Life-history variation among populations of Euphrasia rostkoviana Hayne (Scrophulariaceae) in relation to grassland management

ciclo vital conduite des herbages corte cutting fauchage floraison flowering genetic variation graine grassland management grasslands grazing herbage life cycle life history manejo de praderas mowing parasitic plants pastizales pastoreo pastures peso de las semillas plante parasite poids des semences population genetics praderas scrophulariaceae seed weight seeds selection semilla siega