Different modes of segregation in late-season culture in the characters associated with grain filling in F2 progenies of the rice plants

aging chlorophylle chlorophylls clorofilas envejecimiento espigueo f2 hybrids feuille grain granos heading hinchamiento de la semilla hojas hybride f2 leaf area leaves madurez maturity oryza sativa peso poids remplissage du grain seed filling segregation superficie foliar surface foliaire vieillissement weight