Reproductive Biology (Part-II)

5. Vegetative Propogation: This is another mode of asexual reproduction where vegetative part of the organism break and give rise to new organism. This mode of reproduction is common in higher plants where body parts such as root, stem and leaves takes part into vegetative reproduction. Under natural conditions, plant body parts takes part in vegetative reproduction. The different examples in this catagrory are as follows:

(A) Roots: The modified root planted in soil develop shoot from the bud present on root and adventiuos root at the base to give rise new plant (Figure 19.1). Ex. Sweet potatos, Topioca, Yam, Dahila and Tinospora.

 

Figure 19.1: Different examples of vegetative reproducing by roots.

(B) Stems: Underground modified stems grow into new plants and help in vegetative reproduction. There are different varients stems, these are as follows:

(i) Suckers: These are shoot grow horizontally in soil and they come out to form new arial shoots. Once it is break from the parent plant, it grows as independent plant. Ex. Mint, Chrysanthemum