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Please help. I am a law student researching a problem.
(That means my grasp of science is limited!) Do situations exist where a farmer who has a seedless orange crop ever has other bees fly in and pollinate his crops (and render them useless since they'll have seeds?) Is anything written about this? Thanks, Barbara |
#2
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The seediness of some cultivars (cultivated varieties) such as
mandarins, tangors and tangelos is increased due to cross-pollination. Often, the undesirable cross-pollination is prevented by not growing trees of other cultivars near enough for pollination to occur, rather than trying to exclude the bees. Navel oranges are genetically seedless and pollinators, such as bees, do not need to be excluded for them to produce seedless fruit, even if other cultivars are nearby. Citrus pollination http://home.att.net/~oc_crfg/eunice-jun03.htm Sex, Seedlessness, and New Varieties http://ucce.ucdavis.edu/files/fileli...2017/16892.pdf There are crops where pollinators, such as bees, have to be excluded to prevent seed formation, as in seedless cucumbers grown in greenhouses. Pineapples are naturally pollinated by hummingbirds, which are banned from Hawaii to prevent cross-pollination and seed formation in pineapple fruit. Seedless watermelons must be cross pollinated in order to stimulate development of seedless fruit. Seedless grapes must be pollinated and fertilized. The tiny seed then aborts early in development so the fruit is essentially seedless. There are several mechanisms for seedless fruit development. Exclusion of pollinators is just one. Seedlessness in fruit is usually due to parthenocarpy. In most seedless grapes, it is due to stenospermocarpy. David R. Hershey Barbara Beatie wrote: Please help. I am a law student researching a problem. (That means my grasp of science is limited!) Do situations exist where a farmer who has a seedless orange crop ever has other bees fly in and pollinate his crops (and render them useless since they'll have seeds?) Is anything written about this? Thanks, Barbara |
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