Efectos de la putrescina en diferentes ciclos de selección masal divergente del maíz harinoso mosquera i sin. 2 afectados por las heladas

During 1989, at the Tibaitata Research Center, an experiment plot was carried out. On cycles 6, 9, 12 and 15 of prolific and non prolific corn sub-populations which treated with 0, 1000, 2000 and 4000 Mm of putrescine. Six hours before aplication, the corn plants suffered chilling effects (-1.50 C/4...