Effeots of High Temperature and Genotype on the Growth of Excised Roots of Arabidopsis Thaliana

Abstract

The effects of a high temperature (31'5°C), and the addition of vitamins (thiamine plus biotin) on the growth of excised roots of four clones of A. thaliana derived from the strains EST, Pi, BLA, and 1018/6 are described. Growth response of the roots to these treatments was different from that of the whole plant of the same strain. The vitamin requirement of the roots of strain 1018/6 was greater at 31· 5°C than at 27°C.