Efeito da densidade das sementes sobre o teor de proteína e lisina do endosperma e do germe, em milho
Palavras-chave:
milho opaco-2, teor lisina, endosperma translúcido, proteína zeína, densidade sementesResumo
The objettive of this experiment was to study the influence of kernel density on protein and lysine content of the endosperm and germ in the S, generation of opaque-2 maize whose endosperm presented translucent spots. Kernels of Sj generation were classified as opaque, little translucent and much translucent according to endosperm texture. Kernels of S; generation were classified according to endosperm texture, in the same way as S] generation, and according to density, using the following class intervals: less than 1.150; 1.150 - 1.175; 1.175 - 1.200; 1.200 - 1.225; 1.225 - 1.250 and 1.250 and greater. Thirty-nine progenies were obtained with different combinations of these factors. Progenies with 1.250 and greater density presented better endosperm protein content, and progenies with less than 1.150 density presented better germ protein content. Kernel density had no influence on endosperm or germ lysine content. Correlations between the four characters, protein or lysine in the endosperm or germ, suggest the possibility of selecting progenies with greater content of any two of them independent of kernel density, with the exception of protein and lysine in the endosperm of progenies with 1.200 and greater densities
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