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1.
瓜类蔬菜子叶组织培养研究进展   总被引:2,自引:0,他引:2  
对影响瓜类蔬菜子叶离体培养的主要因素--基因型、苗龄、大小和部位、基本培养基、碳源、激素、其他添加物质、培养方法,以及子叶培养在植物转基因研究方面的应用进行了综述.  相似文献   

2.
瓜类蔬菜耐低温性评价与调控研究进展   总被引:2,自引:0,他引:2  
李猛  吕亭辉  邢巧娟  齐红岩 《园艺学报》2018,45(9):1761-1777
从种子活力、苗期形态和生理生化等方面综述了瓜类蔬菜耐低温性评价的研究现状,进一步论述了瓜类蔬菜耐低温的生理基础和功能基因的鉴定,并从育种、农艺措施和外源物质施用等方面论述了提高瓜类蔬菜耐低温能力的有效途径,以期为建立瓜类蔬菜耐低温性科学快速的鉴定体系和解决生产中低温冷害问题提供参考。  相似文献   

3.
瓜类蔬菜是我国栽培的主要蔬菜,本文列示了目前国内瓜类蔬菜生产主要品种,介绍了瓜类蔬菜集约化育苗种子处理、幼苗生长发育各阶段管理要点,针对瓜类蔬菜“带帽”率高、易徒长等问题,从多维度提出了技术对策。  相似文献   

4.
<正>近年来,病虫害严重制约着瓜类蔬菜的发展,也极大挫伤了瓜农生产积极性。嫁接技术虽然抑制了某些瓜类蔬菜病虫危害,但也影响了瓜类蔬菜的品质,且嫁接苗的成本和技术精度也限制了大面积生产,探索瓜类蔬菜病虫害无公害防治新技术势在必行。2012年以来,淮安市怡园果蔬专业合作社、淮安市浦马蔬菜专业合作社在淮安市席桥镇浦马村利用大棚设施开展瓜类蔬菜病虫绿色无公害防治试验与示范栽培,经过淮安生物工程高等职业  相似文献   

5.
瓜类蔬菜集约化嫁接育苗是提高其产量和品质的重要方式,阐述了主要瓜类蔬菜的集约化嫁接育苗技术要点,深入分析瓜类蔬菜集约化嫁接育苗过程中可能出现的各种问题,并提出了相应的技术对策。  相似文献   

6.
许美良  徐静  黄瑛  杨程鹏 《蔬菜》2005,(5):41-42
自粉病是瓜类蔬菜普遍发生且为害严重的病害之一,在大棚、温室栽培的瓜类蔬菜中尤为严重,影响了瓜类蔬菜的产量和品质,制约着瓜类蔬菜生产的发展。为了更好地防治瓜类蔬菜白粉病,筛选出无公害的绿色环保防治药剂,我们选用韩国SK公司生产的99%绿颖农用喷淋油,进行大棚黄瓜的白粉病防治试验,现将结果报告如下。  相似文献   

7.
瓜类蔬菜是重要的蔬菜种类,广泛种植于世界各地。瓜类蔬菜多为蔓生作物,生产中通过设立支架提高产品的产量与品质。近年来,随着分子生物学的快速发展和基因工程技术的深入研究,对作物矮生性状及其相关基因的研究也愈加深入,应用基因工程技术对作物株高进行遗传改良已成为提高作物产量的有效途径,培育合理株型已成为作物育种的重要目标。矮生性状作为瓜类蔬菜育种中的一个重要的结构性状,也是当前瓜类蔬菜育种工作的热点。笔者综述了瓜类蔬菜矮生性状的遗传学研究进展,特别是黄瓜、西瓜、南瓜和甜瓜等主要瓜类蔬菜矮生性状相关基因的遗传学分析、基因定位以及基因克隆等方面的研究进展,并对瓜类蔬菜矮生性状在作物分子育种中的应用和发展趋势进行了展望。  相似文献   

