泥胡菜的组织培养及高效无性系建立(英文)

[Objective] The research aimed to study the rapid propagation technology and establish effective clone of Hemistepta lyrata Bunge. [Method] With tender stem of Hemistepta lyrata Bunge as material, the conditions needed in calluses induction and differentiation, adventitious bud differentiation and radication, test tube seedling cutting and transplantation were studied. [Result] The results showed that the optimum medium for granulated calluses induction from tender stem was MS+BA 0.3 mg/L+2,4-D 1-1.5 mg/L, for granulated calluses and adventitious bud differentiation was MS+AgNO3 1.5 mg/L +BA 0.4 mg/L +NAA 0.1 mg/L. 1/2 MS+IAA 0.6 mg/L was suitable for test tube seedling rooting and regeneration, and cinder was used as transplantation and cutting substrate. [Conclusion] This study will provide the scientific reference for choosing the feasible medium in tissue culture of Hemistepta lyrata Bunge.     

Induced in vitro Expression of Human Lactoferrin in Goat Mammary Gland Epithelial Cell

[Objective]The aim of this study was to explore the technical system of induced expression in vitro of goat mammary gland epithelial cell,and evaluate expression efficiency of mammary gland specific vector and foreign protein at the cell level.[Method]Goat mammary gland epithelial cell transfected by human lactoferrin gene was inducted by culturing in DMEM/F12 medium supplemented with 5 mg/L insulin,5 mg/L prolactin and 1 mg/L hydrocortisone.Supernatant was collected per 6 hours and concentrated.Expression situation of foreign protein were detected by SDS-PAGE and Western blotting.[Result]There was target protein expression in the induced culture medium,which molecular weight was about 42 kD.[Conclusion]The method used in this study can induce goat mammary gland epithelial cell to express foreign gene,it lays a foundation for researching heterologous expression of foreign gene and producing mammary gland bioreactor.     

甘蓝型油菜DH系培养技术优化(英文)

[Objective] The aim of this study is to reveal the disinfectants and disinfection methods,medium components,and embryoid culture method on dissociative microspore culture.[Method] B5 as basic medium appended with different concentrations of sucrose,agar and different hormone combinations was used to optimize the culture technique for DH line in Brassica napus L.[Result] Both the 15 min disinfection of NaClO containing 5% Cl-and 10 min disinfection of 0.1% HgCl2 performed well in disinfection and subsequent embryo production;in the extraction process of dissociative microspores,B5 medium containing 2% sucrose could achieve a good embryo production effect;under dark condition microspores were firstly incubated at 32 ℃ 5-7 d,then at 25 ℃ 12-15 d,and finally transferred to 25 ℃ oscillator(60-65 r/min)for 3-7d,when the embryoid would become full ripeness;1/2MS medium appended with 1.2% agar,0.02% NAA,2.0 mg/L 6-BA,3.4 mg/L AgNO3 and 2% sucrose was helpful for embryoid differentiation and plantlet generation,presenting low degree of browning and slight vitrification.[Conclusion] The results may facilitate DH Line in rape production in large scale and high efficient transformation system.     

Optimization of Culture Techniques for DH Line in Brassica napus L.

[Objective] The aim of this study is to reveal the disinfectants and disinfection methods,medium components,and embryoid culture method on dissociative microspore culture.[Method] B5 as basic medium appended with different concentrations of sucrose,agar and different hormone combinations was used to optimize the culture technique for DH line in Brassica napus L.[Result] Both the 15 min disinfection of NaClO containing 5% Cl-and 10 min disinfection of 0.1% HgCl2 performed well in disinfection and subsequent embryo production;in the extraction process of dissociative microspores,B5 medium containing 2% sucrose could achieve a good embryo production effect;under dark condition microspores were firstly incubated at 32 ℃ 5-7 d,then at 25 ℃ 12-15 d,and finally transferred to 25 ℃ oscillator(60-65 r/min)for 3-7d,when the embryoid would become full ripeness;1/2MS medium appended with 1.2% agar,0.02% NAA,2.0 mg/L 6-BA,3.4 mg/L AgNO3 and 2% sucrose was helpful for embryoid differentiation and plantlet generation,presenting low degree of browning and slight vitrification.[Conclusion] The results may facilitate DH Line in rape production in large scale and high efficient transformation system.     

