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Morphological characterization of Dendrobium orchid species ofEast Siang district of Arunachal Pradesh
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Fifteen species of Dendrobium orchids collected from different regions of East Siang district of Arunachal Pradesh, India were evaluated for 12 vegetative and flowering characters. Significant differences were observed amongst the Dendrobium species for all the traits. The species Dendrobium aphyllum recorded maximum plant height (93.87 cm), number of internode (31) and leaves/plant (13.67), inflorescence/plant (25.67), flower longevity on plant (20.67 days), whereas, flower longevity was recorded minimum (4.33 days) in Dendrobium jenkinsii. Maximum internode diameter (1.36 cm) was recorded in Dendrobium chrysotoxum; maximum leaf width (6.33 cm), inflorescence length (17.70 cm) was recorded in Dendrobium densiflorum. Maximum leaf length (16 cm), flowers/inflorescence (32.67) was recorded in Dendrobium thyrsiflorum, however, Dendrobium devonianum recorded highest flower length (6.03 cm). On the basis of overall performance, species Dendrobium aphyllum, Dendrobium densiflorum, Dendrobium thyrsiflorum were found promising for hanging baskets and Dendrobium nobile var. alba and D. nobile for cut flower purpose. Based on hierarchical clusters of the morphological traits, the Dendrobium orchid genotypes were grouped into two which is confined to principal component analysis.
Society for Promotion of Horticulture
Title: Morphological characterization of Dendrobium orchid species ofEast Siang district of Arunachal Pradesh
Description:
Fifteen species of Dendrobium orchids collected from different regions of East Siang district of Arunachal Pradesh, India were evaluated for 12 vegetative and flowering characters.
Significant differences were observed amongst the Dendrobium species for all the traits.
The species Dendrobium aphyllum recorded maximum plant height (93.
87 cm), number of internode (31) and leaves/plant (13.
67), inflorescence/plant (25.
67), flower longevity on plant (20.
67 days), whereas, flower longevity was recorded minimum (4.
33 days) in Dendrobium jenkinsii.
Maximum internode diameter (1.
36 cm) was recorded in Dendrobium chrysotoxum; maximum leaf width (6.
33 cm), inflorescence length (17.
70 cm) was recorded in Dendrobium densiflorum.
Maximum leaf length (16 cm), flowers/inflorescence (32.
67) was recorded in Dendrobium thyrsiflorum, however, Dendrobium devonianum recorded highest flower length (6.
03 cm).
On the basis of overall performance, species Dendrobium aphyllum, Dendrobium densiflorum, Dendrobium thyrsiflorum were found promising for hanging baskets and Dendrobium nobile var.
alba and D.
nobile for cut flower purpose.
Based on hierarchical clusters of the morphological traits, the Dendrobium orchid genotypes were grouped into two which is confined to principal component analysis.
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