INSTITUTO DE FISIOLOGIA VEGETAL
Unidad Ejecutora - UE
congresos y reuniones científicas
Spectral reflectance variations in two maize hybrids as response to abiotic stress
C. WEBER; H.A. ACCIARESI; E.J. RODRIGUEZ; M. ANTONIETTA; J.J. GUIAMET; J.O. TOCHO
Congreso; 22nd General Congress of the International Commission for Optics (ICO-22); 2011
International Comission for Optics
Abiotic stresses produce significant yield declines in Maize. High plants density, increase these stresses effect. To remedy it, photosynthetic activity maintenance even under unfavorable conditions is required. Senescence delay induced by stress in stay-green genotypes (SG) could contribute to maintaining photosynthetic capacity. In this work we observed differences in reflectance curves of two hybrids (SG and no SG or conventional hybrids) when population level was increased. Significant differences in chlorophyll absorption spectral region were observed. Therefore spectral signatures studies maize could help to understanding the physiological basis of SG character to predict the growing conditions in which these hybrids would express their production potential. In addition, knowledge of these physiological basis may allow the spread maize crops in regions with high probability abiotic stress occurrences.