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GrainGenes Reference Report: BRA-62-217

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Reference
BRA-62-217
Title
Performance of wheat dihaploid lines at two locations of the State of Sao Paulo, Brazil
Journal
Bragantia
Year
2003
Volume
62
Pages
217-226
Author
Camargo CE
[ Show all 8 ]
Abstract
Twenty wheat genotypes (18 dihaploid lines and the IAC-24 and IAC-289 cultivars) were evaluated in experiments carried out under dryland and acid soil conditions in Capao Bonito (1997-99), and under sprinkler irrigation and acid soil conditions with lime application in Tatui (1997-2000). Grain yield, yield components, agronomic characteristics and disease resistance were analysed. In addition, the genotypes were evaluated for their tolerance to Al toxicity, in nutrient solutions, at laboratory conditions. The dihaploid lines 10 and 11 and the cultivar IAC-24, in Capao Bonito, and the cultivar IAC-24 and the dihaploid line 19, in Tatui, were superior for grain yield. The dihaploid line 5 presented lodging resistance, the line 20 showed short stature and early plants to mature, and the cultivar IAC-289 exhibited higher number of spikelets per spike and heavier grains. All evaluated genotypes were susceptible to leaf spot. In relation to leaf rust, all lines were resistant, except the line 20 which was moderately resistant. The cultivar IAC-24 and all evaluated dihaploid lines were tolerant to aluminium toxicity. The higher grain yield genotypes, under dryland and acid soil conditions, were associated to tall plants, with long spikes, with high number of grains per spike and per spikelet and with tolerance to aluminium. Under sprinkler irrigation and acid soil conditions with lime application the most productive genotypes were associated to tall plants (semidwarf type) with heavy grains, and presenting no correlation with tolerance to aluminium
Keyword
[ Hide all but 1 of 25 ]
agronomic characteristics
aluminium
artificial selection
characteristics
crop yield
cultivar
disease resistance
fungal diseases
genotype
irrigation
lime
lodging
metal tolerance
nutrient solutions
plant diseases
plant height
plant pathogenic fungi
plant pathogens
resistance
soil
spikelets
spikes
tolerance
toxicity
yield components

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