Search Results
Abstract
6-(Benzylamino)-9-(2-tetrahydrophyranyl)-9H-purine (PBA) and 6-benzylaminopurine (BA) sprays effectively induced increased branching and thus the no. of terminal stem cuttings from stock plants of poinsettia (Euphorbia pulcherrima Willd.) cvs. Eckespoint C-1 Red and Paul Mikkelsen. Terminal stem cuttings taken 30 days after BA treatment were delayed in root formation and development. (2-Chloroethyl) phosphonic acid (ethephon) and 2,3,5-triiodobenzoic acid (TIBA) sprays were ineffective in increasing stock plant branching or cutting yield compared to untreated plants.
Abstract
Continuous lighting with Lucalox lamps at 58W/m2 supplementing natural daylight for 1 to 4 weeks after transplanting increased plant height, root length and fresh weight of Petunia hybrida Hort cultivar White Cascade, Tagetes erectra L. cultivar Moonshot, and Zinnia elegan cultivar Peter Pan Pink. Differences became larger between lighted and unlighted treatments as the lighting period increased. Plants lighted for 4 weeks after transplanting flowered earlier (9 to 23 days), were slightly shorter, and had larger top fresh weight than those unlighted, Impatiens sultanii cultivar Scarlet Elfin responded less than the other species.
Abstract
Specific auxin-containing formulations which contained primarily indolebutyric acid (IBA), and/or napthaleneacetic acid (NAA) were most effective in promoting rooting of terminal stem cuttings of poinsettia (Euphorbia pulcherrima Willd.).
Abstract
Continuous high intensity supplementary lighting from October to March with a combination of Lucalox and Multivapor lamps at 116W/m2 reduced the number of days to root vegetative cuttings of chrysanthemum, geranium and poinsettia and increased root number, length, and fresh weight over non-lighted cuttings. Lighting benefits were lost at 174W/m2 when foliar chlorosis developed and delayed rooting and reduced root growth. Leaf temperature of misted cuttings receiving 116W/m2 and 174W/m2 of supplementary light on sunny December days were 2.7° and 5.1°C, respectively, higher than non-lighted leaves.