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Annals of Botany 80: 693-695, 1997
© 1997 Annals of Botany Company

COMMUNICATION

The Efficiency of Natural and Artificial Pollinators in Plantain (Musaspp. AAB group) Hybridization and Seed Production

RODOMIRO ORTIZ and JONATHAN H. CROUCH+,

Plantain and Banana Improvement Program, International Institute of Tropical Agriculture, High Rainfall Station, PMB 008, Nchia-Eleme, Rivers State, Nigeria

September 28, 1996 ; June 30, 1997 .

ABSTRACT

Plantain-derived tetraploid hybrids are routinely crossed inMusabreeding programmes with diploidMusaaccessions for the efficient generation of putative triploid hybrid seed. However, natural open pollination of these same tetraploid hybrids also consistently generates viable seed. The mean germination rate of such open pollinated seed was observed to be higher than that of seed generated from artificial pollinations. This may suggest that tetraploidMusahybrids played a much more important role in the evolution of triploidMusalandraces than previously considered. Moreover, the elite performance of certain hybrids generated through such open pollination offers possibilities of newMusabreeding paradigms. The inferences of these observations forMusaevolution and the implications forMusabreeding are discussed.Copyright 1997 Annals of Botany Company

Banana; hybrid seed; Musa; open pollination; plantain; polycross; synthetic


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