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Information on genetic gains in different traits of wheat is important in breeding cultivars with improved grain yield. Changes in agronomic and phenologic traits resulting from breeding in Iranian wheat cultivars were studied. Eighty one wheat cultivars released from 1930 to 2006 were examined under well watered (WW) and terminal drought stress (DS) conditions at Karaj during 2007–2008 and 2008–2009,...
Genetic variation in nitrogen (N) use efficiency, N uptake, and N utilization was analyzed in a doubled haploid (DH) population derived from winter oilseed rape cultivars. The aim was to analyze the relative importance of uptake and utilization efficiency and to identify parameters that allow an easy selection of N efficient genotypes. Fifty-four DH lines were tested in four to seven environments...
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