Cryopreservation of Brassica Species

摘要: Geographical locations of major, wild relative diversity in members Brassicaceae such as Brassica nigra, Sinapsis alba, Raphanus sativus, and Eruca sativa are centered the Mediterranean, particularly Spain. Other regions include France southern Britain, a few species exhibit xerophytic adaptations to Saharan region (Tsunoda 1980). Relationships between agronomically important complex they based on interspecific hybridizations phylogenetic relationships B. carinata, juncea, oleracea, napus, campestris. Within this system, scheme termed U-triangle has been proposed (see Sjodin 1992), thus, napus is amphidiploid derived from hybridization campestris oleracea. To add further complexity, different forms including crosses with cultivated oleracea campestris, have found at various geographical locations. In addition, Tsunoda (1980) reports wide range within centers, for example: fruticulosa (Mediterranean coast), oxyrrhina (S Spain Portugal Morocco), repanda (Algeria), elongata (SE Europe, W Asia). Reports endangered, wild, Coronopus navasii, (Iriondo Perez 1990a,b), Lepidium hyssopifolium, an endangered watercress located Victoria, Australia (Cropper 1987), Braya humilis, native alpine tundra central Colorado, (Neely Carpenter 1986).