02267naa a2200277 a 450000100080000000500110000800800410001902400470006010000190010724501170012626000090024352014500025265000160170265000150171865000130173365000170174665000140176365000150177765000130179265300320180570000140183770000150185170000190186670000190188577300850190420538382017-04-25       2016    bl uuuu     u00u1 u    #d7 a10.18512/1980-6477/rbms.v15n2p262-2712DOI1 aRIOS, S. de A.  aEffect of post-emergent herbicides application on carotenoid concentration in green corn.h[electronic resource]  c2016  aConsidering the influence of herbicides in the metabolism of the carotenoids in corn, the objective of the present study was to evaluate the effect of herbicides and genotype on carotenoids concentration. The green corn hybrids BRS 1030 and P30F53 were subjected to a post-emergent herbicides application at 20 and 30 days after emergence. Carotenoids were extracted from corn grains and analyzed to quantify ß- and ß-carotene, lutein, zeaxanthin, ß-cryptoxanthin, total carotenoids (TC), and total of vitamin A carotenoids precursors (proVA). The application of foramsulfuron + iodosulfuron-methyl-sodium (40 + 2.6 g ha-1), nicosulfuron (20 g ha-1), mesotrione (120 g ha-1) and tembotrione (80 g ha-1 and 100 g ha-1) promoted higher concentration of carotenoids in fresh green corn. Lutein, zeaxanthin, ?-cryptoxanthin, ß-carotene, ß-carotene, proVA carotenoids, and TC concentration increased after foramsulfuron + iodosulfuron-methyl-sodium in late application (V5 to V6), nicosulfuron in both applications, mesotrione applied post-initial (V3 to V4), tembotrione (100 g ha-1) in both applications and tembotrione (80 g ha-1) in late post-application, at least for one hybrid. The content of carotenoids in the green corn kernels differed between 'BRS 1030' and 'P30F53'. Our results suggest a possibility of significant increase of carotenoids in green corn kernels through the handling of corn production with post-emergent herbicides.  aCarotenoids  aHerbicides  aCaroteno  aCarotenóide  aHerbicida  aVitamina A  aZea mays  aBiossíntese de carotenoide1 aKARAM, D.1 aBORÉM, A.1 aCARDOSO, W. S.1 aPAES, M. C. D.  tRevista Brasileira de Milho e Sorgo, Sete Lagoasgv. 15, n. 2, p. 262-271, 2016.