Noninvasive Determination on Maturity of <i>Dendrobium nobile</i> Pseudobulbs based on SPAD Measurements

WEN Birou; CAI Xueyan; YANG Yi; PENG Jieliang; CHEN Fangyao; WEN Zhenzhen; LIU Wei

doi:10.19303/j.issn.1008-0384.2022.06.013

Volume 37 Issue 6

Jun. 2022

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Article Navigation > Fujian Journal of Agricultural Sciences > 2022 > 37(6): 781-788

WEN B R, CAI X Y, YANG Y, et al. Noninvasive Determination on Maturity of Dendrobium nobile Pseudobulbs based on SPAD Measurements [J]. Fujian Journal of Agricultural Sciences，2022，37（6）：781−788 doi: 10.19303/j.issn.1008-0384.2022.06.013

Citation:

WEN B R, CAI X Y, YANG Y, et al. Noninvasive Determination on Maturity of Dendrobium nobile Pseudobulbs based on SPAD Measurements [J]. Fujian Journal of Agricultural Sciences，2022，37（6）：781−788 doi: 10.19303/j.issn.1008-0384.2022.06.013

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Noninvasive Determination on Maturity of Dendrobium nobile Pseudobulbs based on SPAD Measurements

doi: 10.19303/j.issn.1008-0384.2022.06.013

1.
College of Life Sciences, South China Agricultural University, Guangzhou, Guangdong　510642, China
2.
School of Public Health, Xi'an Jiaotong University, Xi'an, Shaanxi　710049, China
3.
Guangdong Engineering Vocational and Technical College, Guangzhou, Guangdong　510000, China

Received Date: 2021-12-02
Rev Recd Date: 2022-04-26
Publish Date: 2022-06-28

Abstract

Abstract

Objective A mathematic model for accurate and noninvasive but oftentimes difficult determination on the maturation stages of orchid pseudobulbs was established for effective and timely vernalization of Dendrobium nobile. Methods Chlorophyll SPAD measurements of 5 leaves from the stop leaf to the lower ones on a pseudobulb of varieties of D. nobile including Hot Lobster, Sakura Hime, and Lucky Girls Sweetheart orchids at different stages of maturity were obtained. A correlation between the measurements and pseudobulb maturity was established. Flowering of Lovely Hippo and Sakura Hime pseudobulbs after low temperature vernalization was monitored for model verification. Results The k value (difference index) on the functional relationship between SPAD data and pseudobulb maturity indicated a viable predictability of the established model. Conclusion The newly established method for determining the maturation stages of D. nobile pseudobulbs based on SPAD measurements of differently positioned leaves was noninvasive, rapid, and accurate. The application would significantly facilitate the operation of the orchid cultivation.
- Dendrobium nobile,
- vernalizing efficiency,
- SPAD measurement,
- vernalization,
- stop leaf

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References(21)

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