[PDF] Top 20 Nitrogen-use efficiency of maize genotypes in contrasting environments

... coefficients of variation (CVs) were, respectively, ...leaf nitrogen, ...coefficients of variation can be classified as low (<10%), medium (10-20%), high (20-30%) and very high (> ... See full document

... plant of 17, 54 and 90 %; for number of seeds per plant 30, 66 and 92 %; for number of seeds per pod 16, 23 and 25 %; for hundred seed weight 12, 25 and 14 % and, for grain yield, reductions ... See full document

... the maize physiological responses showed low coefficients of variation, except for RDW (Table ...the maize physiological responses relative to the treatments without ...the maize physiological ... See full document

... performance of the genotypes under nitrogen stress, the genotypes were represented in a Cartesian plane using the ratio between the GY values obtained at different nitrogen ... See full document

... activation of distinct genes and biochemical mechanisms with correspondingly high energy demands (HIREL et ...N use for the growth of R. baccifera suggests the occurrence of “luxury ... See full document

... productivities of 100 bean lines were evaluated in the presence and absence of nitrogen fertilizer in order to identify those with high nitrogen use efficiency ... See full document

... potential of the crop is defined by their ...performance of irrigated rice genotypes in contrasting ecosystems and their effects on morphophysiological ...arranged in a complete ... See full document

... R/S of maize at silking were greater from the US Corn Belt than those from all five regions (Figs 4 and 5) in China, including the maize in Re- gion I (northeast China Plain) where the ... See full document

... BY in both ...0.82** in Pato Branco and Coxilha, respectively (Figure ...HI in Brazil ...potential of grain yield in wheat (Cox et al., 1988). In the current study there was no ... See full document

... investigated in two growing seasons (2010 and ...data of grain yield, dry matter, and N uptake, the following fertilizer indices were assessed: agronomic N-use efficiency (ANE), apparent N ... See full document

... among maize genotypes under normal and stressed nitrogen conditions allow breeders to develop breeding strategies for each specific ...involved in NUE, the selection efficiency ... See full document

... efficient genotypes based on these root ...way of shoot dry mass, whether under ideal conditions of phosphorus availability or under stress caused by the low supply of this ...acquisition ... See full document

... new maize varieties that take up more N from the soil and increase N fixation is a crucial source of combined nitrogen in agricultural sys- ...superior maize parental lines efficient ... See full document

... between environments in the analysis of variance for flowering time and grain yield (data not ...shown). In the low-P environment, grain yield was reduced by 44% compared to the mean of ... See full document

... availability of the nutrient did not allow that there were significant differences among the N ...the efficiency of the N fertilization is around 30% due to the N losses to the soil-atmosphere system ... See full document

... (2007), in a field experiment and sprinkler system, observed an increase on foliar N content when applied this nutrient until the dose of 77 kg ha -1 ...accumulation of aboveground part when ... See full document

... variability of 24 common bean genotypes considering the root system in a Red-Yellow clay soil, with application of two levels of P per hectare, 20 and 80 kg P 2 O 5 , and noted that the ... See full document

... resolution of 400 dpi, as described by Bouma et ...class of diameter (d), obtained by WinRhizo as lateral root length (LLAT) with diameter less than or equal to ...components of nitrogen and ... See full document

... evaluate nitrogen use efficiency (NUE) have been carried out using early growth ...accuracy in early indirect selection for NUE in ...endogamic maize strains were evaluated ... See full document

... control of N efficiency are expressed in accordance with the degree of N ...reports in the literature described the use of diallel crosses to study the genetic control and ... See full document