Control of Salpiglossis sinuata Height with Plant Growth Regulators

Abstract

<jats:p><jats:italic>Salpiglossis sinuata</jats:italic> R. <jats:italic>et</jats:italic> P., a floriferous member of the Solanaceae, was studied for potential as a flowering potted plant when modified by growth retardants. Seedlings of an inbred line P-5 were covered with black cloth for an 8-hour photoperiod to permit vegetative growth to ≈16 -cm-diameter rosettes. Plants were then exposed to an 18-hour photoperiod for the duration of study. Flowering occurred 40 days after the plants were transferred to long days. Neither spray applications of uniconazole at 10, 20, 40, or 100 ppm, nor chlormequat chloride at 750, 1500, or 3000 ppm significantly retarded plant height. Applications of daminozide, ranging in concentration from 1000 to 5000 ppm, alone and in combination with chlormequat chloride, were effective at retarding plant height; however, concomitant restriction of corolla diameter was frequently observed. Chemical names used: 2-chloro- <jats:italic>N,N,N</jats:italic> -trimethylethanaminium chloride (chlormequat chloride); butanedioic acid mono(2,2-dimethylhydrazide) (daminozide); and <jats:italic>(E)</jats:italic> -1-(p-chlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl) -1-penten-3-01 (uniconazole).</jats:p>

Interaction of Chlormequat Chloride and Photosynthetic Photon Flux on the Growth and Flowering of Lantana Camara Subsp. Camara

“…The young and the new-expanding leaves of plants, after the CCC application, presented chlorosis, especially in the margins which was not existent on leaves formed later. Chlorosis symptoms after treatments with CCC have been reported in other ornamental plants (Needham and Hammer, 1990;Rand, 1993).…”

Laboratory Exercise on the Segregation of Flower Color and Related Genes Using Velvet Flower (Salpiglossis sinuata Ruiz et Pavon)

“…Usually seeds are sown in soil flats or plug trays. Germination completes in 7 to 10 d. At the two true-leaf stage, seedlings are for salpiglossis can be achieved by using such growth regulators as chlormequat chloride (Cycocel), daminozide (B-Nine SP) and uniconazole (Sumagic) (Needham and Hammer, 1990). At an early stage of growth, plants tend to become rossetted especially under short day conditions.…”