Anthurium Culture with Emphasis on the Effects of Some Induced Environments on Growth and Flowering

Efficiency in growth and flowering of the anthurium plant depends upon a number of factors, of which growing medium and sunlight level may be considered the two most important factors. This paper gives the results of testing bagasse as a medium for growing anthuriums, Also included in this paper are results from experiments showing the effects of various levels of sunlight intensity, a factor equally as important as the growing medium. In order to develop a broad understanding of the nature of the anthurium plant, especially with respect to the cultural aspects, several other factors which might affect growth and flowering were also investigated and the results are presented herein

Effects of Growth Regulators on Fruit Set and Growth of the Acerola (Malpighia glabra L.)

The low natural fruit set of acerola in Hawaii, attributed to absence of pollen transferring agents, indicated the feasibility of growth regulator application to induce fruit set. Among the several growth regulators tried initially, 4-chlorophenoxyacetic acid (PCA) and indolebutyric acid ( IBA) were found to be effective in promoting fruit set, the f rmer being more efficient over a wider range of concentration. PCA exhibited some phytotoxic effects in the nature of leaf curling, yellowing, and even death of young vegetative tips. Phytotoxic effects were reduced in severity with decrease in concentration. lBA at 100 ppm effected approximately 60 percent fruit set without any apparent phytotoxic effects. Under field conditions the satisfactory fruit set and lack of phytotoxic effects with IBA at 100 ppm make this a highly desirable compound, but the wide use of it may be prohibited by its high cost. On the other hand, PCA at 50 ppm can induce as much fruit set as lBA at 100 ppm, and phytotoxic effects are mild with early recovery. Furthermore, the very low cost of this material makes its use economically feasible

Evaluation and Improvement of Anthurium Clones

The culture of anthuriums, Anthurium andraeanum, in Hawaii has gradually evolved from a hobby status to an important cut-flower industry. With the realization of the need for a systematic evaluation of available varieties and further improvement in flower color, size, shape, texture, and productivity, a breeding project on anthuriums was initiated in the spring of 1950 at the Hawaii Agricultural Experiment Station, University of Hawaii. Surveys of commercial establishments and private collections were immediately conducted to select and assemble the apparently outstanding commercial types as well as those possessing some characteristics of value in a breeding program. The selected plants were placed under surveillance for the purpose of evaluation, and, concurrently, a hybridization program was carried out with the major objective of producing improved commercial varieties. This paper summarizes the evaluation of the accessions and the results obtained to date in the breeding program

Características de frutos de genótipos de aceroleira cultivados sob elevada altitude Fruit characteristics of acerola genotypes grown at highaltitude

O objetivo deste trabalho foi avaliar as características físicas, físico-químicas e químicas de frutos de nove genótipos de acerola (Malpighia sp.) cultivados no Município de Anápolis, GO, localizado a 1.000 m de altitude. Os resultados mostraram que nessa região se consegue produção de frutos com elevados teores de vitamina C (acima de 1.000 mg/100 mL de suco). Há, entretanto, uma considerável variabilidade entre os genótipos estudados. Os genótiposde número2, 6, 3, 1 e 7 destacaram-se, atendendo àsprincipais exigências da indústria de suco.<br>The purpose of this work was to evaluate the physical, physical-chemical and chemical characteristics of fruits from nine genotypes of acerola (Malpighia sp.)growing in Anápolis, GO, Brazil, located at 1,000 m above sea level. Data showed that the production of fruits with high content of vitamin C (above 1,000 mg/100 mL of juice) is viable in that region. However, it was found a considerable variability among the genotypes studied, in which genotypesnumbered2, 6, 3, 1and 7 stood out, fulfilling the main industrial requirements