Twenty two inbred lines from the wheat breeding program at the Instituto Agronômico of Campinas plus the cultivars BH-1 146, Alondra-S-46 and IAC-5 were evaluated in field experiments carried out at Campinas, Capão Bonito and Tietê Experimental Stations, and at two farms located in the Paranapanema Valley, during the period 1984-1986. Grain yield, plant height, number of days from emergence to flowering and from emergence to maturation, percentage of lodged plants, head length, number of grain per spike and per spikelet, number of spikelets, weight of 100 grains, and resistance to stem and leaf rusts, to Helminthosporium sp. and to powdery mildew were evaluated under field conditions. Tests of resistance to stem and leaf rusts and to aluminum tolerance, were made in greenhouse and laboratory, respectively. At Capão Bonito and Paranapanema Valley the cultivars BH-1146 and the line 12 showed good grain yield in upland conditions. The tines 4, 9 and 13 at Campinas and the line 8 at Tatuí presented good productivity under sprinkler irrigation. The cultivars BH-1146 and the lines 13, 20 and 14 exhibited the highest grain yield considering the average of the nine experiments. The lines 2, 7, 8,17 and 18 and the cultivars Alondra-S-46 exhibited semidwarf type when compared to the tall cultivars BH-1 146 and IAC-5. In relation to stem rust, the lines 7 and 8 and the cultivars Alondra-S-46 showed resistance at seedling stage to the six races and the lines 17 and 18 were resistant to five races, under greenhouse conditions. The lines 1, 2, 7, 8, 12 and 17, plus the cultivars Alondra-S-46 presented resistance to stem rust under field conditions. The lines 1, 5, 8 and 18 exhibited low levels of leaf rust under natural infection out in the field. The lines 11, 12, 13, 19, 20 and 21 as well as 'BH-1146' were tolerant to the presence of 10mg/liter of Al3+ in the nutrient solution.
wheat; Triticum aestivum L; grain yield; plant height; stem and leaf rusts; tolerance; aluminum toxicity