排序方式: 共有75条查询结果,搜索用时 31 毫秒
21.
22.
23.
24.
外源硫酸铝调节八仙花花青苷组成和含量变化的分子生物学机制 总被引:1,自引:0,他引:1
25.
优良八仙花品种(Hydrangea serrata‘Preziosa’)的离体培养与快速繁殖 总被引:1,自引:0,他引:1
以八仙花当年生茎段为外植体,进行离体快速繁殖技术研究。结果表明:无菌芽诱导的适宜培养基为改良MS+BA1.0mg/L+NAA0.1mg/L+CH0.5g/L十蔗糖30g/L+琼脂粉6.0g/L,诱导率为97.2%;芽增殖的适宜培养基为改良MS+BA1.0mg/L+蔗糖30g/L+琼脂粉6.0g/L,增殖系数达6.1;生根的适宜培养基为1/2MS+IBA0.3mg/L+蔗糖20g/L+琼脂粉6.0g/L,试管苗在该培养基上根系生长良好,生根率达100%。 相似文献
26.
绣球SSR-PCR反应体系的建立与优化 总被引:1,自引:0,他引:1
为了建立适合绣球的SSR-PCR反应体系,采用正交设计L25(56)对影响SSR-PCR反应体系的5个主要因素(Mg2+、d NTPs、引物、DNA模板和Taq聚合酶)在5个水平上进行优化,筛选出每个因素的最佳水平,建立适合绣球的SSR-PCR反应体系。结果表明,20μL的SSR-PCR反应体系中,DNA模板用量为60 ng,Mg2+浓度为1.5 mmol/L,d NTPs浓度为0.3 mmol/L,引物浓度为0.4μmol/L,Taq聚合酶用量为0.8 U。扩增程序为:94℃预变性5 min;94℃变性1 min,最佳温度退火40 s,72℃1 min,33个循环;72℃延伸10 min,4℃保存。选用10个绣球品种对建立的SSR-PCR反应体系进行验证,结果表明该体系具有较好的稳定性和通用性。建立和优化的绣球SSR-PCR反应体系,为应用SSR分子标记技术开展绣球属植物遗传育种研究提供了理论依据和技术参考。 相似文献
27.
Elly Kesumawati Munetaka Hosokawa Takushi Kimata Tatsuya Uemachi Susumu Yazawa 《Scientia Horticulturae》2009
To determine the effect of light intensity on flower greening, the Japanese hydrangea phyllody (JHP) phytoplasma-infected hydrangea cultivars ‘Midori’, ‘Libelle’, ‘Rosea’ and ‘Madame E. Mouillere’ plants were grown under different shade conditions. In the first-year experiment, the results indicate that the flowers of the JHP-phytoplasma-infected hydrangea become green under shaded conditions (70% and 49% sunlight intensities). On the other hand, under full sunlight intensity (100% sunlight intensity), the flowers of ‘Midori’, ‘Rosea’, and ‘Libelle’ plants were blue, pink or white. To calculate the percentage of flower greening, inflorescences of these plants were separated and divided into individual flowers, and classified into four types by green-area ratio, calculated using Adobe Photoshop. Under shading with one sheet of cheesecloth (70% sunlight intensity), the inflorescences of ‘Midori’, ‘Libelle’ and ‘Madame E. Mouillere’ plants were composed of more than 40% completely green flowers (0.8 ≦ green-area ratio), whereas those of ‘Rosea’ plant had 0% completely green flowers. Under shading with two sheets of cheesecloth (49% sunlight intensity), the inflorescences of ‘Midori’, ‘Libelle’ and ‘Madame E. Mouillere’ plants had more than 75% completely green flowers; ‘Rosea’ plants had 28%. In the second-year experiment, under full sunlight intensity, ‘Midori’ plants had four types of flower depending on their green-area ratio, namely, completely blue or pink, pink-green, greenish and completely green flowers. Under shading with two sheets of cheesecloth, ‘Midori’ plants had more than 90% completely green flowers. The JHP-phytoplasma could not be identified by PCR analysis in flowers with a green-area ratio = 0 (completely blue/pink/white flowers). On the other hand, in flowers with a green-area ratio > 0, the JHP-phytoplasma was detected by PCR analysis. Thus, we conclude that shading enhances flower greening in hydrangea by increasing the JHP-phytoplasma concentration in the flowers. 相似文献
28.
为获得大量栎叶绣球的无菌苗,本研究以栎叶绣球‘雪花’(Hydrangea quercifolia’Snow Flake’)的叶片为试验材料,通过不同浓度的激素组合处理。结果表明,最适宜的愈伤组织诱导培养基为:MS+1.5 mg/L6-BA+0.2 mg/L NAA,出愈率约为80.7%;最适宜的不定芽分化培养基为:MS+2 mg/L 6-BA+0.1 mg/L IBA,诱导率约为90.3%;最佳的增殖培养基为:MS+2.5 mg/L 6-BA+0.1 mg/L IBA,增殖率约为5.2;最佳的壮苗培养基为:MS+0.5 mg/L 6-BA+0.15/0.2 mg/L IBA,幼苗平均高度约为4.57 cm;最佳的生根培养基为:1/2 MS+0.4 mg/L IBA,平均生根率约为88.3%,平均根长约为6.5 cm。本研究初步建立了栎叶绣球‘雪花’的再生体系,为其扩大繁殖和之后的遗传转化研究提供了帮助。 相似文献
29.
30.
为了延长八仙花切花瓶插寿命,以八仙花品种经典红为试验材料,比较分析了保鲜液不同pH值条件下,八仙花切花瓶插寿命及瓶插期间切花吸水、失水及水分平衡动态.结果表明:八仙花切花瓶插期间,pH=5的可利鲜处理,可有效维持花枝水分平衡,显著减缓花枝鲜重变化,使其瓶插寿命达10.4 d,最大花冠径增加率为6.8%.研究结果不仅获得了延长八仙花切花瓶插寿命的新技术,而且为同类切花瓶插寿命的研究提供了依据. 相似文献