TYPES OF FRUIT

          CAN BE FLESHY OR DRY

          1.  IN FLESHY FRUITS, THE MESOCARP IS JUICY
          2.  IN DRY FRUITS, THE PERICARP IS OFTEN A THIN
        LAYER SURROUNDING THE SEED

    CAN BE MULTIPLE OR AGGREGATE

    1.  AGGREGATE FRUIT - FRUIT MADE UP OF MANY
        CARPELS FROM ONE FLOWER

        (EXAMPLE: RASPBERRY, STRAWBERRY, BLACK-
         BERRY)
    

    2.  MULTIPLE FRUIT - FRUIT MADE FROM CARPELS OF
        MANY FLOWERS FUSED TOGETHER

           

        (EXAMPLE: PINEAPPLE)

FRUIT TYPES

    1.  SIMPLE FRUITS - FROM A SINGLE OVARY

        FLESH MOSTLY OF OVARY TISSUE

        a. BERRY- ENDOCARP FLESHY OR SLIMY, OVARY
           MANY SEEDED

          

           TOMATO, PEPPER, GRAPE, BANANA

        b. DRUPE- ENDOCARP HARD OR STONY, ONE SEEDED

          

           CHERRY, OLIVE, COCONUT, PEACH

        c. PEPO- BERRY WITH THICK RIND

           WATERMELON, PUMPKIN, CUCUMBER
          

        d. HESPERIDIUM- BERRY WITH LEATHERY SKIN

          

 

           ORANGE, LEMON, GRAPEFRUIT

        FLESH MOSTLY OF RECEPTACLE TISSUE

        e. POME- APPLE, PEAR, QUINCE

             


DRY FRUITS - OVARY WALL DRY

FRUITS THAT SPLIT OPEN AT MATURITY (DEHISCENT)

          FRUITS SPLIT ALONG TWO SEAMS

        f. LEGUMES - PEANUTS, BEANS, MESQUITE

          

        g. SILIQUES OR SILICLES - MUSTARD, RADISH
           (HAS A REPLUM)

    SEEDS RELEASED THROUGH PORES

        h. CAPSULE - POPPIES, IRIS, LILIES

          

FRUITS THAT DONíT SPLIT OPEN AT MATURITY (IN-
DEHISCENT)

        i. SAMARA - PERICARP WINGED

                   

        j. ACHENE - SINGLE SEED ATTACHED TO
                    PERICARP AT ITíS BASE,
                    SUNFLOWER

                   

        k. CARYOPSIS - SINGLE SEED FUSED TO
                       PERICARP, CEREAL GRAINS
                       (CORN)

                                

 

FRUIT DEVELOPMENT

FERTILIZATION REQUIRED FOR FRUIT DEVELOPMENT

SEEDS SECRETE HORMONES TO INDUCE OVARY TO SWELL. IF
FERTILIZATION DOES NOT OCCUR,SEEDS WILL NOT FORM AND NO
HORMONES WILL BE RELEASED AND FRUIT WILL NOT FORM

NONFERTILIZED FLOWERS WILL PRODUCE FRUITS IF TREATED WITH HORMONES AND WILL BE SEEDLESS

SEED STRUCTURE

1. SEED COAT - OUTER LAYER OF THE SEED

2. EMBRYO -
       a. epicotyl
       b. hypocotyl
       c. radicle

hypocotyl + epicotyl = stem

radicle = root

3. ENDOSPERM OR COTYLEDONS - STORED FOOD

SEED GERMINATION

SOME SEEDS ARE DORMANT PRIOR TO GERMINATION.

BREAKING DORMANCY - REQUIREMENTS

    WATER - SEEDS ABSORB WATER, SWELL AND BURST
            SEED COAT

    TEMPERATURE - SOME SEEDS REQUIRE LOW
                  TEMPERATURES TO GERMINATE-
                  STRATIFICATION

    LIGHT - SOME SEEDS REQUIRE LIGHT FOR
            GERMINATION AND OTHERS REQUIRE TOTAL
            DARKNESS

    SCARIFICATION - DISRUPTION OF SEED COAT