Postepy nauk rolniczych - Instytucja Naukowa - Polska Akademia ...

ContentsProfessor Jerzy Wa¿ny (1927–2010) — A. Grzywacz ............. 3J. Siuta — Land use optimization to mitigate processes of environmental degradation................................... 9K. Rybka, G. ¯urek — Effective use of water as an obligatory criterion inplant breeding? ............................... 19E. Matyjaszczyk, J. Sobczak — Active substances applied in protection oforganic and conventional crops in the light of current regulations ..... 33J. Szumigaj-Tarnowska, C. Œlusarski — Cladobotryum dendroides and itseffect on cultivation of Agaricus bisporus mushrooms ........... 43E.U. Kozik, I. Ostrzy¿ek, W. Szczechura — Alternaria solani – tomatopathogen and perspectives of breeding resistant cultivars ......... 55E. Cieœlik, A. Siembida — Fructans and their occurrence in cultivated plants 67Z. Luberda-Bieñkowska, A. Majewska — Effect of selenium andlow-molecular weight antioxidants on the semen quality of farm animals . 81M. Ciechanowska, M. £apot, T. Malewski, K. Mateusiak, T. Misztal,F. Przekop — Expression of the GnRH and GnRH receptor (GnRHR)genes in hypothalamus-pituitary system of ewes during different physiologicalstates ................................. 91T. Zimny, S. Sowa — Legal protection of plant varieties in the EuropeanUnion and the USA – sui generis system .................. 105£. Sikorski, B. Adomas — Biotests in toxicological and ecotoxicological research.................................... 121