Interspecific hybridization between Coffea arabica L. and tetraploid C. canephora P. ex Fr. 2: Meiosis in F1 hybrids and backcrosses to C. arabica
Meiosis was studied in Coffea arabica, in induced tetraploid C. canephora, in their F1 hybrid (arabusta hybrid) and in backcross generations of the hybrid with C. arabica as recurrent parent. Irregularities were observed, consisting of univalents (especially in the arabusta hybrid), multivalents (especially in tetraploid C. canephora) and uneven distribution of chromosomes at first anaphase. Chromosome distribution was improved by backcrossing. Meiotic irregularities were negatively correlated with pollen fertility
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| Format: | biblioteca |
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1985
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| Subjects: | COFFEA ARABICA, COFFEA CANEPHORA, TETRAPLOIDE, HIBRIDACION, MEIOSIS, RETROCRUZAMIENTO, NUMERO DE CROMOSOMAS, HIBRIDACION INTERESPECIFICA, ARABUSTA, |
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