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Inheritance and transfer of multiple flower character from capsicum chinense into capsicum annuum



Inheritance and transfer of multiple flower character from capsicum chinense into capsicum annuum



Euphytica 33(3): 769-778



C. annuum L. produces a single flower and thus a single fruit per branching node. In contrast, C. chinense Jacq. yields .gtoreq. 2 flowers per node. If genes for multiple-flowers per node could be transferred from C. chinense to C. annuum, it might be possible to breed C. annuum varieties with a more concentrated fruit set and potentially higher yield. Using progeny from an interspecific cross between C. annuum cv. NM 6-4 and C. chinense CA4, it has been determined that a minimum of 5 independently segregating chromosomal regions control the difference in flowering behavior between these 2 accessions. One of the segments is located on a translocated chromosome. Epistatic interactions among independent chromosomal regions appear to play a major role in the determination of this trait. Although it is unlikely that the multiple-flower character can be transferred to C. annuum in its full intensity while maintaining a horticulturally-acceptable phenotype, it may be possible to breed varieties which produce an average of > 1.5 flowers per node, a value 50% higher than existing C. annuum varieties.

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Accession: 005697914

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