Seventeen inbred lines selected from hybrid populations introduced from Oregon State University, U.S.A., two lines from Chile, four lines from México and two wheat cultivars (Anahuac and Alondra-S-46) were evaluated in three trials carried out at Campinas (1984, 1986 and 1987) under sprinkler irrigation. Two trials were carried out at different locations of the Paranapanema Valley (1985 and 1986), in upland conditions, taking into account the grain yield, yield components and disease resistance. Under greenhouse conditions the studies aimed to assess the response of the genotypes for the two race mixtures of stem rust and for three race mixtures of leaf rust. Under laboratory conditions, the germoplasms were evaluated to Al toxicity using nutrient solutions. The lines 5 (Sonora 64/S 52/4/Tezanos Pintos Precoz//IRN467 /CIANO/3/Chris) = IAC-243, 12 (Bezostaja/Sava//Anza) = IAC-187 and 13 (II 54--66/Collafen//Alondra) = IAC-188 presented short stature, lodging resistance, medium cycle from emergence to flowering. The line 16 (Lilifen *2// *2 Dijon/8316/3/Pavon) = IAC-190 showed medium stature, and good grain yield under irrigated conditions. The line 22 (Trush "S") = IAC-193 showed short stature, earliness, and lodging resistance. The lines 22 and 13 were the most productive in upland conditions. The line 17 (Rannjaja/Leonardo/3/4/ Tezanos Pintos Precoz//IRN 46/CIANO/3/Chris) showed resistance to three race mixtures of leaf rust (Puccínia recondita) under greenhouse, however, under field conditions this line revealed immunity to this patogen; resistance to two race mixtures of stem rust (P. graminis f. sp. tritici) was noted. Moderate resistance to powdery mildew in adult stage of the plants was observed as well as a relatively low amount of leaf spots, under field conditions. The cultivar Alondra-S-46 showed to be a good genetic source for long head, the line 3 (Frontana/Cheyenne//llle de France/3/Chiroca) = IAC-182 revealed good for number of spikelets per head. The cultivar Anahuac for large number of grains per head and per spikelet. The lines 13 and 17 were considered good for heavy grains. The lines 2 (Lilifen* 2//*2 Dijon/8316/3/Pavon), 3, 5,7 (Bragado/Pavon), 10 (Cappelle Desprez/2* Pullman Selection 101//Pavon) = IAC-186, 12 and 22 were the most tolerant to Al3+ toxicity.
wheat; yield components; disease resistance; aluminum tolerance