Related Papers
Journal of Home & Consumer Horticulture
Plants and Human Culture
1994 •
Candice Shoemaker
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FACTORS INFLUENCING PREHARVEST FRUIT SPLITTING IN ELLENDALE (C. reticulata)
1990 •
Piet van rensburg
Horticulture, Environment, and Biotechnology
Growth and flowering physiology, and developing new technologies to increase the flower numbers in the Genus Lilium
2013 •
xue wei Wu
HortScience
Growth and yield of early, mid and late season cultivars of broccoli and cauliflower
1990 •
Nanik Setyowati
Different Day and Night Temperature Responses in Lilium hansonii in Relation to Growth and Flower Development
Juniel Lucidos
Abstract. Temperature is one of the most important factors that directly affect the possibility and the rate of flower differentiation in many geophytes such as Lilium. In this experiment, different day and night temperatures were used to determine the required day and night temperature for flower bud development in Lilium hansonii. After low temperature exposure for breaking bulb dormancy, the bulbs were planted in pots, and placed in designated growth chambers each with a specific temperature. The plants were exposed to different temperatures for 30 days, and 15 days after planting sample plants were collected in each treatment for observation of flower bud development using the scanning electron microscope (SEM). Responses of plant height, number of leaves, and stem diameter were also measured as affected by difference between day and night temperature (DIF) and average daily temperature (ADT). The results showed that average daily temperature and high day temperature had a direct effect on the quality, quantity, and time required for flower bud development. They also affected the stem elongation, number of leaves, and stem diameter. Higher ADT and DT (25°C) promoted stem elongation and increased leaf unfolding rate (LUR), but with less number of leaves produced. As ADT and DT increased, stem diameter decreases. In lower ADT and DT (15°C) treatment, greater stem diameter and higher number of flower buds (2-7 buds) were produced. Higher ADT and DT promoted early flower bud initiation, but lower number of flower buds with higher possibilities of flower bud abortion, while lower ADT and DT showed slower flower bud initiation and development with higher flower bud formation. Additional key words: DIF, flower abortion, flowering physiology, scanning electron microscope (SEM)
HortScience
Effect of Timing of Ga Application on Flowering of Macadamia
1990 •
Mike Nagao
HortScience
Callus Formation in Bud Unions of `Jonagold' on `Mark' Rootstock
Michele Warmund
Computers and Electronics in Agriculture
Variability in flower development of Easter lily (Lilium longiflorum Thunb.): model and decision-support system
2000 •
J.heinrich Lieth
DETERMINATION OF FLOWER BUD INITIATION IN ORIENTAL HYBRID LILIES ‘SIBERIA’ AND ‘SORBONNE’
Juniel Lucidos
The flower initiation stage is one of the most critical stages in plant development. This study was conducted with an aim of identifying the precise flower bud initiation stage in oriental lily hybrids, ‘Sorbonne’ and ‘Siberia’, for the purpose of proper plant management during the flower development stage. The bulbs were micro-dissected 0, 10, 20, 30, and 40 days after planting. Five bulbs were randomly selected for dissection and flower bud initiation stage identification. Bulb circumference, shoot length, number of bulb scales, number of leafy scales, number of true/alternate leaves, and flower bud initiation stage were measured. The flower bud initiation stages were scaled as follows: 0 = no flower buds, 1 = starting stage, 2 = flower bud developing stage, and 3 = fully developed flower bud stage. In both the hybrids, flower bud initiation started 20 days after planting and was observed to be associated with shoot length; the initiation occurring in shoots 11–13cm long. It was also greatly affected by the cultural management during the growing of plants. Identification of the exact time of flower bud initiation will be useful in proper management of the plant materials with respect to their requirements of water, nutrient, environmental conditions, and pest control. This knowledge will help in developing quality flowers of the two studied oriental lily hybrids for breeding and commercial purposes.
Journal of Applied Horticulture
Morphological changes in the apex of Prunus persica L. during floral transition and effects of gibberellin on flower bud differentiation
Journal of Applied Horticulture
The aim of the research was to study the morphological and histochemical evolution of the bud meristems of 'Lavinia' nectarine cultivar. Moreover, the effectiveness of Release LC (a gibberellin chemical compound) in controlling the rate of fl ower bud differentiation was also evaluated. During a two-year period, the Release LC was applied in postharvest to avoid problems of possible chemical residues on marketable fruits. To determine the effect of treatment, several biological parameters such as initial fl ower and vegetative bud number, fl ower bud drop, evolution of the fl ower bud phenological stages, rate of bloom and fruit set were recorded. To establish the fl oral differentiation stage, the meristematic apices were collected before and after treatment and microscopically observed. The thin sections were analysed using histological (apex size, developmental stages of meristematic apex, co-axial stage), and histochemical (RNA fl uorescent staining) techniques. In 'Lavinia' cv., the critical phase of the meristematic apex evolution occurred from May to June (60 and 90 days after full bloom): the presence of triple apices increased rapidly, the co-axial phase was achieved, the width and height of the meristematic dome increased markedly and the RNA appeared by a weak staining. As regards the fl ower bud differentiation control by exogenous treatments with Release LC, the different results obtained in our experiments indicate that the effi cacy of treatment strictly depends on the growth stage of a meristematic apex.
