Module 3 : Physiology

Lecture 18 : Reproductive Biology (Part-I)

 

(B) Sporangiospores: These are non-motile spores produced inside the sporangia. These spores are dispersed by wind and they germinate upon suitable conditions. These spores are found in fungi and they grow to give new mycelium. 


(C) Chlamydospores: These are thick walled resting spores produced directly from hyphal cells. These spores are capable of storing large quantitity of food material and these spores are capable of storing for long period.


(D) Oidia: In this condition, hyphae of growing fungi break open to form oidium which behaves like spores. These spores are thin walled and do not store large food material. The oidia are produced from fungi when they have excess water, sugar and certain salts. Upon immigrate release of oidia, they germinate to form new fungi otherwise these spore don’t survive harsh conditions.


(E) Conidia: These are non-motile spores produced singly or a chains by constriction at the tip or lateral side of special hyphal branches, called conidiospores. They are produced exogenously, dispersed by wind and germinate directly giving out germ tubes.