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vol.44 número2Efeitos de níveis de cálcio combinados com diferentes concentrações de sais na tolerância de trigo à toxicidade de alumínio, em solução nutritivaMarcha de absorção de nutrientes pelo rami 'Miyasaki' conduzido em casa de vegetação índice de autoresíndice de assuntospesquisa de artigos
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Bragantia

versão impressa ISSN 0006-8705versão On-line ISSN 1678-4499

Resumo

CAMARGO, Carlos Eduardo de Oliveira et al. Wheat breeding: XII. Evaluation of new inbred lines for the State of São Paulo, Brazil. Bragantia [online]. 1985, vol.44, n.2, pp.669-685. ISSN 1678-4499.  https://doi.org/10.1590/S0006-87051985000200014.

Twenty one inbred lines obtained at the Instituto Agronômico from the wheat breeding program plus the cultivars BH-1146, IAC-18, IAC-17, and Alondra-S-46 were evaluated in field experiments carried out at Campinas Experiment Center and Capão Bonito Experiment Station, during the years of 1982 and 1983, at Tietê Experiment Station, in 1982 and at Floresta Negra Farm, Maracaí, in 1983. Grain yield, plant height, number of days from emergence to flowering and from emergente to maturation, percentage of layed 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 were evaluated under field conditions and tests of resistance to stem and leal rusts and to aluminum were also made, respectively, in greenhouse and in laboratory. Considering the trials planted under sprinkler irrigation, at Campinas, the lines IAC-60 and IAC-67 showed good performance regarding to grain yield. In Capão Bonito, represented by acid soils, the lnes IAC-66, IAC-60 and IAC-69 showed high grain yield. The lines IAC-64, IAC-68, IAC-71 and IAC-60 presented good productivity at Tietê Experiment Station and IAC-67, IAC-63 and IAC-64 were more adapted to high soil fertility showing the best grain yields at Maracaí. The lines IAC-52, IAC-53, IAC-54, IAC-55, IAC-56, IAC-57, IAC-58, IAC-60, IAC-64, IAC-65, IAC-67, IAC-71 and the cultivar Alondra-S-46 exhibited semi-dwarf type when compared to the tall cultivar BH-1146. In relation to stem rust, the lines IAC-62 and IAC-65 and the cultivar Alondra-S-46 showed very good resistance presenting at seedling stage, resistance to seven rates under both greenhouse and field conditions. The line IAC-64 was resistant to four and IAC-52 and IAC-55 to three races of leaf rust in the seedling stage under greenhouse condition. The lines IAC-51, IAC-56, IAC-61, IAC-62, IAC-63 and IAC-67 presented good resistance to this rust in natural infection out in the fíeld. The lines IAC-51, IAC-60, IAC-63, IAC-68 and IAC-70 as well as 'BH-1146' and 'IAC-18' were tolerant to the presente of 10 mg/l of Al3+ in the nutrient solution.

Palavras-chave : wheat; yield; plant height; stem and leal rusts; tolerante; aluminum toxicity.

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