Abstract
Quantitative Trait Loci (QTL) mapping was carried out in a set of 114 lines of the International Triticeae Mapping Initiative (ITMI) mapping population for null nitrogen fertilization during two agricultural cycles. We quantified phenologic parameters (days to: ear emergency time, flowering time) and components of yield (number of plants and ears, plant height, leaf area, length and weight of ear, spikelet number, number and total weight of grains and by third in the ear, weight of thousand grains and total yield). Interval mapping resulted of 138 QTLs, of which 47 were catalogued as major QTLs (LOD ≥ 3.0) and 91 as minor QTLs (LOD 2.0 > 0 2.9). The QTLs were distributed in 14 of the 21 chromosomes of wheat. The data showed that a high percentage of QTLs were in chromosomes 2D (49 or 35.5%), followed by 5A (22 or 15.9%), 1B (10 or 7.2%).
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Communicated by A. Aniol and H. Bürstmayr
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García-Suárez, J.V., Röder, M.S. & Díaz de León, J.L. Identification of QTLs and associated molecular markers of agronomic traits in wheat (Triticum aestivum L.) under two conditions of nitrogen fertilization. CEREAL RESEARCH COMMUNICATIONS 38, 459–470 (2010). https://doi.org/10.1556/CRC.38.2010.4.2
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DOI: https://doi.org/10.1556/CRC.38.2010.4.2