Plant research. Technician grafting a sweet potato (Ipomoea batatas) plant (right) onto a virus- sensitive indicator plant (left) before performing agricultural experiments on inherited susceptibility to disease. This research was performed for the United States Department of Agriculture at the Beltsville Agricultural Research Center,Maryland,USA | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / US Department of Agriculture |
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