Morphological and Physiological Changes during Flower Bud Differentiation of <i>Cymbidium</i> Gold Elf 'Sun-dust'

LIN Rong-yan; CHEN Yi-quan; LIN Bing; WU Jian-she; ZHONG Huai-qin

doi:10.19303/j.issn.1008-0384.2019.02.005

Volume 34 Issue 2

Apr. 2019

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Article Navigation > Fujian Journal of Agricultural Sciences > 2019 > 34(2): 170-175

LIN Rong-yan, CHEN Yi-quan, LIN Bing, WU Jian-she, ZHONG Huai-qin. Morphological and Physiological Changes during Flower Bud Differentiation of Cymbidium Gold Elf 'Sun-dust'[J]. Fujian Journal of Agricultural Sciences, 2019, 34(2): 170-175. doi: 10.19303/j.issn.1008-0384.2019.02.005

Citation:

LIN Rong-yan, CHEN Yi-quan, LIN Bing, WU Jian-she, ZHONG Huai-qin. Morphological and Physiological Changes during Flower Bud Differentiation of Cymbidium Gold Elf 'Sun-dust'[J]. Fujian Journal of Agricultural Sciences, 2019, 34(2): 170-175. doi: 10.19303/j.issn.1008-0384.2019.02.005

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Morphological and Physiological Changes during Flower Bud Differentiation of Cymbidium Gold Elf 'Sun-dust'

doi: 10.19303/j.issn.1008-0384.2019.02.005

LIN Rong-yan^{1, 2, 3
,},
CHEN Yi-quan⁴,
LIN Bing^{1, 2, 3},
WU Jian-she^{1, 2, 3},
ZHONG Huai-qin^{1, 2, 3
,
,}

1.
Institute of Crop Sciences, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350013, China
2.
Flower Research Center, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350013, China
3.
Fujian Engineering Research Center for Characteristic Floriculture, Fuzhou, Fujian 350013, China
4.
Agricultural Engineering and Technology Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350003, China

Received Date: 2018-05-12
Rev Recd Date: 2018-11-14
Publish Date: 2019-02-28

Abstract

Abstract

Objective Morphological and physiological changes during flower bud differentiation of a Cymbidium hybrid were studied to decipher the floral formation mechanism. Method The process of flower bud differentiation of Golden Elf 'Sun-dust' was observed by means of paraffin section. The physiological indices, such as soluble sugars, starch and soluble protein, were measured at different stages of the differentiation. Result The differentiation process could be divided into 6 phases as undifferentiated and differentiations of inflorescence primordium, floret primordium, sepal primordium, petal primordium, and column and pollinia. During the process, the contents of soluble sugars and starch in the leaves fluctuated up and down; the soluble protein increased initially followed by a decline; and, the activities of POD and CAT decreased in the beginning and then increased. Conclusion The accumulations of soluble sugars, starch and soluble protein in the leaves prior to flower bud differentiation and the effective utilization at latter stages were found to significantly affect the differentiation process as well as the subsequent flower formation of Cymbidium hybrid.
- Cymbidium hybrid,
- flower bud differentiation,
- physiological and biochemical changes

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References(36)

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