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Abstract
6-Furfurylaminopurine (kinetin) applied directly to the poinsettia (Euphorbia pulcherrima willd.) bud at 1 ppm was effective in inducing axillary shoot stimulation.
Abstract
Conventional leafburn evaluations were compared with a new root cell plasmolysis technique to test azalea cultivars (Rhododendron sp.) for salt tolerance. Plasmolysis was a more rapid indicator of salt tolerance than leafburn evaluation, and the technique was an acceptable method of evaluating azalea salt tolerance. Results of this research indicated that the salt-tolerant group contained those species and cultivars considered sun-tolerant, which are characterized by large leaves, coarse stems, and rapid growth. Kurume azaleas were among those determined to be salt-sensitive.
Abstract
Through controlled ventilation, hot air was exhausted and ambient air was drawn in and evaporatively cooled during humidification. This process lowered the temperature to more acceptable levels and cuttings from 30 species of plants were propagated successfully. Ventilation reduced fungal growth and permitted the use of shading during exceptional warm conditions.
Abstract
Ilex cornuta ‘Burfordii’ holly plants were maintained at 3-4°C for 0, 2, 4, 6 or 8 weeks. Following these treatments, the number of flowers to develop were greatest on plants receiving 6 or 8 weeks of chilling. Time required for flowering to begin and the duration of flowering was shortened by the longer exposures to cold treatment
Abstract
Suppressed growth and chlorotic leaves of Japanese holly (Ilex crenata, Thunb. ‘Hetzii’) when grown in hardwood bark, were caused by the uptake of excessive amounts of available Mn in bark leachates.