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The subterranean clover in some si tes from Central Spain. Preliminary experiments on its response to shade and low temperatures

AuthorsPastor Piñeiro, Jesús ; Martín, A.; Mendizabal, Teresa; Oliver, Salvador
KeywordsSubterranean clover
Temperatures pastures
Issue Date1973
PublisherSociedad Española para el Estudio de los Pastos
CitationProceeding of the 6th general meeting of the European Grassland Federation: p.271-277(1973)
AbstractPopulations of subterranean clover, belonging to ssp. subterraneum and ssp. brachycalycinum Katzn. et Morley, from sites in Central Spain, were studied; some ecológica! characteristics are given. Several morphologic characters weie studied, observing that the plant material of the ssp. brachycalycinum was quite homogeneous within each populatíon, otherwise happened in the populations belonging to the ssp. subtemmeum. Plant and leaílet size were larger in the populations of the ssp. brachycalycinum than in the ones of the ssp. subterraneum. The number of runners was very variable for both subspecies. A germinatíon experiment was carried out with seeds collected from those sites. The percentages of germinated seeds ranged from 31 to 82%, differences among populations being notable. The influence of shade on some morphological characters of plants from autochthonous populations and the australian cultivars most used in Spain was studied. The leaf was the most affected organ in the four characters studied in the plant material of both subspecies. When considering the influence of shade on the morphologic characters used in the diagnosis of forras, the rank correlation coefficients of Spearman were no significan!; this supports their diagnostic valué in field work conditions. The behaviour of autochthonous populations and australian cultivars to low temperatures was estimated with respect to nascency, persistence and time of flowering. When considering persistence, it was observed that the response of the australian cultivars was very different, whüe the one of the autochthonous populations was more simflar. The plant material that better supported cold belonged to the ssp. subterraneum.
Description7 páginas, ilustraciones y tablas estadísticas
Appears in Collections:(IRN) Comunicaciones congresos
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