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报春花是报春花科报春花属植物的统称,与杜鹃花、龙胆花并称三大高山花卉。本属约有500种,主要分布于北半球温带及高山地区,我国有290余种,喜马拉雅山和横断山脉是现代分布中心。绚丽多姿的报春花是“春天的使者”,在西南山地中,随着海拔升高各色报春花从早春二月到盛夏七月,不同种类的报春花次第开放,形成了亚高山草甸上最绚丽多姿的植物(图1)。报春花属中最具吸引力的一组花当属灯台报春组,灯台报春是报春花属的灯台报春组Sect.Proliferae Pax植物的统称,是报春花里最高大的一类,灯台报春直立的花葶高高向上,具有多轮伞形花序,因形似一轮轮的灯台而得名,花色多样,常呈紫、紫红、橘红、橙黄、黄、淡黄及白色。 相似文献
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采用不同浓度的绿色植物生长调节剂６,７号,在报春花和瓜叶菊播种幼苗上喷施,对幼苗的苗高,地径及根冠比等幼苗品质指标进行了测定,同时也测定了幼苗叶片面积,干鲜比和叶绿素含量等生理指标。喷施效果报春花以喷施绿色植物生长调节剂６号１０（１０＾－６）效果最佳,瓜叶菊幼苗以喷施绿色植物生长调节剂６号３０（１０＾－６）效果最佳,苗高和地径增加,叶面积和叶绿素含量等指标也较对照有所提高,喷施绿色植物生长调节剂有 相似文献
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报春花,以它的迎风傲雪向人们传递春天到来的信息,所以被人们比作春天的信使。报春花属报春花科,全世界有约500余种,我国就有300余种。国产报春花栽培历史悠久,已成为早春的主要盆栽植物。作为观赏花卉,按其生境,可分为林内阴湿型、疏林透光型、林缘草甸型和高山冷湿型等类型。当今,国产报春花属植物的流行种类有如下各种： 相似文献
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在报春花的栽培过程中,由于受病虫害的浸染,不仅使植株的生长受阻,而且产生各种各样的症状,造成报春花的观赏价值和商品价值降低,因此在报春花的日常养护过程中,需加强对病虫害的预防和治疗,以减少损失。一、报春花幼苗猝倒病 猝倒病主要发生在报春花的幼苗期,发病部分多在幼茎基部、初期病部呈水渍斑,逐渐变为淡褪色至褪色, 相似文献
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本文分析总结了西藏色季拉山报春花属植物的资源价值,并揭示了目前色季拉山报春花属植物资源的保护及利用现状,最后对其未来的开发利用空间进行前景展望,指出开展色季拉山报春花属植物资源的深入研究具有重要的科学价值和社会意义。 相似文献
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对黑龙江省森林植物园内引种的翠南报春（Primula sieboldii E. Morren）的花期、花部形态、访问昆虫种类、访问行为及访花频率等进行观察,同时对其花粉活力、柱头可授性、花粉胚珠比（P/O）及繁育系统进行了检测。结果显示：翠南报春是典型的花柱二型植物,在同一居群中同时具有长花柱（Pin型）和短花柱（Thrum型）两种花型;花期在5月份;开花后3 d内花粉活力和柱头可授性均较强;杂交指数OCI值为3或4,P/O比值幅度244 ~ 361,按照OCI值,其繁育系统属于异交、部分自交亲和、需要传粉者;依据P/O数据,其繁育系统属于兼性异交型。翠南报春的主要访花昆虫有：鳞翅目的绿带翠凤蝶（Papilio maackii M.）、黑纹粉蝶（Pieris melete M.）、草地螟（Loxostege sticticalis L.）、黑边天蛾（Haemorrhagia sp.）、金凤蝶（Papilio machaon L.）;双翅目的短腹管蚜蝇（Eristalis arbustorum L.）。天气晴朗时,10：00—15：00昆虫访花频率较高;阴雨天或气温骤降时,访花频率明显降低。 相似文献
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园林植物光合生理特征研究进展 总被引：1，自引：0，他引：1
园林植物光合生理特征研究是为解决环境生态问题,尤其是全球环境变化问题应运而生的一门学科,它结合园林植物生理学来分析生态学现象。植物学中最重要的生态学现象是光合作用,综述光合生理生态研究状况,以及不同因素对园林植物的光合生理生态的影响,为深入研究我国的园林植物光合生理生态资源提供参考。 相似文献
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S.J. Wellenslek 《Scientia Horticulturae》1981,15(1):93-95
Plants have been regenerated from anthers of Primula obconica frozen in liquid nitrogen for 5 minutes, and cultured on synthetic media. There were two modes of plant development, directly from pollen-embryos, and indirectly through the differentiation of callus. 相似文献
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When grown in a glasshouse, flowering in Primula vulgaris ‘Aalsmeer Giant’ (yellow) and ‘Ducat’ (blue) was delayed with increasing temperature from approximately 12°C to 18°C. In addition, size of the first open flower and the number of flowering axillary shoots decreased, whereas the number of leaves and leaf area increased with the temperature increase. All temperature responses were greater in ‘Aalsmeer’ than in ‘Ducat’.When grown in growth rooms at 9°C, flowering in P. vulgaris ‘Aalsmeer Giant’ (yellow) was inhibited compared with 15°C. However, when 9 weeks of 15°C was applied to plants grown for 9 weeks at 9°C, the inhibition was overcome; longer periods of 15°C being no more effective. This indicates than an early stage of flower formation, probably the initiation, in Primula vulgaris is inhibited by 9°C, and not the further development of the buds towards open flowers. 相似文献
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E. R. Moorhouse A. T. Gillespie A. K. Charnley 《The Journal of Horticultural Science and Biotechnology》2013,88(4):627-635
Aspects of the biology and control of vine weevil (Otiorhynchus sulcatus) on glasshouse pot plant species were investigated. In a natural situation, O. sulcatus preferred Primula and Cyclamen to Begonia, Impatiens and Campanula. The mean population size ranged from 0.4 larvae per pot for Campanula to 36.6 larvae per pot for Primula. The larval populations on all species were variable and differences were observed in species sensitivity to larval damage. All the Cyclamen plants showed significant signs of damage, whereas only 20% of the Primula plants were similarly affected, even though the mean larval population was 42% higher. Larval populations failed to develop on Campanula, Euphorbia, Hypoestes and Solanum following artificial egg infestation, while nearly 70% of the eggs applied to Cyclamen were recovered as larvae. Larval development on Impatiens and Cyclamen was compared, but no significant differences in larval number or weight were recorded. Significant differences in larval numbers and weight were observed on six Impatiens cultivars with survival from eggs and mean larval weight ranging from 84% to 58% and 38.4 to 27.4 mg respectively. Larval control using a prophylactic conidial drench of the entomogenous fungus, Metarhizium anisopliae, was very effective when conidia were applied at the higher rate of 1 x 109 conidia compost. Total control was recorded on five of the species examined and control on the other species exceeded 85%. The results achieved using the higher rate of M. anisopliae were consistently better than those achieved using the lower rate (5 x 10s conidia compost), but the difference in most cases was not significant. The results of these experiments demonstrate the potential of M. anisopliae as a microbial control agent for O. sulcatus on glasshouse ornamentals. 相似文献