Aim-To study the reproductive part in flower of China rose.

Principle-The male reproductive part of a flower are the stamens collectively called androecium and the female reproductive parts are the pistil collectively called ynoecium. The individual units of stamen consists of a filament which bear the antherlobes: Gynoecium consists of stigma, style and ovary. There are various differences found in both of stamens and carpels of different flowers.

Required material-China rose flowers, needles, foreceps, razor, brush, slide coverslips, watch glass, magnifying glass, disecting microscope, compound microscope.

Procedure-

1. Observe the lower with naked eye, hand lens, or under a disecting microscope. Study their reproductive parts and count the number of stamen and record their cohesive and adhesive features carefully.

2. After that cut L.S. of flower and place it on a slide and observe its various characters like placement of anthers, position of ovary.

3. Now mount “one stamen on a slide and observe its characters like, attachments of filaments to anther, dehiscence of anther lobes.

4. Mount the pistil on side and study style, stigma and ovary. Cut the TS. of ovary and observe numbers of locules, type of placentation.

Observation

Inflorescence-Solitary Axial or Terminal.

Flower–Bracteate, bracteolate, pedicellate, regular, complete, actinomorphic, bisexual, pentamèrous, hypogynous, cyclic. Epicalyx-3-7 tepals polytepalous .0r apotepalous, cycic, green.

Calyx Sepals 5, gamosepalous, green, hairy, valvate aestivation, persistent.

Corolla–Petals 5, polypetalous, fused at the base with staminal tube, twisted

aestivation, large and attractive clawed petals.

Androecium-Stamens infinite (), monoadelphous, filaments united to form staminal tube around the style and ovary, staminal tube fused below with petals (epipetalous). Anthers monothecous, basifixed, reniform and extrose. dehiscence is longitudinal.

Gynoecium-Penta to multicarpellary, syncarpous, ovary superior, pentalocular, axile placentation, style passing through the staminal tube, stigma branched and may be 5 to infinite in number.

Fruit–Capsule

Foral formula

TS. of Ovary

Floral diagram

Characters to Identify Farmily (i) Reniform, monothecous anthers, (ii) presence of epicalyx, (iii) fruit capsule, (iv) stamens infinite ∞ , monoadelphous filaments united and fuse to form long staminal tube, (v) axile placentation

Classification-

Kingdom – Plantae

Subkíngdom – Phanerogamia

Division – Angiospermae

Class – Dicotyledonae

Subclass – Polypetalae

Series – Thalamiflorae

Order – Malvales

Family – Malvaceae