甘蓝型油菜DH系培养技术优化(英文)

[Objective] The aim of this study is to reveal the disinfectants and disinfection methods,medium components,and embryoid culture method on dissociative microspore culture.[Method] B5 as basic medium appended with different concentrations of sucrose,agar and different hormone combinations was used to optimize the culture technique for DH line in Brassica napus L.[Result] Both the 15 min disinfection of NaClO containing 5% Cl-and 10 min disinfection of 0.1% HgCl2 performed well in disinfection and subsequent embryo production;in the extraction process of dissociative microspores,B5 medium containing 2% sucrose could achieve a good embryo production effect;under dark condition microspores were firstly incubated at 32 ℃ 5-7 d,then at 25 ℃ 12-15 d,and finally transferred to 25 ℃ oscillator(60-65 r/min)for 3-7d,when the embryoid would become full ripeness;1/2MS medium appended with 1.2% agar,0.02% NAA,2.0 mg/L 6-BA,3.4 mg/L AgNO3 and 2% sucrose was helpful for embryoid differentiation and plantlet generation,presenting low degree of browning and slight vitrification.[Conclusion] The results may facilitate DH Line in rape production in large scale and high efficient transformation system.     

基于均匀设计优化牛皮杜鹃嫩叶直接再生芽苗及植株再生体系(英文)

[Objective] The experimental was aimed to screen the optimum regeneration shoot induction media and rooting media for tender leaves of Rhododendron chrysanthum Pall.[Method] The tender leaves of Rhododendron chrysanthum Pall were taken as explants to select the optimum bud induction media and rooting media through uniform design and the screening results were verified.[Result] The optimum media for regeneration shoot of Rhododendron chrysanthum Pall contained 1/4 MS,3.70 mg/L ZT, 0.02 mg/L IAA and 1.00 mg/L KT and its induction rate was 95.5% and the rooting media contained modified MS, 0.10 mg/L IAA and 0.07 mg/L NAA and its rooting rate was 98%. [Conclusion] Through this experiment, regeneration systems for regeneration shoot and regenerated plant from tender leaves of Rhododendron chrysanthum Pall were created successfully.     

舟形藻的污水培养及条件优化(英文)

[Objective] This study was to improve the biomass of Navicula tenera, and thus to provide reference for achieving the industrial production of Navicula tenera. [Method] The feasibility of using sewage to cultivate Navicula tenera was preliminarily investigated based on the consideration of regional characteristics; and a series of culture conditions including the nutrient source of nitrogen(N), phosphorus(P), iron(Fe), silicon(Si) and the salinity in medium for culturing Navicula tenera, were optimized by single factor test and orthogonal design. [Result] The optimized conditions for cultivating Navicula tenera using sewage are as follows: the water from Xiaoerlou Artificial Lake of Nanjing University of Technology as basic solvent; 360 mg/L urea; 150 mg/L N2HPO4·12H2O; 50 mg/L ferric citrate; 2 000 mg/L Na2SiO3·9H2O; 2.0 mol/L salinity. Navicula tenera was strongly adaptive to sewage and could well uptake the nutrient sources in the sewage. Under the optimized conditions, the culture cost decreased, and meanwhile the biomass of Navicula tenera reached 4.766 g/L which is 3.57 multiples over original medium and 1.9 multiples over optimized medium No. 1. [Conclusion] This study laid a foundation for the combination of culturing Navicula tenera in large scale and sewage treatment.     