8.
韩欢欢  谢冰 《中国瓜菜》2012,25(4):43-48
白粉病是瓜类蔬菜的主要病害之一,严重影响瓜类蔬菜的产量和品质。抗病育种是解决白粉病对瓜类蔬菜生产危害的一条重要途径。为给瓜类蔬菜白粉病抗性育种工作提供参考和借鉴,综述了在病原菌、抗性鉴定方法、抗性遗传规律、抗性种质、抗病品种选育以及分子标记技术的应用等方面的研究现状,分析了现阶段研究中存在的问题,并对研究前景进行了展望。  相似文献   

9.
《中国瓜菜》2019,(10):26-29
为收集、保存和了解江西省蔬菜种质资源现状,以江西省农作物种质资源普查与收集行动为基础,共收集到233份瓜类蔬菜资源。采用查阅文献、实地调查和田间试验相结合的方法,通过对分布在江西省11个县(市、区)、40个乡(镇)、120个村及普查县瓜类蔬菜种质资源分类、分布规律、性状特点及优异资源的重点分析。结果表明:瓜类蔬菜地方品种有6个科;部分地方品种品质较好,但纯度低、退化严重;都昌县、崇仁县、寻乌县具有丰富的瓜类蔬菜地方品种。本文对调查地区瓜类蔬菜资源现状、特色资源农艺性状特点及保护与利用进行了分析,研究结果可为江西省瓜类蔬菜地方资源的合理利用及育种工作提供参考。  相似文献   

10.
受合肥华夏西瓜甜瓜育种家联谊会派遣,笔者和陈会中秘书长以及新疆哈密瓜研究中心伊鸿平研究员、中国农业科学院郑州果树研究所徐志红副研究员一起,参加了以吴明珠院士为首的新疆哈密瓜研究中心赴乌克兰瓜类科技考察团。考察团于2004年9月先后访问了乌克兰农业科学院哈尔科夫瓜类蔬菜研究所(北方)和赫尔松瓜类蔬菜研究所(南方),并对乌克兰瓜类蔬菜进行了科技考察和学术交流。  相似文献   

11.
A review of research and research needs in urban forestry was carried out in Denmark, Estonia, Finland, Latvia, Norway and Sweden during 2005. A questionnaire addressing post-2000 and ongoing research was sent to 146 researchers and generated 76 completed questionnaires. Universities were found to lead urban forestry research, while municipalities headed funding organisations in terms of number of projects funded. Planning, ecological and management aspects were the most common research themes, but socially oriented research also played an important role. The research needs questionnaire was sent to 192 key research actors (assignors, users and researchers), resulting in 63 completed needs assessments. The research themes of ‘urban forest management’, ‘social and cultural values’ and ‘urban forest and green planning’ were prioritised for future research. Comparison of ongoing research and research needs showed discrepancies, as ongoing research does not always cover the same themes identified as primary research needs. Priorities for future research as identified by the research community respective those assigning and using research also differed. Economic assessment of benefits, for example, scored much higher as a need among researchers than other respondents. In terms of present weaknesses in the research ‘infrastructure’, research actors emphasised lack of funding, fragmentation of research and insufficient critical mass. The region's urban forestry research can be enhanced and made more meaningful by strengthening national and international networking within the research community, across disciplines, as well as between researchers and those commissioning and using research.  相似文献   

12.
综述了食用菌育种方法及研究进展,阐述了离子束注入生物体诱变的机理,介绍了离子束注入诱变食用菌的研究进展。最后,提出了低能离子注入诱变技术应用于食用菌育种方面的发展方向。  相似文献   

13.
摘要:从聚落景观研究入手,对国内乡村聚落景观研究的基础理论、研究内容、研究方法和技术以及综述聚落景观研究的主要流派等进行介绍,指出在研究方法上侧重于定性描述,采用定量分析研究少,没有形成一个很好的古村落景观研究的评价体系。  相似文献   

