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3. Nitrogen Requirements for Vegetative Growth, Flowering, Seed Production, and Ramet Growth of Paphiopedilum armeniacum (Orchid)

Author

Hu Hong, Mou Zong-min, Yan Ning, and Li ShuYun

Subjects
biology, Vegetative reproduction, ved/biology, media_common.quotation_subject, ved/biology.organism_classification_rank.species, Horticulture, biology.organism_classification, Shrub, Transplantation, Nutrient, Agronomy, Germination, Ornamental plant, Paphiopedilum armeniacum, Reproduction, media_common
Abstract

Paphiopedilum armeniacum S. C. Chen et F. Y. Liu is endemic to China and has great ornamental value. Little is known about its nutrient requirement for growth and reproduction after deflasking (transplantation of seedlings from culture vessels to pots). We studied the effects of adding nitrogen (N) (0, 105, 210, and 420 mg·L−1) on the vegetative growth and reproduction of P. armeniacum. N enrichment improved leaf area and lengthened the leaf lifespan during the vegetative stage. The effects of N application on flower size were minor. The intermediate N level of 210 mg·L−1 (MN) increased the seed capsule weight, seed germination rate, and improved the growth of seedlings that developed from seeds of MN-treated plants. N fertilizer exerted little influence on ramet emergence and ramet number per plant, but a low N concentration of 105 mg·L−1 promoted the leaf number and leaf area of ramets. Appropriate N levels for P. armeniacum in production and cultivation should be determined according to different production objectives.

Published
2012

4. Nitrogen Requirements for Vegetative Growth, Flowering, Seed Production, and Ramet Growth of Paphiopedilum armeniacum (Orchid).

Author

Mou Zong-min, Yan Ning, Li Shu-yun, and Hu Hong

Subjects
*PAPHIOPEDILUM, *ORNAMENTAL plants, *PLANT nutrients, *FERTILIZERS
Abstract

Paphiopedilum armeniacum S. C. Chen et F. Y. Liu is endemic to China and has great ornamental value. Little is known about its nutrient requirement for growth and reproduction after deflasking (transplantation of seedlings from culture vessels to pots). We studied the effects of adding nitrogen (N) (0,105,210, and 420 mg-L-1) on the vegetative growth and reproduction of P. armeniacum. N enrichment improved leaf area and lengthened the leaf lifespan during the vegetative stage. The effects of N application on flower size were minor. The intermediate N level of 210 mg-L-1 (MN) increased the seed capsule weight, seed germination rate, and improved the growth of seedlings that developed from seeds of MN-treated plants. N fertilizer exerted little influence on ramet emergence and ramet number per plant, but a low N concentration of 105 mg-L-1 promoted the leaf number and leaf area of ramets. Appropriate N levels for P. armeniacum in production and cultivation should be determined according to different production objectives. [ABSTRACT FROM AUTHOR]

Published
2012
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