Chemical control of shoot growth and axillary inflorescence development in Chrysanthemum morifolium Ramat with 2,3-dihydro-5,6-diphenyl-1,4-oxathiin

摘要: SummaryA substituted oxathiin (code name UBI-P293) was wholly effective as a growth retardant on pot-grown Chrysanthemum morifolium ‘Bright Golden Anne’, tall cultivar, in single foliar spray at concentrations up to 2 000 mg a.i.l-1. The application must be made later stage of than is normally recommended for daminozide; the delays flowering were similar those recorded daminozide, i.e., less with chlorphonium chloride or piproctanyl bromide. Unlike UBI-P293 did not appear change flower colour dark pink cv, Regal Anne. At higher levels compound induced further decreases stem extension and also inhibited development 50% more axillary inflorescences, though need manual disbudding entirely eliminated. In order achieve both height control substantial effect one operation concentration timing its critical. Too high an ‘early’ sta...