Some methodological achievements of the Hungarian hybrid maize breeding (Budapest, 1970)
SOME METHODOLOGICAL ACHIEVEMENTS OF THE HUNGARIAN HYBRID MAIZE BREEDING Edited by I. KOVÄCS This collection of papers covers the major methodological results achieved in Hungarian hybrid maize breeding during the past 15 years. Primarily the papers examine the genetic stock and the recent methods of production and preliminary evaluation of inbred lines. Various experiments analyze the variability in combining ability of inbred lines within the population of long-time inbred lines. Others treat the development of combining ability and certain agronomic characteristics with respect to fertile and various other donors produced by sterile lines. Further studies tackle such important problems like the influence of environment, fertility of sterile and inbred lines and of the hybrids, yielding ability, cold-resistance; and some economic considerations are also discussed. Attention is drawn to new relationships emphasizing the need of further research into yield components, both from the aspects of production and evaluation of inbred lines, and the development of traits in the hybrids. These subjects are complemented with papers discussing the phenomenon of heterosis, resistance and seed-corn biological studies, certain developmental and nutrition-physiological problems and some of the important quality tests employed in this field of research. AKADÉMIAI KIADÓ Publishing House of the Hungarian Academy of Sciences В U DAPEST