COMPARISON OF DIPLOID AND TRIPLOID SUGAR BEETS

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Abstract
In a small replicated field trial, percentage sugar and root weight were negatively correlated in both diploid and triploid individual beets, but the decreases in percentage sugar for every 100-gm. increase in root weight differed significantly, being on the average 0.34% for the diploids and 0.17% for the triploids. As root weight increased beyond 900 gm. the yield of sugar per 100 gm. of root weight increased more rapidly in the triploids than in the diploids. Under the conditions of this test, triploid beets exceeded the diploids in root weight by 12.2%, in yield of sugar per beet by 14.9%, and in dry top weight by 17.8%. The triploids exceeded the diploids in area index of the leaves by 34.4% and in area index of the stomata by 42.6%.