Articles
PRODUCTION OF QUALITY WOODY AND FLORAL CROPS USING INNOVATIVE PRODUCTION TECHNIQUES
Article number
766_2
Pages
29 – 44
Language
English
Abstract
For woody plants, accelerating seed germination by breaking seed dormancy and controlling flowering to bypass the juvenile period is a key to producing a quality plant in the shortest possible time.
Germination of mature seeds of Styrax japonicus, as investigated by magnetic resonance imaging, was accelerated and germination percentage was increased with 1 to 2 months of warm stratification followed by 2 to 3 months of cold stratification.
However, it required 4 to 5 years to produce quality plants when plants were started from seeds.
High quality Styrax plants were produced in 2 years with vegetative propagation.
However, over-wintering loss of rooted cuttings was a problem and should be minimized.
With Ardisia crenata, flowering plants required 4 to 5 years when started from seeds but less than 2 years were necessary when propagated from rooted cuttings.
Traditionally, bulbous crops are forced from large bulbs grown in the field one to two years.
Dormancy must be broken to induce flowering with bulb cold/shoot photoperiod treatments in Lilium and high – warm – low temperature treatments in Ornithogalum. It would be desirable if the bulb production phase could be bypassed to shorten the total production time.
Quality plants of L. longiflorum, L. × elegans, and interspecific hybrids of these two, LA hybrids, were produced from seeds, stem bulbils, or tissue cultured plants, respectively, in a year.
Temperature manipulation at the time of floral induction was a key for successful forcing of Lilium. For Ornithogalum thyrsoides, selection of genotypes and combination of optimum concentrations of auxin and cytokinin for in vitro propagation using leaf explants was important to produce quality cut flowers and potted plants in less than a year.
Germination of mature seeds of Styrax japonicus, as investigated by magnetic resonance imaging, was accelerated and germination percentage was increased with 1 to 2 months of warm stratification followed by 2 to 3 months of cold stratification.
However, it required 4 to 5 years to produce quality plants when plants were started from seeds.
High quality Styrax plants were produced in 2 years with vegetative propagation.
However, over-wintering loss of rooted cuttings was a problem and should be minimized.
With Ardisia crenata, flowering plants required 4 to 5 years when started from seeds but less than 2 years were necessary when propagated from rooted cuttings.
Traditionally, bulbous crops are forced from large bulbs grown in the field one to two years.
Dormancy must be broken to induce flowering with bulb cold/shoot photoperiod treatments in Lilium and high – warm – low temperature treatments in Ornithogalum. It would be desirable if the bulb production phase could be bypassed to shorten the total production time.
Quality plants of L. longiflorum, L. × elegans, and interspecific hybrids of these two, LA hybrids, were produced from seeds, stem bulbils, or tissue cultured plants, respectively, in a year.
Temperature manipulation at the time of floral induction was a key for successful forcing of Lilium. For Ornithogalum thyrsoides, selection of genotypes and combination of optimum concentrations of auxin and cytokinin for in vitro propagation using leaf explants was important to produce quality cut flowers and potted plants in less than a year.
Publication
Authors
M.S. Roh, Young Hee Joung, Jung Keun Suh , Ae-Kyung Lee
Keywords
fast cropping, new production techniques, landscape plants, geophytes
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