Principles of Plant Breeding (2+1)

Sub-aerial modification of stem

These modified stems gives rise to new plants -3 types
a. Runners.E.g., Wood Sorrel (Oxalisacetsella),Strawbery(Frageria Sp.)Water lettuce etc.
b. Stolans.E.g., Jasmine(JasminumSp), Tecorna(Tecornagrandifalia)
c. Suckers: Like the stolans lateral branch developing from underground part of the stem.E.g., Chrysanthemum(Chrysanthemum indicum), Bamboo(Dendrocalamussp), banana (Musa Sp.)
d. Modified Roots Normal roots of wood apple are used for propagation. Some modified roots such as tuberoses, roots of sweet potato and Asparagus give rise to new individuals.