Who developed the boysenberry hybrid fruit in California during the 1930s?

Answer

Rudolph Boysen

The boysenberry is identified as a successful horticultural cross that was not naturally occurring. This specific hybrid fruit was developed by Rudolph Boysen. This development took place in California during the 1930s. The goal of this breeding effort was to combine desirable characteristics such as size, flavor complexity, and vigor inherited from its parent plants.

Who developed the boysenberry hybrid fruit in California during the 1930s?
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