Research on Rapid Propagation of Gongshui Pomelo by Tissue Culture

[Objective] This study aimed to investigate the optimal medium and hor-mone combinations for efficient rapid propagation of Gongshui pomelo and analyze key technical measures in the tissue culture process. [Method] Stem tips and stem segments with buds were col ected from four varieties of pomelo adult trees as explants, to investigate the main effect and key regulatory factors of vegetative organs and tissue culture explants and to propose a series of measures to prevent and control microbial contamination. Final y, an efficient rapid propagation technology system of Gongshui pomelo was established. [Result] Spring shoot explants contained large amounts of auxin, cytokinins, gibberel ins and other growth regulators, which could be used for tissue culture with high bud generation rate and rapid growth. Different conditions led to various culture results. Specifical y, mature pomelo seeds should be generated on semisolid 1/2MS medium and transferred to solid MS medium for incubation. The propagation coefficient of stem segments with axillary buds was greater than that of stem tips, exhibiting significant differences. In ad-dition, the optimal hormone combination was 6-BA 0.5 mg/L ＋ NAA 0.5 mg/L, which significantly promoted the induction and differentiation of adventitious buds. [Conclusion] This study provided basis for basic research, production and application of pomelo germplasm resources.     

极度濒危植物百山祖冷杉水培繁殖(英文)

[Objective] The experiment aimed to explore the influences of phytohormones (ABT and IAA) and nutrient solution on rooting of Abies beshanzuensis M.H.Wu by water cultured medium. [Method] The Abies beshanzuensis M.H.Wu were treated by water (CK), 10 mg/L ABT+ water, 10 mg/L IAA+ water, 10 mg/L ABT+ hoagland solution, 10 mg/L IAA+ hoagland solution, then the rooting process was observed and the formation rate of callus, rooting rate, number of rooting, and root length were investigated and analyzed. [Result] ABT and IAA had obvious influences on callus induction, rooting rate and the number of root of Abies beshanzuensis M.H.Wu by water culture, so they were suitable to be used in water propagation of Abies beshanzuensis M.H.Wu. The treatments of phytohormones had no regular influences on the longest root length and average root length. The nutrient solutions would not generate obvious influence on propagation of Abies beshanzuensis M.H.Wu at firstly stage, but they generated influence on root growth after rooting. [Conclusion] The research provided new ideas for propagation of Abies beshanzuensis M.H.Wu, which could make it out of endangerment situation quickly.     

Experiment on Tissue Culture Technique of Saposhnikovia divaricata （Turcz.） Schischk

The study aimed to optimize the induction and differentiation medium by exploreing different tissue culture of Saposhnikovia divaricata （Turcz.） Schischk. In tissue culture with the root, stem segments, young leaf, cotyledonary node and axillary bud of Saposhnikovia divaricata （Turcz.） Schischk as explants, a lot of plantleles were obtained and the corresponding plant regeneration-system was established. The results showed that when use MS＋1.0 mg·L^-1 6-BA＋0.2 mg·L^-1 NAA as callus induction medium, the cotyledonary node had the highest bourgeon rate, and its callus was better than any others; MS＋2 mg·L^-1 6-BA＋0.4 mg·L^-1 NAA was the best adventitious buds induction medium, and the best adventitious buds induced condition was 3% sucrose as carbon source, illumination for 12-14 h·d^-1 and pH 5.8, The best rootage medium was 1/2 MS＋0.5 mg·L^-1 NAA.     

蓝靛果优良单株组培快繁技术的研究

[目的]对蓝靛果优良单株组培快繁技术进行研究。[方法]以蓝靛果几个优良单株为材料,对其组培快繁中的初代、继代和生根培养基及移栽基质进行筛选。[结果]与ZT相比,6-BA是较适合蓝靛果组培的细胞分裂素;改良MS＋6-BA1.0mg/L＋IBA0.2mg/L是较适合蓝靛果的初代和继代培养基;改良MS＋IBA1.5mg/L是较适合蓝靛果生根的培养基,生根培养30d,生根率达100%;较适合蓝靛果组培苗移栽的基质类型是腐殖土与珍珠岩体积比为1∶1的基质,移栽30d后的成活率达95%。[结论]为快速繁育蓝靛果优质苗木,建立工厂化育苗技术体系,进而实现规模化生产提供依据。     

