Abstract
As part of a large-scale genomics project focused on understanding and improving the Shepody potato, we have increased the regeneration and transformation rates for this cultivar. Using combinations of auxins and trans-zeatin, leaf and stem explants were evaluated for callus induction and shoot formation. Several plant growth regulator combinations resulted in higher plant regeneration rates over a previous method. Using the best combination of auxin and cytokinin in combination with Agrobacterium-mediated transformation, we regenerated independent putative transformants from 59.5% of the total explants plated. We ran PCR on a sample of the plants to confirm transformation and 47.1% were nptII positive; giving a confirmed transformation rate of 28.0%.
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