Factors Affecting Root of Stem Cuttings of Salt Desert Shrubs

Abstract

Several variables were identified that affect rooting of stem cuttings of fourwing saltbush (Atriplex canescens), cuneate saltbush (A. cuneata), shadscale (A. confertifolia), spiny hopsage (Grayia spinosa) and greasewood (Sarcobatus vermiculatus). Differences in rooting were found among different individuals within the same population. Rooting varied with season of collection and with concentration of hormone application. There was an interaction between the effects of season of collection and concentration of applied hormone. Longer fourwing saltbush cuttings rooted better than shorter ones, and woody basal portions of new leaders rooted better than herbaceous tips. Sex of dioecious saltbush species was generally not an important factor in rooting success. Cuttings from greasewood plants grown in a greenhouse rooted better than field-collected cuttings.