| 书目名称 | Genus Medicago (Leguminosae) | | 副标题 | A Taxogenetic Study | | 编辑 | Karlis Adolfs Lesins,Irma Lesins | | 视频video | | | 图书封面 |  | | 描述 | In introducing ourselves it should be told that in our native Latvian language our name is written LesiJ;l. s. In most English publications, as in this work, the writing has been simplified to Lesins, and often only the first initial has been used. Our interest in Medicago was first aroused during 1936-38, while em ployed as teachers in the agricultural and home economics school at Be brene, Upper Zemgale, Latvia. Some plants of alfalfa (M. varia, M. media), locally called ‘lucema‘, were found growing wild along roadsides in that area, though no alfalfa fields had been seen in the vicinity within the me mory of local farmers. Some roadside plants were dug out and transplanted to the garden, but their seedset was poor. During the next few years we paid only slight attention to alfalfa, the reason being that Latvia is a country with Atlantic climatic features (annual precipitation 600-700 mm; mild win ters for its 56°-58° N. Lat. , with January isotherms between -3° and -7° C; moderately warm summers, with July isotherms between 16° and 18° C), which together with its soils, mostly of acidic, podzolic type, is not well suited for alfalfa production. It was not until 1945 in Swed | | 出版日期 | Book 1979 | | 关键词 | Polle; agriculture; development; environmental stress; evolution; flora; growth; plants; soil | | 版次 | 1 | | doi | https://doi.org/10.1007/978-94-009-9634-2 | | isbn_softcover | 978-94-009-9636-6 | | isbn_ebook | 978-94-009-9634-2 | | copyright | Dr. W. Junk bv Publishers, The Hague 1979 |
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发表于 2025-3-21 19:02:38
