An Atypical Growth of Cabbage Seedling Roots. Iii. Tissue Culture and Physiological Comparisons of Typical and Atypical Roots

Publisher Website
Google Scholar
Abstract
The atypical growth of cabbage seedling roots induced by p-chlorophenoxyacetic acid (POA) is capable of continued growth in 7 serial transfers in sterile culture, although normal roots die off after 3 transfers. Formation of the growths on the seedlings represents a large stimulation of growth and protein formation, although POA at these concns. inhibits normal root elongation. The atypical growth is not permanent: tumors will throw off normal appearing roots after removal of POA. Respiration of the tumors is in part fermentative; R. Q. values of 1.1 to 1.6 have been observed for the tumors, but only 1.0 to 1.1 for normal roots.