family_leguminosae_ppt.pptx

Family leguminous

1. FAMILY LEGUMINOSAE SHIVAM YADAV BSC (HONS) FORESTRY F/121/22

2. 2 Classifica ti on Division : Spermatophyta Sub division:Angiospermae Class : Dicotyledonae Sub class : Polypetalae Series : Calyciflorae Order : Rosales Family : Leguminosae

3. FAMILY – LEGUMINOSAE / FABACEAE Sub-family 1. P ap i l ionaceae Sub-family 2. Caesal piniaceae Sub-family 3. M i mo saeae 3

4. Vegetative Charac te rs t i cs : -HABIT -ROOT -STEM - LEAVES

5. This family is also known as Papilionaceae or Fabaceae or commonly known as pea family . It is considered to be the second largest family of dicotyledonous plants. It is a terrestrial plant widely distributed in temperate and tropical countries of the world. The plants are of great economic importance. They are herbs, shrubs and trees 5

6. ROOT : The roots are tap roots, fibrous or tuberous. The outstanding feature is the presence of roots tubercles or nodules which harbor nitrogen fiing bacteria ( Rhizobium ) inside them. Plants are grown to enrich the soil with nitrogenous substances 6 R hiz o bia on Root Hair

7. ST E M : It is branched, smooth or glaucous , may be erect or weak, herbaceous or woody. Glaucous : grayish, bluish, or whitish way coating or bloom that is easily rubbed off Some are climbing with the help of leaf tendrils . 8

8. LEAVES: Alternate, Stipulate, Compound leaf mostly trifoliate Sometimes simple leaf as in Alysicarfius; 9

9. LEAF MODIFICATIONS: It is modified partly or wholly into tendril ( Lathyrus, Pisum , Vicia ) leaf base may be pulvinate (swollen leaf base). In Lathyrus afihaca the entire leaf becomes modified into a tendril; in Pisum and Lathyrus the stipules are foliaceous and highly developed, in Pisum and Vicia the leaflets are modified into tendrils. 10

10. FLORAL CHA R ACTERSTICS: -Inflorescence -Flower -Calyx -Corolla -Androecium -Gynoecium

11. INFORESCENCE: Raceme , flowers are arranged in a illary racemes

12. FLOWE R : Flowers are complete, bracteate and pedicellate . They are either actinomorphic or zygomorphic. They are hypogynous and cyclic, Pentamerous.

13. CALYX: Sepals are genera l ly 5 in number. They are usually gamosepalous and the odd sepal is always anterior in position. Aestivation- Ascending imbricate .

14. COR O LLA: Petals 5, polypetalous, papilionaceous, posterior petal outermost large – the veillium or standard; ne t two lateral ones-the wings or alae; and the two anterior and innermost united to form a boat-shaped structure – the keel or carina ; d e sc e n d in g imb r i cat e o r v e illa r y aestivation.

15. Descending imbricate / Vexillary Aestivation

16. ANDROECIUM: There are generally 10 stamens, 9 stamens united to form a tube around the ovary while the tenth stamen is free. They are polyandrous or diadelphous .

17. GYNOECIUM: It is monocarpellary, superior and unilocular . There are numerous ovules on parietal or marginal placentation .

18. FRUIT: Legume or pod

19. SEED: No n - endospe r mic. POLINATION: Entomophilous.

20. FLORAL DIAGRAM WITH FLORAL FORMULA ( PISUM SATIVUM OR GARDEN PEA):

21. THANKS!