14.
The Mediterranean region is facing many challenges, some of which can be addressed by nature-based solutions such as urban forests and green space. However, at best, urban forest research from Mediterranean countries has been only briefly addressed in review papers up to date. This Scopus-based review paper provides first insights into the development of urban forest research in the Mediterranean in the 20-year period from 1996 to 2015. The purpose of the review was to a) analyse distribution of urban forest research in the Mediterranean and identify countries that are forerunners based on the number of publications, b) to analyse distribution of research themes across the Mediterranean and per country, and hence point to research gaps and needs. Researchers from Italy, Turkey and Spain were the most productive in the analysed period. Research is mainly concentrated in the North, while it is scarce to non-existent in South and Eastern Mediterranean countries (excluding Turkey and Greece). Papers dealing with pollution, human health and sociocultural values were the most frequent. Some countries exhibited research specialisation with regard to certain themes. For instance Italian researchers mostly focused on topics related to pollution and urban forest management, the majority of Spanish papers addressed urban forests in the context of human health, while sociocultural values were the main research theme for researchers from Turkey. Papers were analysed also based on research methods, approaches and study locations. Suggested future research includes analysis of the quality of knowledge related to urban forests in the Mediterranean as well as of collaboration between researchers, research institutions and countries.  相似文献   

15.
我国是世界上最大的菠菜种植国及消费国,但由于受种质资源材料的限制,可用于育种研究的材料极度匮乏,这加大了具备优良商品性状菠菜新品种的培育难度,对菠菜强大的需求与其较不完善的种质相关研究间形成了鲜明的矛盾。综述菠菜的生物学特性、种质资源的基础性研究,基于形态学标记和分子标记的菠菜种质遗传多样性研究进展,并对其进行展望。  相似文献   

16.
Research mapping is a method of organising research information as part of a process of formulating a research policy in a specific area. A research mapping project was undertaken in the UK, which aimed to map existing and future research into public and green space, to identify gaps in order to help set priorities for future research, and to develop a freely accessible and searchable database of this research. The mapping was structured around two axes. The first axis was of research themes based on The Value of Public Space but developed further and broken down into sub-themes. The second axis was a typology of green and public space based around Planning and Policy Guidance Note 17 (PPG17) with elaboration from Green Spaces, Better Places. Research dating back to 10 years was collected together with information on recently completed, ongoing and planned UK research. Only research meeting specific quality criteria was included. Some information was also collected at a seminar where attendees from a range of organisations were invited to offer their perspectives on where research priorities should be directed. All the material was analysed and the main trends were identified. Three key cross-cutting themes common to much of the research were identified. These are the general lack of baseline surveys against which to assess progress over time; methodological issues, especially the need to standardise data collection methods and techniques; the classification of social groups, currently considered to be too crude.It was found that most research has been undertaken on physical aspects, such as planning and on biodiversity. Economic values have also been a focus, but on a smaller scale. Social research is quite well covered but very patchy. Management is better covered than maintenance. By far the weakest area represented in the research is health and well-being, both in terms of social groups and types of green space. Priorities for further research were then identified.  相似文献   

17.
金针菇活性成分丰富,作用广泛。对近年来国内外金针菇中活性物质的主要结构及其作用研究进行了综述,总结了金针菇现阶段活性物质研究情况,展望了金针菇未来可能研究方向。  相似文献   

18.
中国缓、控释化肥的研发进展   总被引:1,自引:0,他引:1  
刘娟  赵晓进 《北方园艺》2011,(21):189-190
缓、控释肥料是未来肥料产业的发展的重要方向之一.该文综述了近年来我国缓、控释肥料的开发和产业化现状,分析了相关研发存在的问题,提出了中国缓、控释肥料研发应进一步采取的对策.  相似文献   

19.
梁静思  祝菊澧  徐裴  张佩  李灿辉  唐唯 《园艺学报》2020,47(9):1777-1792
植原体能引起多种植物的丛枝、缩叶、紫顶及果实和花畸形。近年来植原体引起的马铃薯病害已严重影响了马铃薯的质量和产量。对植原体病害的传播特点和植原体的分类学研究进行了概述,总结了植原体基因组和质粒研究现状,分泌蛋白、寄主抗病基因克隆和致病机理相关的研究进展;对几种马铃薯植原体病害进行阐述;讨论了植原体病害研究所存在的问题及发展趋势。以期为植原体病害研究、田间快速检测及病害流行预测、植原体重要功能基因挖掘和马铃薯抗病育种提供参考。  相似文献   

20.
根据国内外的研究现状,综述了甘蔗花叶病的症状与危害、致病病毒、发病规律、病毒检测及防治措施等方面的研究进展.并提出了今后的研究方向和发展目标。  相似文献   

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