differenciate between hybrid & cybrid
Answers
Answer:
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Explanation:
Somatic hybrids don't have species barrier, where as cybrids are bound to species barrier. Cybrids contain nucleus of one species but cytoplasm of both the parents(has genetic material of only one parent),where as somatic hybrids contain genetic material of both the parents.
Explanation:
What is the difference between somatic hybrids and cybrids?
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Sexual hybridization in higher plant is a valuable tool for the conventional plant breeding to improve cultivated crops. However, many desirable combinations of characters can not be transmitted through conventional methods of genetic manipulation. Secondly, conventional hybridization is limited to only very closely related species and was total failure for distantly related species as well as in sexually incompatible species. However, by using a protoplast fusion technology , it possible to fuse two genotypically different by protoplast to obtain para sexual hybrid protoplast.
Definition of Somatic Hybridization:
It is fusion between isolated somatic protoplasts under in vitro conditions and subsequent development of their product to a hybrid plant is known as somatic hybridization.
Cybrid:
Plasmid and mitochondrial genomes are inherited maternally in sexual crossings. Through the fusion process the nucleus and cytoplasm of both parents are mixed in the hybrid cell. This results in various nucleo- cytoplasmic combination. Sometimes interaction in the plastome and genome contribute to the formation of cybrid. Cybrids in contrast to conventional hybrids, possesses a nucleus genome from only one parent but cytoplamsmic gene
Cybridization:
The process of protoplast fusion resulting in the development of cybrid is called as Cybridization.
In Cybridization heterozygosity of extra-chromosomal material can be obtained, which has direct application in plant breeding. Studies during last decade have revealed that the process of protoplast fusion may be a useful too for the induction of genetic variability and combination of traits which do not exist in nature.