A multi-location line X tester evaluation of twenty-three tropical late white inbred maize lines, crossed to four non-inbred testers [student's study]

crop yield cultivos tropicales descendance endogamia ensayo environnement fitomejoramiento heterosis hybride hybrids inbreeding mais maize medio ambiente plant breeding plante de culture tropicale progenie progeny rendement des cultures rendimiento de cultivos selection testage testing tropical crops vigueur hybride zea mays