Reaction of wheat genotypes to soil aluminum differential saturations

Abstract

Ten wheat (Triticum aestivum) genotypes were evaluated in microplots with aluminum saturation of 0, 15, 30 and 45%, during 1994, in Londrina, Paraná, Brazil. The soil was a Distrofic Red Latosol (Typic Haplorthox), with 65% saturation of aluminum, amended with dolomitic lime. Variables evaluated included grain yield and yield components: ears.m-2, grains.ear-1 and the weight of 1000 grains. Genotypes differed in yield and yield components. Increasing aluminum saturation decreased yield, ears.m-2 and grains.ear-1, but did not alter thousand kernel weight. The genotypes reacted differently in relation to the toxic soil aluminum. Anahuac and IAPAR 29 were aluminum sensitive; OCEPAR 16, Trigo BR 18, and Trigo BR 23 were moderately sensitive; IAPAR 6, IAPAR 53, and IAPAR 60 were moderately tolerant; while IAC 5-Maringá and Trigo BR 35 were tolerant.

Tolerance of arabica coffee cultivars for aluminum in nutritive solution

“…Benin et al (2004) evaluated oat genotypes and observed root growth retaking values that allowed a perfect discrimination between the sensitive and tolerant genotypes. Similar results were obtained by Freire et al (1987) in rice, by Baligar et al (1990) in sorghum and in wheat by Costa et al (2003). Cultivar Oeiras MG-6851presented a higher RL in the treatments with the presence of aluminum during the germination, regardless of aluminum absence or presence during the seedling growth.…”

Behavior of Aluminum Adsorption in Different Compost‐Derived Humic Acids

“…The crops growth in acid soil is generally poor due to saturation of Al in the soil (the degree of Al saturation is defined as the percentage of exchangeable Al relative to the total exchangeable cations) [9][10][11][12]. In a strongly acid soil (pH < 5.0), Al toxicity is considered as the greatest damaging factor for crops [13,14].…”

Genótipos de trigo: características agronômicas em dois locais do estado de São Paulo

“…espiga e massa de cem grãos (CAMARGO et al, 2003;COSTA et al, 2003;RODRIGUES et al, 2007). A avaliação dessas características, entre outras, permite aos programas de melhoramento selecionar genótipos promissores, bem como entender o comportamento dos genótipos quando submetidos às diferentes condições de cultivo.…”