UGA HORT 2000 - HORT2000 (4 pages)

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HORT2000



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HORT2000

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Pages:
4
School:
University of Georgia
Course:
Hort 2000 - Hort Science
Hort Science Documents

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HORT2000 09 17 2014 Types of Fruits Berries Berry simple fruit and seeds created from a single ovary o Pepo berries skin is hardened cucurbits o Hesperidium berries with a rind citrus Pome Some or all of the flesh is derived not from the ovary but from some adjacent tissue ex apples and pears Drupe Outer flesh part exocarp or skin and mesocarp or flesh surrounds a shell the pit or stone of hardened endocarp with a seed inside ex olive peach apricot cherry coffee Aggregate Fruits Can be aggregates of o Drupes raspberry or o Achene strawberry Multiple fruits Fig Pineapple Osage orange Plant Reproduction and Development Types of plant reproduction Asexual entire plants or plant parts form the next generation Sexual specialized cells gametes unite through fertilization to produce the next generation Asexual propagation The reproduction of new plants from the stems leaves or roots of a parent plant No seeds are used just portions of the parent plant which are placed in soil Sexual reproduction Two steps o Pollination transferring pollen from anthers to stigma o Fertilization fusion of sperm with egg and polar nuclei POLLEN The shape and form of pollen is related to its method of pollination Insect pollinated species have sticky of barbed polen grains Wind pollinated species are lightweight small and smooth Getting Pollinator s attention o Plants advertise their pollen and nectar Animal pollinators bees o Most important insect o Live on the nectar and feed larvae o Also eat the pollen o Guided by sight and small o See yellow and black colors also ultraviolet light not red Birds o Birds have a good sense of color they like yellow or red flowers o Birds do not have good sense of smell so bird pollinated flowers usually have little odor o Flowers provide fluid nectar in greater quantities than insects o Hummingbird pollinated flowers usually have long Mammals bats and mice o Bats pollinate at night so flowers are white o Mouse pollinated flowers are usually inconspicuous



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