Asexuapropagation and clonal propagation
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Some agricultural and horticultural crops such as sugarcane, potato, banana, and citrus propagate asexually through vegetative means rather than sexually from seeds. There are several reasons for this type of asexual reproduction: many of the crops are perennial plants that show reduced flowering and seed set or do not flower at all; propagating asexually avoids inbreeding depression in crops that are cross-pollinated and highly heterozygous; and some species are interspecific hybrids.
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Asexuapropagation and clonal propagation
- 1. PRESENTED BY: Pawan Nagar Reg. no.: 04-2690-2015 M.Sc.(Fruit Science)
- 2. Crops which are propagated asexually or by vegetative means are known as Asexually propagated or vegetatively Propagated or Clonal crops.There are some agricultural (Sugarcane,Potato,Sweet Potato,etc)and horticultural (banana,mango,citrus,pears,peaches,litchi,etc)crops that propagates by asexual means.the main reasons of asexual reproduction are 1)reduced flowering and seed set, 2)non flowering in many cases. 3)to avoid inbreeding depression in certain crops and 4)apomixes in some species.
- 3. 1) most of these plants are perennial and annual. E.g.sugarcane ,potato,sweet potato 2) Many of them shows reduced flowering and seed set and many varieties do not flower at all 3) They are invariably cross-pollinated. 4 ) They are highly heterozygous and show severe inbreeding depression. 5) Many species are interspecific hybrid. E.g.Banana ,sugarcane. 6) Many species shows wider adaptation. 7) These crop consist of a large number of clones. 8) Progeny derived from single plant through asexual reproduction.