已收录 273084 条政策
 政策提纲
  • 暂无提纲
ON THE ORIGIN OF THE CULTIVATED CHENOPODS (CHENOPODIUM)
[摘要] On the basis of morphology Chenopodium quinoa of the Andes and C. nuttalliae of Mexico appear to be very closely related species. Artificial hybrids have been secured between the two. It is suggested that both species may have been derived from the same original wild type. A weedy quinoa, C. quinoa var. melanospermum , is known from South America, but as yet a weed race closely related to C. nutalliae has not been reported from Mexico.
[发布日期]  [发布机构] 
[效力级别]  [学科分类] 医学(综合)
[关键词]  [时效性] 
   浏览次数:2      统一登录查看全文      激活码登录查看全文