EVTERSPECIFIC HYBRIDIZATION IN CHORISIA

摘要

Interspecific hybrids were raised for the first time between Chorisia insignis H..B. & K and C. speciosa St. Hil, the two introduced ornamental arborescent species. Morphologically the F1 showed overall dominance of the male parent C. speciosa. However, the size of flower exceeded that of the parents, Both the parents had 43 II at metaphase with regular meiosis and high pollen fertility. The meiosis in F_1 was also orderly with the highly fertile uniform pollen indicating very close genetic homologyand ecospecific level of differentiation, between the two parental species.