Embryo development

Embryo development in Angiosperms

1. Presented By Dr . V. RAMSEH , Assistant Professor & Head i/c Department of Botany Vivekananda College Tiruvedakam West – 625 234 [email protected] [phone] DEVELOPMENT OF EMBRYO IN PLANTS

2. What is Embryo? Fertilized Zygote or Oospores developed into Embryo

3. DEVELOPMENT OF EMBRYO Based on the mode of origin of proembryo 5 Types in Angiosperms 1. Crucifer type Basal cell plays little or no role 2. Asterad type Basal and terminal cells play an important role The terminal cell of the 2-celled proembryo divides by a transverse wall Basal cell plays a little or no role in the development of the embryo. 3. Solanad type Basal cells usually forms a suspensor cells 4. Caryophyllod type Basal cell does division 5. Chenopodiad type Both basal and terminal cells take part in the development of the embryo.

4. DEVELOPMENT OF DICOT EMBRYO – CAPSELLA Hanstein (1870) worked out the details of the development of embryo in Capsella bursa- pastoris , a member of Crucifeae .

5. Developmet of Dicot Embryo

6. DEVELOPMENT OF MONOCOT EMBRYO – LUZULA

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