徑小於1mm ，具有產堿能力，是慢生型葛藤根瘤菌。The genetic diversity of p. sibirica, which is represented by 98 individuals collected from all 5 subpopulations, investigated with rapd markers. 77 loci were selected by fourteen 10 - mer primers, of which 76 were polymorphic. the percentage of polymorphic loci ( ppb ) of five subpopulations was 70. 13 %, 77. 99 %, 62. 34 %, 67. 53 %, and 61. 04 % respectively
用rapd分子標記對叉毛蓬5個亞居群共98個個體進行了遺傳多樣性檢測， 14個10堿基寡聚核甘酸引物共檢測到77個位點，其中多態位點76個，多態位點比率為98 . 7 。分享友人