Performance of wheat lines in two tillage conditions os State of Sao Paulo and their tolerance to aluminum toxicity

• Published in: Bragantia Vol. 67; no. 3; pp. 613 - 625
• Main Author: Camargo, Carlos Eduardo de Oliveira
• Format: Journal Article
• Language: English
• Published: 01.01.2008
• Subjects: Seri; Triticum aestivum
• ISSN: 0006-8705
• DOI: 10.1590/S0006-87052008000300009

Eighteen inbred lines originated from crosses between bread wheat genotypes (Triticum aestivum L.) and between bread and durum (T. durum L.) genotypes, control cultivars IAC-24 and IAC-370 and were evaluated in experiments carried out under dryland and acid soil conditions in Capao Bonito and under sprinkler irrigation and limed soil conditions, in Mococa, in 2003-2005. Grain yield, yield components, agronomic characteristics and resistance to the causal agent of leaf rust were evaluated. The assayed genotypes were also evaluated for tolerance to Al toxicity in nutrient solutions. The inbred lines 9 (IAC-24/Anahuac M - Tol Al) and 14 (BH-1146//AA'S'/WIN'S'/3/G.C.W1/ SERI) were superior for grain yield in Mococa and the inbred line 10 (IAC-24/Anahuac M - Tol Al), tolerant to Al toxicity, in nutrient solutions, presented good performance in relation to grain yield showing the tallest semidwarf plants, in Capao Bonito. All genotypes showed semidwarf plant type and the cultivar IAC-370 and the lines 13 (BH-1146//AA'S'/WIN'S'/3/IAC-287) , 14 and 15 (F12.71/COC//CMH76.173/CMH 75 A 66/3/Desconhecido) exhibited resistance to lodging. Lines 13 and 14 due to low incidence of leaf rust can be considered as good sources of resistance. Lines 17, 18, 19 and 20, originated from the interspecific cross Maya'S'/SPRW'S'//SAP'S'/3/BUC'S'/4/IAC-225/5/IAC-1003 had long heads associated with heavy grains, line 3 (IAC-24/Siete Cerros) showed good performance for number of grain per spike and spikelet and line 14 for number of spikelets per spike. IAC-24 and BH-1146 cultivars and the inbred lines 4, 5, 6, 7, 8 and 10, selected from the hybrid IAC-24/Anahuac M - Tol presented high Al tolerance in the nutrient solutions.