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发挥海南热带资源优势构建热带水稻种质中心
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作者 王效宁 孟卫东 《海南农业科技》 2002年第2期7-9,共3页
我国物种资源丰富,种质资源特别是稻种资源保存量居世界首位。而目前我国种质资源保存与研究利用严重脱节,造成资源利用率低。自80年代中期以来,由于育种亲本遗传基础狭窄,制约了品种选育的进展,致使推广品种遗传背景狭窄,一致性... 我国物种资源丰富,种质资源特别是稻种资源保存量居世界首位。而目前我国种质资源保存与研究利用严重脱节,造成资源利用率低。自80年代中期以来,由于育种亲本遗传基础狭窄,制约了品种选育的进展,致使推广品种遗传背景狭窄,一致性增强,为一些毁灭性病虫害的发生留下了隐患,从而导致我国水稻育种进展缓慢,产量徘徊不前,品质和抗性也少有突破性进展。在长期的进化过程中,热带水稻资源适应了热带高温多湿、病虫害滋长的恶劣环境,具有丰富的遗传多样性及功能基因。本文建议在海南建立热带水稻种质中心,应用现代分子生物技术与常规鉴定相结合的方法,集中力量对热带水稻资源进行深入的研究,发掘其中的特异基因,为这些基因的利用提供科学依据,为我国科研工作者提供育种材料,加速育种进程。 展开更多
关键词 海南 热带资源 水稻 种质中心 热带水稻资源
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Conservation and Utilization of Crop Genetic Resources in Malaysia: Mardi's Effort
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作者 Mohd Shukor Nordin Mohd Shafie Md Shah +3 位作者 Mohd Norfaizal Mohd Ghazali Siti Nurzuraini Abdul Rahman Salma Idris Mohd Shukri Mohd Ali 《Journal of Agricultural Science and Technology(A)》 2015年第6期381-386,共6页
Malaysian Agriculture Research and Development Institute (MARDI) is the country's major custodian of the nation's crops genetic resources. It has a global responsibility in the conservation of genetic resources of... Malaysian Agriculture Research and Development Institute (MARDI) is the country's major custodian of the nation's crops genetic resources. It has a global responsibility in the conservation of genetic resources of banana, sweet potato and citrus, and national responsibility for the conservation of crops, such as rice, tropical fruits and some herbs and medicinal plant species. MARDI rice seed genebank at Seberang Prai in the state of Penang was established in 1984 and currently holds 12,770 registered rice accessions, of which 53% are of local origin. In addition, MARDI also conserves genes in the field, mostly for underutilized tropical fruit genetic resources. At present, about 168 species of underutilized, rare and wild tropical fruit species consisting of about 2,000 accessions, the largest in the country, are being conserved. The species include "kuini" (Mangifera odorata), "bacang" (Mangifera foetida), "binjai" (Mangifera caesia), "cerapu" ( Garcinia praniana), "rambai" (Baccaurea motleyana), "asam gelugor" ( Garcinia atroviridis), "terap" (drthocarpus odoratissimus) and "pulasan" (Nephellium rambutan-ake). The accessions are mostly conserved ex situ in field genebanks located at the various MARDI stations throughout the country. Although the conservation of the various crop species genetic resources is important, the real challenge is enhancing its utilisation. The main objective of the paper was to share and disseminate information related to works conducted and strategies opted by MARDI on the conservation and utilization of crop genetic resources. Information on species of crops that are available in MARDI's genebank was also highlighted together with brief information of some of the associated traits of significant importance posses by those genetic resources. 展开更多
关键词 CONSERVATION genetic resources tropical fruits GERMPLASM genebanks.
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