Plant regeneration is the first step to cotton biotechnology.We screened over 100 genotypes and found two genotypes,YZ-1 and Y668,which are very easy to regenerate.It takes about 5 to 6 months for the two genotypes from explant inoculation to plant regeneration.Meanwhile,we investigated the gene expression patterns during somatic embryogenesis (SE) in cotton.The results suggested that a complicated and concerted mechanism involving multiple pathways is responsible for cotton SE.We constructed a network to show the relationship between genes during SE.
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