Aesthetic attributes and easy-to-grow nature of tropical cut flowers (TCFs) have contributedto th... more Aesthetic attributes and easy-to-grow nature of tropical cut flowers (TCFs) have contributedto their potential for increased production. The dearth of information regarding agronomic practices and lack of planting materials are the key hindrances against their fast expansion. Unconventional high-temperature storage requirements and the anatomy of the peduncle contribute topoor vase life performance, while troublesome packaging and transport due to unusual size and structureprimarily cause post-harvest quality deterioration. Nonetheless, the exotic floral structuresconsequently increase market demand, particularly in temperate countries. This boosts studies aimed at overcoming post-harvest hindrances. While a few TCFs (Anthurium, Strelitzia, Alpinia, and a few orchids) are under the spotlight, many others remain behind the veil. Heliconia, an emerging specialty TCF (False Bird-of-Paradise, family Heliconiaceae), is one of them. The structural uniquenessand dazzling hues of Heliconia ...
... however, refer to the possibilities of using aged nodal segments as explants for in vitro mul... more ... however, refer to the possibilities of using aged nodal segments as explants for in vitro multiplication of elite genotypes with good results (Lakshmi Sita and Rani 1985; Sankara Rao and Venkateswara 1985; Das ... bicostata (Dayal and Ayar 1986), E pulverulenta (Brophy et al. ...
ABSTRACT Tree peonies are flowering shrubs which grow from 1 to 6 feet tall and are divided into ... more ABSTRACT Tree peonies are flowering shrubs which grow from 1 to 6 feet tall and are divided into two main groups: the hybrid and the non hybrid group. The latter ones are varieties of P. suffruticosa, comprising more than 500 cultivars. P. suffruticosa cultivars are used as outside ornamentals and as pot plants. Their cultivation under warmer climates, where the flowering process is accelerated, provides an excellent early market niche as cut flowers. The reproduction, under a commercial point of view, is mainly done by two primary methods of vegetative propagation: tuft division and grafting. In division methods, a large plant is simply divided into small plants, each bearing its own roots. In grafting methods, an herbaceous rootstock is used to nourish a tree peony scion until the tree peony produces its own sustaining roots. The choice of the propagation method is related to the degree of branching of plants which can present a different number of divisible bushes. Taking into consideration that these conventional propagation methods lead to a high cost of the plants due to technical and time-consuming difficulties (Aoki & Inoue, 1992), the peony culture could benefit greatly from micropropagation. A reliable micropropagation system might overcome these difficulties and it could also be used for the multiplication of virus-free stock material or new cultivars.
ABSTRACT The objective of this research was to carry out comparative agronomical trials of eleven... more ABSTRACT The objective of this research was to carry out comparative agronomical trials of eleven genotypes of Ranunculus asiaticus L. and to evaluate the effect on their physiological traits and agronomic features of storage conditions before planting. The effect of temperature and oxygen concentration during storage of the tuberous roots was evaluated. The cold pre-treatment accelerated flower initiation and develoopment in all genotypes. Storage of tuberous roots for one year at 2 °C kept their sprouting ability at satisfactory level (around 90%). Qualitative and quantitative differences have been observed in different genotypes at the level of root carbohydrate pool and cell structure. Atmosphere composition had no significant effects on the stored propagation units.
Aesthetic attributes and easy-to-grow nature of tropical cut flowers (TCFs) have contributedto th... more Aesthetic attributes and easy-to-grow nature of tropical cut flowers (TCFs) have contributedto their potential for increased production. The dearth of information regarding agronomic practices and lack of planting materials are the key hindrances against their fast expansion. Unconventional high-temperature storage requirements and the anatomy of the peduncle contribute topoor vase life performance, while troublesome packaging and transport due to unusual size and structureprimarily cause post-harvest quality deterioration. Nonetheless, the exotic floral structuresconsequently increase market demand, particularly in temperate countries. This boosts studies aimed at overcoming post-harvest hindrances. While a few TCFs (Anthurium, Strelitzia, Alpinia, and a few orchids) are under the spotlight, many others remain behind the veil. Heliconia, an emerging specialty TCF (False Bird-of-Paradise, family Heliconiaceae), is one of them. The structural uniquenessand dazzling hues of Heliconia ...
... however, refer to the possibilities of using aged nodal segments as explants for in vitro mul... more ... however, refer to the possibilities of using aged nodal segments as explants for in vitro multiplication of elite genotypes with good results (Lakshmi Sita and Rani 1985; Sankara Rao and Venkateswara 1985; Das ... bicostata (Dayal and Ayar 1986), E pulverulenta (Brophy et al. ...
ABSTRACT Tree peonies are flowering shrubs which grow from 1 to 6 feet tall and are divided into ... more ABSTRACT Tree peonies are flowering shrubs which grow from 1 to 6 feet tall and are divided into two main groups: the hybrid and the non hybrid group. The latter ones are varieties of P. suffruticosa, comprising more than 500 cultivars. P. suffruticosa cultivars are used as outside ornamentals and as pot plants. Their cultivation under warmer climates, where the flowering process is accelerated, provides an excellent early market niche as cut flowers. The reproduction, under a commercial point of view, is mainly done by two primary methods of vegetative propagation: tuft division and grafting. In division methods, a large plant is simply divided into small plants, each bearing its own roots. In grafting methods, an herbaceous rootstock is used to nourish a tree peony scion until the tree peony produces its own sustaining roots. The choice of the propagation method is related to the degree of branching of plants which can present a different number of divisible bushes. Taking into consideration that these conventional propagation methods lead to a high cost of the plants due to technical and time-consuming difficulties (Aoki & Inoue, 1992), the peony culture could benefit greatly from micropropagation. A reliable micropropagation system might overcome these difficulties and it could also be used for the multiplication of virus-free stock material or new cultivars.
ABSTRACT The objective of this research was to carry out comparative agronomical trials of eleven... more ABSTRACT The objective of this research was to carry out comparative agronomical trials of eleven genotypes of Ranunculus asiaticus L. and to evaluate the effect on their physiological traits and agronomic features of storage conditions before planting. The effect of temperature and oxygen concentration during storage of the tuberous roots was evaluated. The cold pre-treatment accelerated flower initiation and develoopment in all genotypes. Storage of tuberous roots for one year at 2 °C kept their sprouting ability at satisfactory level (around 90%). Qualitative and quantitative differences have been observed in different genotypes at the level of root carbohydrate pool and cell structure. Atmosphere composition had no significant effects on the stored propagation units.
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