Nitrogen use efficiency is associated with chlorophyll content in Brazilian spring wheat
作者： Giovani Benin , Eduardo Beche , Matheus Henrique Todeschini , Elesandro Bornhofen , Cristiano Lemes da Silva
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摘要: The use of wheat cultivars with high nitrogen efficiency (NUE) is essential to reduce production costs and minimize environmental contamination through losses. Despite several investigations reported worldwide, NUE still has not been studied in Brazilian varieties. objective this study was evaluate the general specific combining ability (GCA SCA) agronomic traits associated components a diallel cross. Six parents fifteen F2 populations were planted field randomized block design three replications. relative chlorophyll content measured flag leaves at post-anthesis stage, while evaluated physiological maturity. Additive non-additive genetic effects identified controlling components. parents, Mirante, Valente, BRS Tangar , showed values GCA for B index significantly correlated grain yield (0.49*), thousand kernel weight (0.44*), NUEg (0.50*), indicating that can be used as an effective selection criterion early segregating generations. To our knowledge, first report variability spring wheat.
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