THE EFFECT OF TOP ENVIRONMENT AND FLOWERING UPON TOP-ROOT RATIOS

Abstract
The environment in which the tops grew had a marked effect upon top-root ratio. This was not consistent, however, as neither a given photoperiod or a certain level of temp. produced like ratios with different spp. of plants. Flowering was consistently related to top-root ratio, the relative amt. of roots being smaller as the reproductive state was entered. It appears that the composition and reserve conditions within the top is obviously a large* if not the controlling factor in the production of roots and so, the top-root ratio.