Effect of harvesting at different nodes on growth and flower yield of carnation (Dianthus caryophyllus Linn) in second season crop

Abstract

The present study was under taken in a commercial floriculture farm under protected cultivation with three cultivars of carnation during July 2010 to February 2011. The experiment was laid out in Randomized Block Design with factorial concept. Harvesting of carnation flower stalk at 3 rd node from the ground level recorded minimum number of days to sprouting of buds than other harvesting nodes i.e., 2 nd , 4 th and 5 th nodes. Days to first flower bud appearance, colour break stage and days to harvest was also minimum with harvesting at 3 rd node in cultivars Domingo, Dover and Keiro. And the length of lateral, length of flower stalk and flower, diameter of flower stalk and flower, number of flower stalks per plant, fresh flower weight and vase life was maximum with harvesting at 3 rd node than other harvesting heights in cultivar Domingo.

Effect of Benzyl Adenine, Calcium Chloride and Chitosan on Growth and Flower Production of Gerbera Jamesonii Bolus ex. Hook. Cv. Esmara

“…Spraying plants with benzyl adenine resulted in an increase in leaf area at the end of the experiment (Table 2), which may be attributed to the role of the added cytokinin in increasing the size of the cells in plant leaves and thus their expansion [16]. The results in Table (3) showed a significant increase in the number of branches when the plants were treated with benzyl adenine in contrast to the control treatment, and this result agrees with what was mentioned by [17] on the Gerbera plant G. jamesonii and Kasturi and Sekhar [18] in their study on the Dianthus caryophyllus, this result can be explained according to the role played by cytokinins in breaking the apical dominance and increasing the growth of lateral buds, as well as the increase in the number of leaves, leaves area and total chlorophyll content in leaves (Tables 1, 2 and 4), which allows an increase in the accumulation of photosynthetic products that have a positive effect in increasing the number of branches. The results in Table (4) indicate that spraying the plants with benzyl adenine led to a significant increase in the total chlorophyll content in the leaves at the end of the experiment.…”