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Unformatted text preview: of ovarybearing female flowers. A banana plant in full bloom. The elongate, pendant, bisexual flower stalk has purple bracts at the end resembling a large bud. Some of the basal purple bracts have fallen away exposing clusters of female flowers. Farther up on the stalk (farther from the apex) are clusters of immature bananas that developed from clusters of ovarybearing female flowers. The botanical term parthenocarpy refers to the The botanical term development of the ovary of a flower into a fruit without fertilization. Fruits that develop parthenocarpically are typically seedless. Some seedless fruits come from sterile triploid plants, with three sets of chromosomes rather than two. The triploid seeds are obtained by crossing a fertile tetraploid (4n) plant with a diploid (2n) plant. Most bananas purchased at your local supermarket came from sterile triploid hybrids. The fruits developed parthenocarpically and are seedless. The cultivated banana is often listed The cultivated banana is often listed in botanical references as Musa x paradisiaca (Musaceae), although it is actually a complex hybrid derived from two diploid Asian specie...
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This document was uploaded on 03/10/2014 for the course AGRO 1001 at LSU.
- Fall '11