百蕊草愈伤组织培养影响因素研究

[目的]对影响百蕊草愈伤组织培养的因素进行研究。[方法]以百蕊草幼嫩枝条和叶片为外植体,研究不同浓度6-BA、NAA、2,4-D或其组合,碳源以及pH等因素对百蕊草愈伤组织生长的影响。[结果]3种植物生长调节剂和碳源对愈伤组织的生长都有促进作用,对愈伤组织诱导生长的培养基最佳组合为MS+6-BA 1 mg/L+NAA 0.15 mg/L+2,4-D 0.1 mg/L,碳源中蔗糖显著促进了百蕊草愈伤组织的增长,以30 g/L的蔗糖为最佳;pH 5.8~6.0有利于愈伤组织的诱导和生长。[结论]该研究为后续研究百蕊草细胞悬浮培养体系的建立提供材料。     

地涌金莲的离体培养与快速繁殖技术研究

[目的]研究地涌金莲（Musella lasiocarpa）的离体培养与快速繁殖技术。[方法]以地涌金莲吸芽为外植体,诱导不定芽分化、增殖和生根。[结果]适宜不定芽增殖的培养基为改良MS＋6-BA3.0mg/L＋NAA0.3mg/L＋AC2.0g/L＋Vc0.1g/L＋蔗糖30.0g/L＋琼脂8.0g/L,增殖系数为4.89;适宜生根的培养基为1/4改良MS＋IBA0.5mg/L＋蔗糖20.0g/L＋琼脂8.0g/L,生根率达100.00%,平均生根数4.60条,平均根长3.40cm;幼苗移栽成活率达91%。[结论]为大面积推广应用地涌金莲奠定了基础。     

绿玉树茎段组织培养再生体系的建立（摘要）

[目的]研究绿玉树茎段组织培养再生苗的条件,确定各培养阶段的最佳培养条件,为绿玉树组培苗工厂化生产和相关研究提供参考。[方法]以绿玉树茎段作为外植体试验材料,研究了不同培养基对萌芽率、增殖倍数、生根率的影响。[结果]萌芽培养最佳的诱导培养基为1/2MS＋NAA0.02mg/L＋6-BA1.0mg/L,分化率为89.7%;继代培养最佳培养基为1/2MS＋NAA0.02mg/L＋6-BA0.60mg/L＋AD3.0mg/L,增殖倍数为5.70;生根培养最佳培养基为1/2MS＋NAA0.40mg/L＋IBA0.4mg/L,生根率达100%,移栽成活率达80%。[结论]试验初步确定了绿玉树茎段组织培养的生长条件。     

猕猴桃组培苗生根培养的研究

[目的]为建立和完善猕猴桃快速繁殖体系提供理论依据。[方法]以美味猕猴桃无根组培苗为试材,研究培养基、IBA浓度和活性炭对其生根的影响。[结果]1/2MS培养基是最适合诱导猕猴桃组培苗生根的基本培养基,生根率、平均生根数分别是MS培养基的5.05、6.46倍。当IBA浓度为1.0mg/L时,猕猴桃组培苗的生根率为84.4%,生根数为3.82条/株,根平均长度为1.96cm,且植株生长健壮。活性炭对猕猴桃组培苗生根有明显的促进作用,当培养基中加入0.3%的活性炭时,猕猴桃组培苗的生根率达95.6%,生根数达4.53条/株,根平均长度达2.67cm。[结论]猕猴桃组培苗最适宜的生根培养基为1/2MS培养基+IBA1.0mg/L+0.3%活性炭。     

金花茶离体培养体系的建立

[目的]通过愈伤组织发生途径建立金花茶(Camellia nitidissima)的离体培养体系,为金花茶的快速繁殖和种质资源保存提供理论和技术支持.[方法]在金花茶种子萌发阶段以沙子替代培养基进行无菌萌发,以其成熟植株的茎尖、茎段和叶片为外植体,在WPM培养基上添加不同种类和浓度激素进行愈伤组织诱导、愈伤组织分化及生根培养.[结果]金花茶成熟种子去壳、去皮、取出胚乳后在添加无菌液的湿润沙子中培养,平均萌发率为95.40%,平均萌发时间为19.10 d;WPM+2.00 mg/L 6-BA+0.50 mg/L 2,4-D是金花茶子叶、胚轴愈伤组织诱导的适宜培养基;WPM+2.00 mg/L 6-BA+0.10 mg/L NAA是愈伤组织分化的适宜培养基,分化系数为4.56;1/2WPM+0.50~1.00 mg/L IBA是金花茶生根的适宜培养基,生根率为45.40%~54.00%,生根时间为19.80~20.90 d.[结论]金花茶离体培养可通过胚轴诱导产生愈伤组织进而分化成完整植株.     

