1. Austin RB, Bingham J, Blackwell RD, Evans LT, Ford MA, Morgan CL, Taylor M (1980) Genetic improvement in winter wheat yields since 1900 and associated physiological changes. J Agr Sci 94:675–689
2. Baulcombe DC, Bouton RE, Flavell RB, Jellis GL (1984) Recombinant DNA probes for detection of viruses on plants. In: Brit Crop Protection Conf Pest and Diseases ed. Brit Crop Protection Council Publ, Croydon, pp 207–213
3. Borlaug NE (1958) The use of multilineal or composite varieties to control airborne epidemic diseases of selfpollinated crop plants. First Int Wheat Genet Symp, Univ Manitoba, Man Can VIII
4. Bredemann G (1942) Züchtung auf hohen Fasergehalt bei Hanf (Cannabis sativa L.). Züchter 14:201–213
5. Bredemann G, Garber K, Huhnke W, Sengbusch v R (1961) Die Züchtung von monözischen und diözischen, faserertragreichen Hanfsorten (Fibrimon und Fibrida). Z Pflanzenzücht 46:235–245