Abstract
Sorghum is a recalcitrant crop for Agrobacterium-mediated genetic transformation. Several parameters related to Agrobacterium-mediated transformation were tested to optimize sorghum transformation frequencies. In this study, we evaluated pretreatment of sorghum variety Tx430 immature embryos using Agrobacterium strain GV2260. Pretreatment of immature embryos with heat (43°C) treatment for 15 or 21 min, and centrifugation resulted in a transformation efficiency of up to 1.9% of immature embryos treated. Although further optimization to enhance transformation efficiency is required, this study contributes to the genetic validation of genes of interest and molecular breeding in sorghum plants.
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