明日叶的组织培养技术研究

[目的]研究明日叶的组织培养技术。[方法]以明日叶种子为材料进行无菌萌发,筛选增殖培养和生根培养时的最佳激素配比。[结果]明日叶的最佳增殖培养基为MS+1.0 mg/L 6-BA+0.001 mg/L TDZ+0.1 mg/L NAA,试管苗增殖系数为4.45;最佳生根培养基为1/2MS+1.0 mg/L IBA,生根率可达90%。[结论]为明日叶的工业扩大化生产提供科学依据。     

兔眼蓝莓丛芽诱导及生根研究

[目的]研究兔眼蓝莓丛芽的诱导及生根培养。[方法]以WPM培养基为基本培养基,研究不同浓度激素组合、光照强度、活性炭对兔眼蓝莓丛芽诱导及壮苗生根的影响。[结果]在2 000～3 000 Lx光照强度下,WPM+2.0 mg/L ZT+0.5 mg/L IBA培养基的丛芽诱导效果最佳,增殖系数达8.0;兔眼蓝莓的最佳壮苗生根培养基为WPM+0.5 mg/L IBA,此时生根率可达80.5%;活性炭对兔眼蓝莓组培苗的生根有抑制作用。[结论]该研究为实现蓝莓的工厂化、规模化生产提供了技术支持。     

激素对水仙组培苗生根的影响

[目的]确定水仙组培苗小鳞茎生根诱导的适宜激素种类和水平。[方法]以水仙栽培品种Fortissimo的组织培养小鳞茎为试验材料,以1/2MS为基本培养基,设计1.0、0.5、0.10、.05 mg/L 4个NAAI、BA浓度,研究激素对水仙组培苗生根诱导的影响。[结果]添加0.1mg/L NAA或0.1 mg/L IBA培养基处理的小鳞茎根生长健壮,生根诱导率高,与其他处理存在显著差异(P<0.05);添加0.05 mg/L IBA处理的根生长比较细短;添加1.0 mg/L NAA或0.5 mg/L IBA处理的小鳞茎生长较快,但对根的诱导效果不明显。[结论]在1/2MS培养基中,加入0.1 mg/L NAA或0.1 mg/L IBA均对水仙组培苗的生根诱导有显著促进作用。     

球根海棠叶离体培养中培养基配方的筛选

[目的]筛选球根海棠叶培养中不同阶段的培养基配方。[方法]通过组织培养试验,从接种、继代增殖和生根培养3个阶段对球根海棠叶离体培养中的培养基配方进行筛选。[结果]在Ms＋6-BA1．00mg／L＋NAA0．20mg／L＋Ade5．00mg／L的培养基上接种诱导分化丛生芽,诱导成芽率达100％,在诱导分化培养基中添加6-BA有利于芽的形成,在配方中添加Ade能促使诱导;在MS＋6．BA0．10mg／L＋NAA0．01mS／L的培养基上进行增殖,增殖系数高达40,且丛生芽整齐、健壮,最适用于生产;在1／2MS＋IAA0．80mg／L培养基上生根壮苗,生根时间短、根系位置适宜、根系条数偏多,最为理想。[结论]筛选出了球根海棠叶离体培养时诱导阶段、增殖阶段和生根阶段的最佳培养基配方：在MS＋6-BA1．00mg／L＋NAA0．20mg／L＋Ade5．00m∥L的培养基上接种诱导分化丛生芽,然后在Ms＋6-BA0．10mg／L＋NAA0．01mr／L的培养基上快速增殖,在1／2MS＋IAA0．80mg／L培养基上生根壮苗．再出瓶培养成生产用苗．