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稻属(Oryza)野生种传代的传统方法是用种茎保存。种茎保存的优点是有利于保持该材料的种性,但用这种方法来保存我国数万份野生稻资源,需要大面积的冬天不低于10℃的大田或温室越冬设备,这不仅要花费大量的人力、物力和财力,而且很不安全,如有天灾人祸将造成无可挽回的损失。所以,品种资源“七五”规划中规定,把野生稻种子送国家库保存。充分利用野生稻资源,就需要对各份材料进行农艺性状,抗病虫、逆性鉴定,这需要相当数量的种子。野生稻种子收集十分困难,且种子休眠性很强,发芽力差,成苗率低。本研究的目的在于摸索稻属各野生种种子发芽的最佳条件,用各种手段最大程度地提高种子的发芽、成苗率。一、材料与方法供试材料167份,分别来源于国际水稻研究所、中国水稻研究所和广东省农科院,属于23个野
The traditional method of passage of Oryza wild species is by seedling preservation. The advantage of seed-saving is that it helps to maintain the species of the material, but using this method to conserve tens of thousands of wild rice resources in our country requires a large area of winter or winter green plants in winter not less than 10 ℃, not only Spend a lot of manpower, material and financial resources, but also very unsafe, if natural disasters will cause irreparable damage. Therefore, the species resources “seven five ” plan provides that the wild rice seeds to the national library to save. To make full use of wild rice resources, it is necessary to conduct agronomic traits, pest resistance, and reciprocity identification on each of the materials, which requires a considerable amount of seeds. Wild rice seed collection is very difficult, and the seeds of a very strong dormancy, poor germination, seedling rate is low. The purpose of this study is to explore the best conditions for seed germination of wild species in the genus Oryza and to maximize germination and seedling emergence rate by various means. First, the material and methods 167 test materials, respectively, from the International Rice Research Institute, China Rice Research Institute and Guangdong Academy of Agricultural Sciences, belonging to 23 wild