POTATO BREEDING WITH THE USE OF WILD GENETIC RESOURCES

机译：利用野生遗传资源进行马铃薯育种

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Potato genetic resources have diversity and reside in various regions and climatic zones within the new continent. There are about two hundred species of wild relatives ranging from diploid to hexaploid. These wild species have specific individual genotypes that have high levels of specific disease and pest resistances and abiotic tolerances to harsh conditions such as to freeze and frost compared with the common tetraploid cultivars. Also, cultivated species have variation in appearance such as red, orange or purple pigmented flesh color and these pigmentation could be used as functional food materials. Wild relatives have resistances such to late blight, bacterial wilt, cyst nematodes, root-knot nematodes, viral diseases (PLRV, PVY, PVX etc), potato tuber moth etc. Many accessions of such species have been conserved in international genebanks at CIP, USA and Germany and have been characterized and employed for germplasm enhancement. These collections have systematically evaluated for specific resistance traits and yield components, and they were listed as furnishing the traits that do not exist in the cultivated genepool. Here, the germplasm enhancement scheme using such precious wild genetic resources was introduced and highlighted.

机译：马铃薯遗传资源具有多样性，并居住在新大陆的各个区域和气候区。从二倍体到六倍体，大约有200种野生近缘种。这些野生物种具有特定的个体基因型，与普通的四倍体栽培品种相比，这些基因型具有较高水平的特定疾病和害虫抗性以及对恶劣条件（例如冷冻和霜冻）的非生物耐受性。同样，栽培品种的外观也有变化，例如肉色为红色，橙色或紫色，这些色素可以用作功能性食品原料。野生近缘种对晚疫病，细菌枯萎，线虫囊肿，根结线虫，病毒性疾病（PLRV，PVY，PVX等），马铃薯块茎蛾等具有抗性。CIP的国际种质库中已保存了许多此类物种，美国和德国已被鉴定并用于种质改良。这些收集物已针对特定的抗性状和产量构成进行了系统评估，被列为提供栽培种质库中不存在的性状。在此，介绍并强调了利用这种珍贵的野生遗传资源的种质改良方案。

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《Gamma Field Symposia no.41; Symposium on Overseas Trends in Crop Science and Mutation Breeding; 20020717-18; Ohmiya-machi, Naka-gun(JP)》|2002年|P.65-70|共6页
会议地点 Ohmiya-machi Naka-gun(JP)
作者
Kazuo N. WATANBE;
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作者单位

Gene Research Center, University of Tsukuba 1-1-1 Tennoudai, Tsukuba, 305-8572, Japan;

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原文格式 PDF
正文语种 eng
中图分类 S335.21;
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POTATO BREEDING WITH THE USE OF WILD GENETIC RESOURCES

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