Orchid research papers

Their stylish, elegant appearance and extended longevity have boosted popularity among growers and consumers. Using unsuitable explants such as callus cultures as target materials for transformation may cause chimeric transgenic plants and often confuse the analysis because of difficulty in maintaining single-cell embryogenesis or a high incidence of somaclonal variation Ishii et al.

Gower Ramsey, which plays a key role in water, carbohydrate and other nutrition support during floral development, and 1, subtractive ESTs were obtained. The Chair's Award was not given, because none of the thematially suitable proposals were rated as good or better.

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PoalesT. A total of 7, bp sequences amplified from eight regions of the genome were used to identify the relationships at the species level between the 15 Oncidiinae hybrids, which were supported by high bootstrap values Wu et al.

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Several previous studies of regulation of flowering in orchids are mainly of the effects of low temperature or daylength. Beauvois Poales , Triticum aestivum L. Funding is provided from a variety of sources: Income from restricted endowment. These symbiotic R. Further investigation of genome organization and relationships of Phalaenopsis species by genomic in situ hybridization GISH revealed that species with large genomes had much more repetitive sequences, in both type and amount Lin et al. Of note, their transcripts are accumulated during vernalization and this process is likely to be FLC-independent. Cytokinins e. To study gene expression in Phalaenopsis reproductive organs, a cDNA library was constructed from mature flower buds of P. For many orchids, 4—7 years are required to finish the juvenile stage and flower from seed Goh and Arditti

Three major methods for gene transformation include Agrobacterium tumefaciens-mediated transformation, microprojectile bombardment and direct gene transformation. Recently, several A. We could fund four proposals; see bottom of Grant Funding History page.

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Restricted donations for special awards. Dormant buds of Phalaenopsis contain a relatively high level of free ABA, whereas no detectable free or bound ABA was found in flowering shoots Wang et al. However, certain commercial hybrids can flower within 36 months from seeding Hew and Yong This information will provide a broad scope for study of orchid biology and serve as a starting point for uncovering the mysteries of orchid evolution. The ploidy levels during orchid flower development were analyzed by combining a logistic growth model with an endoreduplication model of Schweizer Lee et al. In , You and co-workers successfully developed a novel selection marker, the sweet pepper Capsicum annuum L. Unlike Phalaenopsis, the regulation of Oncidium flowering is more via the autonomous pathway, and it is tightly linked to the nutrition status of the pseudobulb. Poales , T. Using unsuitable explants such as callus cultures as target materials for transformation may cause chimeric transgenic plants and often confuse the analysis because of difficulty in maintaining single-cell embryogenesis or a high incidence of somaclonal variation Ishii et al. The Chair's Award was not given, because none of the thematially suitable proposals were rated as good or better. Once the shoot meristem becomes committed to the new development program for bolting, it is considered the reproductive stage Shen et al. The pseudobulb serves for water, mineral and carbohydrate storage that supports both vegetative growth and reproduction Herold and Lewis , Zimmerman , Stern and Morris The results also indicated that cells with a higher ploidy level have lower transition rates and less potential for further endoreduplication, and endoreduplication stops when the flower fresh weight stops increasing Lee et al. This program is currently on hiatus due to funding constraints.

Li and co-workers developed a highly efficient protocol for efficiently producing transgenic plants of O. AsteralesDianthus caryophyllus L. In addition to ambient temperature, plant growth regulators PGRs also play important roles in inflorescence induction.

Orchid research papers
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Orchid Research