1
Question
What are the two types of apomixis?
What are the two types of apomixis?
Open in App
Solution
Types of apomixis
1. Vegetative reproduction : New plant is produced from stem, leaf, buds, etc. (Seed not required).
2. Agamospermy : Seeds are produced and embryo is formed but meiosis and fertilization are eliminated. It may be :
(a) Adventive embryony : Embryo formed from cells of nucellus or integuments.
(b) Diplospory : Megaspore mother cell develops into an unreduced embryosac. The embryo is formed from unfertilized egg, (parthenogenesis) or some other cell of embryosac (apogamety).
(c) Apospory : A somatic cell in the nucellus directly forms an unreduced embryosac and the diploid egg parthenogenetically develops into embryo
Types of apomixis
1. Vegetative reproduction : New plant is produced from stem, leaf, buds, etc. (Seed not required).
2. Agamospermy : Seeds are produced and embryo is formed but meiosis and fertilization are eliminated. It may be :
(a) Adventive embryony : Embryo formed from cells of nucellus or integuments.
(b) Diplospory : Megaspore mother cell develops into an unreduced embryosac. The embryo is formed from unfertilized egg, (parthenogenesis) or some other cell of embryosac (apogamety).
(c) Apospory : A somatic cell in the nucellus directly forms an unreduced embryosac and the diploid egg parthenogenetically develops into embryo
Suggest Corrections
4
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
