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Brassicaceae family (BRASSICACEAE)
- 1. TOPIC - TAXONOMY OF ANGIOSPERMS (Brassicaceae FAMILY)
- 2. INTRODUCTION CLASSIFICATION CHARACTERISTICS FEATURES FLORAL FORMULA DIAGNOSTIC FEATURES CONTENTS
- 3. • Brassica belongs to mustard family (Brassicaceae). • The members of the genus are known as cruciferous vegetables, cabbages, or mustard plants. • Brassica campestris (Yellow mustard – sarson) • Habitat: Cultivated herb grown during cold season. • The plant flowers during spring. • Brassica is used as vegetable and its seeds yield oil. • Root: Tap root, branched. Introduction
- 4. Kingdom Plant Class Dicotyledonae Subclass Polypetalae Series Thalamiflorae Order Parietales Family Cruciferae Genus Brassica Species campestris Classification
- 5. STEM Title Slide 5 • Stem: Herbaceous above and woody below, erect, branched, cylindrical, slightly hairy. LEAF • cauline and ramal, simple, sessile, alternate, exstipulate, reticulate, unicostate, upper leaves entire while lower ones lyrate, sessile, hairy.
- 6. Inflorescence: • Racemose – A typical raceme below and corymbose above. • Flower: • Ebracteate, pedicellate, complete, hermaphrodite, actinomorphic, tetramerous, hypogynous, yellow in color.
- 7. Calyx: Four sepals, polysepalous, seplas arranged in two whorls of two each, sepals of inner whorl are longer, slightly petaloid, acute, inferior. Corolla: Four petals, polypetalous, each petal consists of a limb and a claw, cruciform, inferior, yellow. Androecium: Six stamens, polyandrous, Tetradynamous (4 inner long and 2 outer short), anthers basifixed, four green disk like nectries present at the base, inferior. Gynoecium: Bicarpellary, syncarpous, ovary superior, unilocular but becomes bilocular due to development of a false septum, placentation parietal, stigma bilobed, ovule numerous, stigma bifid.
- 8. Fruit: Siliqua Floral Formula: K2+2 C4 A2+4 G(2)
- 10. Diagnostic features Class . dicotyledonae - venation reticulate - flowers pentamerous. Sub class . polypetalae - petal free. Series . Thalamiflorae - flower hypogynous(ovary superior) Order parietal - carpel united to form unilocular ovary with parietal placentation. Family. cruciferae - herbs with alternate exstipulate leaves corolla cruciform , stamen tetradynamous ovary bicarpellary, syncarpous.
- 11. Economic Importance: This family contribute many products of economic value. Sources of Vegetables: The leaves, roots and inflorescence of many plants used as vegetables e.g., raddish, turnip, cabbage, etc. Source of Pot Herb: Brassica and Lepidium used as pot herb. Source of Oil: Seeds of brassica, Eruca sativa (Tara mera) is used as essential oil which is used for cooking. Source of Medicine: Sisymbrim irio is used as medicinal plant.