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
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.
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.