0 citations

Histological Responses of Bean Plants to Tetrahydrofurfuryl butyrate

Botanical Gazette1940Vol. 102(2), pp. 373–381

Abstract

There are striking differences between the reaction of bean to tetrahydrofurfuryl butyrate and the other substances thus far investigated. The most prominent is the complete absence of root primordia arising either as a part of the tumor or near it. The xylem is the most active tissue, which with its derivatives forms by far the largest part of the callus, although the phloem is also involved. The callus, while having differentiated a considerable number of wound tracheids, some of which tie back with the vascular tissue of the stem, is largely composed of parenchymatous cells, scattered among which are groups of extremely large cells and areas of meristematic activity. The cavity formed by disintegration of the central region of the pith tends to be filled in with parenchymatous cells derived in part from the pith and in part from the xylem. Cambial activity is stimulated and produces a little more secondary xylem than in untreated stems. There is a moderate amount of activity in the endodermis, with no differentiation of vascular tissue. The endodermis, however, responds to the stimulation of tetrahydrofurfuryl butyrate farther down the stem from the surfaces of application than does any other tissue. Another striking difference is the localization of the response within 1-3 mm. of the site of application.

Abstract

Related Papers