Arsenic Translocation in Nutsedge Tuber Systems and Its Effect on Tuber Viability
- 1 January 1967
- Vol. 15 (1) , 13-+
- https://doi.org/10.2307/4041056
Abstract
Purple nutsedge (Cyperus rotundus L.) was grown under greenhouse conditions as single tubers and various tuber chain systems. Single and repeated applications of amine methylarsonate were made to shoots of single tubers and shoots of terminal tubers in chain arrangements, and visual toxicity symptoms were noted in shoot growth both from treated tubers and from other tubers in chain arrangements. Arsenic (As) was translocated (as indicated by As content) laterally to tubers separated by at least 4 tubers from the treated shoot. The tuber on the opposite end of the chain from the treated shoot tended to be higher in As content than the middle tubers, and translocated As tended to be higher in tubers from which active growth was present or developed. No apparent relationship was found between As content of tubers and their ability to produce new shoots. There was some tendency for tubers to produce more than 1 shoot in the initial regrowth following treatment. Tuber lethality following repeated treatments evidently was due to depletion of food reserves and/or bud supply from increased sprouting and not to the accumulation of a specific level of As in the tuber.This publication has 0 references indexed in Scilit: