不同复合基质栽培对仙客来生长的影响

用不同复合基质对仙客来进行基质栽培试验.结果表明,复合基质显著促进了仙客来根系的生长,增加了冠径和球茎大小.其中,以草炭 珍珠岩 蛭石=6∶3∶1的复合基质栽培效果最好.     

上海市盆花仙客来品种群花部性状的观察与系统分析

花部性状是盆花仙客来的主要观赏性状,由香气、花色、瓣形与花形等因素构成。本文提出简明的品种特性记载方案是将上述各项特性因素分别规定了简明的文字与代号。依香、色、瓣、型的顺序组成一花株的记载名称或代号。这对选留育种工作中的品种整理与品种特性记载均是有用的。     

仙客来栽培的改进措施

摘要本试验以4个不同播种期的仙客来生长开花情况,从中选择出较传统生产方法适当推迟的播种期,对植株加强管理,结合GA_3处理幼蕾和花梗,达到提早开花,且开花整齐,能使大部分植株在春节前供应市场,缩短栽培时间,减低生产成本,且不需增添设备和投资。在目前条件下可以在生产栽培中推广应用,以提高经济效益和出口创汇。     

仙客来的培育技术

简要介绍在温室内培育仙客来当年开花的方法及有关管理措施。     

利用花粉管通道法将查尔酮合酶基因导入仙客来

查尔酮合酶(chalcone synthase—A,CHSA)是花色素合成途径中的一个关键酶,它在植物中表达的量可能影响花的颜色。本项目从矮牵牛(Petunia hybrida)特定发育阶段的花瓣的cDNA中,克隆到查尔酮合酶基因CHSA,插入到含有花椰菜花叶病毒CaMV35S启动子的植物中间表达载体pBI12l和pWM101中,首次通过原位生殖系统导入法(具体采用花粉管通道法)转化仙客来,成功地得到4400余粒仙客来转化种子,8株白花植株的个别花瓣出现了黄斑或略显黄色,甚至个别花瓣变成了黄色花瓣：3株白花植株的个别花瓣一半变成了桃红色(二乔),甚至整个花朵完全变成了桃红色。转基因仙客来经PCR检测呈阳性。     

仙客来组织培养研究进展

对仙客来愈伤组织培养、继代生根培养、体细胞胚胎发生和抗褐化方面的研究做了较为详细的综述,并提出其进一步的研究方向,旨在为以后的相关工作提供参考。     

干旱区荒漠梭梭柽柳蒸腾耗水对比分析

[目的]在克拉玛依造林碳汇基地外围,对比分析梭梭和柽柳蒸腾耗水的差异性.[方法]使用包裹式茎流计(Flow4)对梭梭(Haloxylon persicum)和柽柳(Tamarix elongata)枝液流动态进行了监测.对液流速率和枝直径进行相关性分析和回归分析.[结果]梭梭和柽柳枝液流速率同枝直径达到显著相关,可分别使用幂函数和指数函数进行拟合.在1.0～3.0 cm的枝直径范围内,柽柳的液流速率大于梭梭,液流速率均随枝直径的增大呈减小,液流速率的差异在减小.[结论]在1.0～3.0 em的径级范围内梭梭抗旱能力强于柽柳,随着植株的生长梭梭和柽柳抗旱能力增强,柽柳抗旱能力同梭梭的差距逐渐变小.     

低能离子注入对仙客来幼苗生长发育的影响

以仙客来种子为材料,研究了不同剂量的N＋注入对仙客来种子发芽势、发芽率、成苗率的影响。结果表明：随着N＋注入剂量的增加发芽势和发芽率的变化趋势为先降低后升高再降低,表现为＂马鞍型＂曲线,成苗率在低剂量时与发芽率相接近,在高剂量时成苗率明显降低。     

Study on Effects of Two Kinds of Auxin in vitro Regeneration of Cyclamen

Cyclamen leaves and petioles explants were cultured on MS media supplemented with different concentrations of 2, 4-dichlorophenoxyacetic acid (2, 4-D) or 1-naphthaleneacetic acid (NAA) to induce callus. The effect of 2, 4-D on shoot regeneration was also studied. Either in media containing 2, 4-D or in media containing NAA, callus was observed, but the quality or quantity of callus induced by 2, 4-D or NAA were different. The callus induced by 2,4-D was white, compact and having powerful multiplication capacity. The callus was inclined to browning then was poorly organogenetic. While the callus induced by NAA was yellowish in appearance. It was pultaceous and proliferated bradytelicly. The callus usually can give rise to many shoots. But the frequency of inducing callus of 2, 4-D is higher than that of NAA. The regenerative plantlets derived from the callus respectively induced by 2, 4-D or NAA were transferred into rooting medium. The frequency of rooting were no difference.     

Competition,spatial pattern,and regeneration of Haloxylon ammodendron and Haloxylon persicum communities in the Gurbantunggut Desert,Northwest China

Competition, spatial pattern, and regeneration are important factors affecting community composition, structure, and dynamics. In this study, we surveyed 300 quadrats from three dunes(i.e., fixed dunes, semifixed dunes, and mobile dunes) in the Gurbantunggut Desert, Northwest China, from late May to early June in 2021. The intraspecific and interspecific competition, spatial pattern, and regeneration of Haloxylon ammodendron and Haloxylon persicum were studied using the Hegyi competition index a...