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本文相当详细地评述了在巴西选育抗南美叶疫病橡胶品系的工作。列出了输入锡兰的抗南美叶疫病无性系。锡兰引种这些无性系的目的,是打算应用育种的回交方法,以培育具有远东品系高产性状的抗病品系。根据这些无性系对于南美叶疫病菌(Dothidella uli)和疫霉菌(Phytophthora palmivora)的反应,对它们作了评价。举出了抗病性显然衰退的一些例子,同时着重指出,需要用具有多样性的高度抗病材料作为基因型的重要性。由于只能在有南美叶疫病菌的西半球检验抗病性,所以讨论了设立检验站的位置,认为哥斯达黎加的土里阿耳巴(Turrialba)是最适于设站的地方。建议所有生产天然橡胶国家共同制订一个由国际团体、如联合国粮农组织执行的计划。呼吁天然橡胶生产研究界展开国际合作,以保障天然橡胶事业的前途。
This paper reviews in some detail the work of breeding an anti-South American leaf blight rubber strain in Brazil. Lists anti-South American leaf blight clones imported into Ceylon. Ceylon introduced these clones for the purpose of applying the backcross method of breeding to develop resistant strains with high yield traits in the Far East. These clones were evaluated for their response to Dothidella uli and Phytophthora palmivora. Some examples of apparent resistance to disease decline are cited, highlighting the need to use highly disease-resistant materials that are diverse for genotype importance. Since disease resistance can only be tested in the Western Hemisphere with S. mensonii, the location of the inspection station is discussed and the Turrialba of Costa Rica is considered the most suitable place to stand. It is recommended that all producing natural rubber countries work together to develop a plan to be implemented by international groups such as the Food and Agriculture Organization of the United Nations. Appeal for the natural rubber production research community to start international cooperation in order to protect the future of natural rubber business.