共查询到19条相似文献,搜索用时 622 毫秒
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基因工程在花卉遗传改良中的应用研究 总被引:5,自引:0,他引:5
对 1 0年来基因工程技术在花卉花色、形态、抗性、花期、瓶插寿命和花香等重要性状改良中的应用进行了综述 ,并对基因工程在花卉分子育种中的应用前景提出了一些见解 相似文献
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基因工程在花卉遗传改育中的应用研究 总被引:4,自引:0,他引:4
对10年来基因工程技术在花卉花色,形态,抗性,花期,瓶插寿命和花香等重要性状改良中的应用进行了综述,并对基因工程在花卉分子育种中的应用前景提出了一些见解。 相似文献
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百花山野生花卉资源及园林应用 总被引:10,自引:1,他引:9
朱红霞 《中国野生植物资源》2003,22(2):12-14
百花山野生花分资源丰富,有华北“天然植物园”之称。分析了百花山的植被状况,野生花卉的特点及园林应用,重点介绍了浅裂剪秋罗、金莲花、瞿麦、高乌头、翠雀、华北楼斗莱等20种观赏价值高的野生花卉资源特征、分布及其在园林中的应用,井介绍了4种野生花卉的繁育技术。以期引起园林工作者对野生花卉的重视,用野生花丰富园林植物的种类。 相似文献
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百花山景区野生花卉资源及其园林应用 总被引:1,自引:0,他引:1
我国拥有丰富的野生花卉资源,具有很大的园林应用潜能。通过对野生资源进行引种驯化栽培,培育出观赏价值高和适应性强的花卉新品种,从而达到丰富园林植物资源,更好地为城市园林建设服务的目标,这将成为人们未来研究的重点。通过对北京百花山景区野生花卉资源的实地调查和资料整理,报道了多种具有较高观赏水平和引种驯化潜力的野生花卉,并阐述了其在园林中的应用价值,同时提出了多种将我国野生花卉的资源优势转化为经济优势的有效途径。 相似文献
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《中国野生植物资源》2019,(4)
菊科野生花卉具有种类繁多、抗逆性和适应性强、观赏价值较高、自我繁殖能力强等优点,在城市园林绿化中具有广阔的应用前景。本文详细阐述了几种可应用的菊科野生花卉,就其观赏特性和应用前景进行了深入分析,并在此基础上对应用菊科野生花卉需要注意的问题进行了探讨。 相似文献
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黑龙江省野生宿根花卉资源及在园林中的应用 总被引:2,自引:0,他引:2
黑龙江省地处寒温带,地形复杂,野生宿根花卉资源非常丰富。在对这些野生宿根花卉研究资料进行归纳、整理的基础上,结合野外实地调查,筛选出了观赏价值较高的野生宿根花卉236种。从观赏特性、园林用途等方面进行了分析,并对野生宿根花卉资源在城市园林绿化、美化中的合理利用提出了建议。 相似文献
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重要花卉植物高密度遗传连锁图谱构建研究进展 总被引:1,自引:0,他引:1
遗传连锁图谱是以遗传标记间重组频率为基础的染色体或基因组内位点相对位置的线性排列图,高密度遗传图谱构建可实现物理图谱和遗传图谱的整合,对促进基因图位克隆具有重要作用。利用遗传图谱可有效地提高育种效率和改良品种。重要花卉植物高遗传图谱精密度尚无法满足精细定位研究的要求,百合、紫薇、郁金香、向日葵等重要花卉高密度遗传图谱构建研究较少,制约了花卉植物分子育种研究进程。概述了高密度遗传图谱构建流程及作图方法,综述了牡丹、梅花、月季、菊花、兰花、荷花、桂花等重要花卉植物遗传图谱构建研究进展,讨论了重要花卉植物高密度遗传图谱构建存在的主要问题,对今后重要花卉植物遗传图谱构建研究的发展方向及其在育种中的应用前景进行了展望,以期为花卉植物基因定位、辅助基因组组装、比较基因组学、基因克隆、分子标记辅助育种等提供参考。 相似文献
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花卉花色基因工程的研究现状及存在问题 总被引:5,自引:0,他引:5
与传统的花卉育种手段相比 ,基因工程育种具有周期短、目的性强等优点 ,因而成为近年来花卉育种的重要手段之一。花色是花卉育种的一个重要性状 ,自1987年首次通过基因工程方法获得了改变花色的转基因矮牵牛以来 ,花卉花色育种进入了分子时代。简要介绍了近年来国内外花卉花色基因工程及花器官特异表达启动子的研究进展及应用前景。 相似文献
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花色是观赏植物的重要性状,创造新花色是花卉育种的主要目标之一。基因工程技术 在观赏植物花色育种上可弥补传统育种技术的缺陷,因此它在花色育种方面的研究和应用发 展迅速。本文从花的成色作用和花色素种类入手,介绍了花色苷的生物合成,并从花色基因 的种类和克隆、花色基因工程操作的策略和方法等角度综述了近年来观赏植物花色基因工程 的研究进展。同时对我国观赏植物花色基因工程的前景作一展望。 相似文献
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Genetic engineering of flavonoid pigments to modify flower color in floricultural plants 总被引:1,自引:0,他引:1
Recent advances in genetic transformation techniques enable the production of desirable and novel flower colors in some important floricultural plants. Genetic engineering of novel flower colors is now a practical technology as typified by commercialization of a transgenic blue rose and blue carnation. Many researchers exploit knowledge of flavonoid biosynthesis effectively to obtain unique flower colors. So far, the main pigments targeted for flower color modification are anthocyanins that contribute to a variety of colors such as red, pink and blue, but recent studies have also utilized colorless or faint-colored compounds. For example, chalcones and aurones have been successfully engineered to produce yellow flowers, and flavones and flavonols used to change flower color hues. In this review, we summarize examples of successful flower color modification in floricultural plants focusing on recent advances in techniques. 相似文献
