Breeding of Vegetable, Spice and Tuber crops (2+1)

III.Natural vegetative reproduction

Natural vegetative reproduction

vegetative reproduction

• In nature, multiplication of certain plants occurs by underground stems, sub aerial stems, roots and bulbils.In some crop species, underground stems (a modified group of stems) give rise to new plants. Underground stems are of four types: viz. rhizome, tuber, corm and bulb.
 
The examples of plants which reproduce by means of underground stems are given below:



• Rhizome: Turmeric (Curcuma longa), Ginger (Zingiber officinale)
• Tuber: Potato(Solanum tuberosum)
• Corm: Arvi (Colocasia esculenta), Bunda (C. antiquorum)
• Bulb: Garlic (Allium sativum), onion (A. cepa)
• Sub aerial stems include runner, sucker, stolon, etc.
• These stems lead to vegetative reproduction in mint (Mentha sp), strawberry, banana, etc.
• Bulbils are modified forms of flower. They develop into plants when fall on the ground. Bulbils are found in garlic.