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Brassicaceae family (BRASSICACEAE)

The document discusses the taxonomy and characteristics of the Brassica genus, part of the Brassicaceae family, which includes important crops such as yellow mustard and cabbages. It details the plant's morphological features, including its herbaceous stem, leaf structure, and floral characteristics like the cruciform corolla and tetradynamous stamens. Additionally, the Brassica family has significant economic importance, providing vegetables, oils, and medicinal resources.

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TOPIC - TAXONOMY OF ANGIOSPERMS (Brassicaceae FAMILY)
 INTRODUCTION  CLASSIFICATION  CHARACTERISTICS FEATURES  FLORAL FORMULA  DIAGNOSTIC FEATURES CONTENTS
• 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
Kingdom Plant Class Dicotyledonae Subclass Polypetalae Series Thalamiflorae Order Parietales Family Cruciferae Genus Brassica Species campestris Classification
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.
Inflorescence: • Racemose – A typical raceme below and corymbose above. • Flower: • Ebracteate, pedicellate, complete, hermaphrodite, actinomorphic, tetramerous, hypogynous, yellow in color.
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.
Fruit: Siliqua Floral Formula: K2+2 C4 A2+4 G(2)
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.
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.
Brassicaceae family (BRASSICACEAE)