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Genetic aspects of floral fragrance in plants 总被引:1,自引:0,他引:1
It is generally assumed that compounds are emitted from flowers in order to attract and guide pollinators. Due to the invisibility
and the highly variable nature of floral scent, no efficient and reliable methods to screen for genetic variation have been
developed. Moreover, no convenient plant model systems are available for flower scent studies. In the past decade, several
floral fragrance-related genes have been cloned; the biosynthesis and metabolic engineering of floral volatiles have been
studied with the development of biotechnology. This review summarizes the reported floral fragrance-related genes and the
biosynthesis of floral scent compounds, introduces the origin of new modification enzymes for flower scent, compares different
methods for floral fragrance-related gene cloning, and discusses the metabolic engineering of floral scent. Finally, the perspectives
and prospects of research on floral fragrance are presented.
Published in Russian in Biokhimiya, 2007, Vol. 72, No. 4, pp. 437–446. 相似文献
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Genetic engineering in floriculture 总被引:15,自引:0,他引:15
The global flower industry thrives on novelty. Genetic engineering is providing a valuable means of expanding the floriculture gene pool so promoting the generation of new commercial varieties. Commercialisation of genetically engineered flowers is currently confined to novel coloured carnations. However, further products are expected given the level of activity in the field. In general terms engineered traits are valuable to either the consumer or the producer. At present only consumer traits appear able to provide a return capable of supporting what is still a relatively expensive molecular breeding tool. The biosynthesis of floral pigments, particularly anthocyanins, has been elucidated in great detail in model flowers such as petunia. This knowledge is now being applied to an understanding of a wide range of other flowers and providing a means of targeting colour modification in these species. The engineering of novel traits in a given variety also rests on capabilities in plant transformation that are continuing to expand at a rapid rate. The expression of genes transferred across genera is not always predictable and so requires considerable trial and error to arrive at stable phenotype of commercial interest. Manipulation of metabolic pathways, often requiring introduction of multiple genes can also be problematic. This is a reflection of the complexity of interactions within and between cells at a gene and gene product level. An understanding of gene function is only an essential first step in engineering novel traits. The production of novel flower colour has been the first success story in floriculture genetic engineering. Other traits that have received attention include floral scent, floral and plant morphology, senescence of flowers both on the plant and post-harvest and disease resistance. 相似文献