Abstract
Abstract Sweet potato plants, Ipomoea batatas (L.) Lam. cv. Porto Rico Red with the storage root production zone subjected to 2.5% oxygen for 81 days, showed an almost complete repression in storage root number and weight, when compared to plants subjected to 21% oxygen. When plants were grown in 2.5% oxygen for 81 days followed by 21% oxygen for 28 days, there was no difference in storage root number when compared to plants grown in 21 % oxygen for the entire period. Alteration of the storage root zone oxygen concentration appears to provide an excellent method for studying the initial biochemical changes occurring during storage root induction and/or development.
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