Some vascular variations in the sweet potato root influenced by mineral nutrition

Some vascular variations in the sweet potato root influenced by mineral nutrition

1967

A:PS

Sweet potato roots were grown in a 3 3 N x P x K factorial field experiment then harvested and prepared for histological examination. A statistical and histological technique was devised to determine quantitative vascular differences among roots grown under the various nutritional treatment. Histological examinations were made to determine the number of secondary xylem vessels associated with the continuous cambium. Roots which grew in the presence of high levels of N with high rates of K had an increased number of secondary xylem vessels associated with the continuous combial zone and an increase in width of the contonuous cambium copared with roots receiving high rates of N without Z. roots grown with high levels of P with intermediate and high rates of N had an increased number of secondary xylem vessels associated with the continuous cambial zone when compared with the control or with high rates of P without N. The differences were statistically significant at the .05 level. [AS]

v.91:478-485, AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE, PROCEEDINGS

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