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Morphological attributes of root system of maize genotypes contrasting in drought tolerance due to phosphorus stress. Repositório Alice
CANTÃO, F. R. de O.; DURAES, F. O. M.; OLIVEIRA, A. C. de; SOARES, A. M.; MAGALHAES, P. C..
This work was carried out with the objective of evaluating morphological attributes of root system and growth characteristics of root and plant canopy of inbred lines selected for drought tolerance from the Embrapa Maize and Sorghum breeding program. Two drought tolerant and two sensitive inbred lines were seeded in seedling beds with different phosphorus levels (4 and 20 mg.dm-3). The experiment was manually seeded, using 0.20m row spacing and plants 0.20m apart in the line. The experimental plots consisted of four 1.2m long rows with five plants per linear meter. A randomized complete blocks design with three replications was used. Two evaluations of root system morphology using the digital image analysis system WinRHIZO and also evaluations of roots and...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Milho; Marcadores morfológicos; Fósforo; Raízes; WinRHIZO; Corn; Morphological markers; Phosphorus; Root.
Ano: 2008 URL: http://www.alice.cnptia.embrapa.br/handle/doc/491893
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Screening of inbred popcorn lines for tolerance to low phosphorus. Repositório Alice
SANTOS, O. J. A. P.; GONÇALVES, L. S. A.; SCAPIM, C. A.; SOUSA, S. M. de; CASTRO, C. R.; BABA, V. Y.; OLIVEIRA, A. L. M. de.
Increasing phosphorus use efficiency in agriculture is essential for sustainable food production. Thus, the aims of this study were: i) to identify phosphorus use efficiency (PUE) in popcorn lines during the early plant stages, ii) to study the relationship between traits correlated with PUE, and iii) to analyze genetic diversity among lines. To accomplish this, 35 popcorn lines from Universidade Estadual de Maringá breeding program were studied. The experiment was conducted in a growth chamber using a nutrient solution containing two concentrations of phosphorus (P): 2.5 ?M or low P (LP) and 250 ?M or high P (HP). After 13 days in the nutrient solution, root morphology traits, shoot and root dry weight, and P content of the maize seedlings were measured....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: WinRHIZO; Estresse abiótico; Pipoca; Fósforo.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1057666
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