【摘 要】
：
由稻瘟病菌(Magnaporthe oryzae)引起的稻瘟病是一种世界性的稻作病害,在世界各个水稻生产国或地区每年都有不同程度的发生,给粮食安全带来隐患.实践证明,在众多的防治措施中抗病品种的培育和种植是控制该病害最为经济、安全和有效的方法,而抗病基因的发掘与利用则是抗病育种的基础和核心.从20世纪90年代初开起,各类分子标记技术的应用加速了稻瘟病抗病基因的发掘和利用这一领域的发展.
【机 构】
：
广东省农业科学院水稻研究所,广州 510640;广东省水稻育种新技术重点试验室,广州 510640
论文部分内容阅读
由稻瘟病菌(Magnaporthe oryzae)引起的稻瘟病是一种世界性的稻作病害,在世界各个水稻生产国或地区每年都有不同程度的发生,给粮食安全带来隐患.实践证明,在众多的防治措施中抗病品种的培育和种植是控制该病害最为经济、安全和有效的方法,而抗病基因的发掘与利用则是抗病育种的基础和核心.从20世纪90年代初开起,各类分子标记技术的应用加速了稻瘟病抗病基因的发掘和利用这一领域的发展.
其他文献
Prosapia ignipectus (Fitch) is the northernmost species of the spittlebug family Cercopidae in the New World.It occurs in the northern United States from Minnesota to Maine and in southern Ontario (Ha
Hyalessa China, 1925 formerly included only the type species, H.ronshana, which was established based on just the female holotype collected from Yunnan Province in China.The male of this species remai
With 166 genera and 591 species, Tropiduchidae, are mainly distributed in the Palaearctic, Afrotropical and Australasian regions, and with few representatives in the Caribbean (Bourgoin 2013).They hav
Higher classifications of Cicadoidea have been traditionally based on structures associated with the production of sound and related morphological structures: timbals, timbal covers,tympana, and wing
Insect wing diversity is evident among the different orders, families and genera.This diversity is expressed by the disparity of structures of the wing, its size, shape, arrangement and number of vein
Morphological studies of the reproductive systems of insects contribute to our knowledge of reproductive biology (Tsai and Perrier, 1996; Araújo et al., 2005, 2010; Freitas et al., 2010).Leafhoppers a
Species diversity and distribution patterns are at the core of understanding biodiversity, biogeography and macroecology and play an important role in the understanding of the diversity, origin and ev
Delphacid planthoppers, including the brown planthopper (BPH) Nilaparvata lugens, the white-backed planthopper Sogatella furcifera, the small brown planthopper Laodelphax striatellus, are the main des
对于北方偏粳型杂交稻而言,在亲本中引入了籼性血缘,杂种优势增强,表现出如高秆、大穗等强大的生物优势;但后期由于抗寒性差,造成结实率低,产量潜势并不能充分发挥,米质差本文以北方杂交粳稻骨干亲本及其组合为材料,采用程氏指数法和SSR分子标记法,对亲本籼粳成分与杂种产量和米质性状的关系进行了研究.结果表明:杂交粳稻骨干亲本的程氏指数在13.5～ 19.3之间,偏籼系数在0.12～0.38之间,采用程氏指
Cixiidae are regarded as a plesiomorphic group of Fulgoromorpha.Neither the monophyly of the Cixiidae nor the phylogenetic relationships within the Cixiidae have been satisfactorily clarified (Coetto