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Plant Growth Regulators Affect Germination and Main Carbon-Nitrogen Metabolites of Potato Tubers

Received: 6 November 2018     Accepted: 29 December 2018     Published: 30 January 2019
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Abstract

Assessing the effects of different growth regulators on sprout growth and tuber carbon-nitrogen metabolism during the storage of potato tubers is helpful to understand the physiological changes of dormancy in potatoes. In this study, a major potato cultivar ‘Chuanyu-117’ of Southwestern China was used as the experimental material. The tubers were immersed in sprouting inhibitors chlorpropham (CIPC), abscisic acid (ABA), and gibberellin A3 (GA3) to study sprout growth and changes in the carbon-nitrogen metabolism during tuber storage. The results showed that GA3 treatment shortened the dormancy intensity and amplitude by 17 days and 11 days, respectively, and that the sprouts grew faster after germination. Compared to the control treatment, ABA prolonged dormancy and increased its intensity by 6 days but shortened the amplitude by 11 days. After dormancy, the sprouts grew rapidly and uniformly. The CIPC treatment had a more significant dormancy prolonging effect. The stems germinated 70 days post treatment, and the germination period was extended by at least 40 days compared with the control. Tubers treated with different growth regulators showed similar carbon-nitrogen metabolism during the storage period. However, the rate of variation was significantly different. After 12 weeks, the starch content of tubers treated with GA3, ABA, and CIPC decreased by 13.36%, 11.30%, and 5.93%, respectively, while soluble sugar content decreased by 48.3%, 58.9%, and 56.1%, respectively. Soluble protein and crude protein content in the treated tubers first increased and then decreased. Soluble protein content in the tubers treated with GA3, ABA, and CIPC increased during storage but decreased in the later period. Crude protein content also increased the first time, and then decreased in the later period. Changes in the carbon-nitrogen ratio of tubers in different treatments during storage were also different. The carbon-nitrogen ratio of tubers treated with sprouting promotors was high, while that of the tubers treated with sprouting inhibitors was low and showed a gradual decreasing trend.

Published in American Journal of Agriculture and Forestry (Volume 7, Issue 1)
DOI 10.11648/j.ajaf.20190701.12
Page(s) 10-16
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Sprouting Inhibitor, Sprouting Promotor, Tuber, Germination, Carbon-Nitrogen Metabolism

References
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    Zhong Lei, Wang Liangjun, Yuan Jichao, Zheng Shunlin, Hu Jianjun. (2019). Plant Growth Regulators Affect Germination and Main Carbon-Nitrogen Metabolites of Potato Tubers. American Journal of Agriculture and Forestry, 7(1), 10-16. https://doi.org/10.11648/j.ajaf.20190701.12

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    ACS Style

    Zhong Lei; Wang Liangjun; Yuan Jichao; Zheng Shunlin; Hu Jianjun. Plant Growth Regulators Affect Germination and Main Carbon-Nitrogen Metabolites of Potato Tubers. Am. J. Agric. For. 2019, 7(1), 10-16. doi: 10.11648/j.ajaf.20190701.12

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    AMA Style

    Zhong Lei, Wang Liangjun, Yuan Jichao, Zheng Shunlin, Hu Jianjun. Plant Growth Regulators Affect Germination and Main Carbon-Nitrogen Metabolites of Potato Tubers. Am J Agric For. 2019;7(1):10-16. doi: 10.11648/j.ajaf.20190701.12

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  • @article{10.11648/j.ajaf.20190701.12,
      author = {Zhong Lei and Wang Liangjun and Yuan Jichao and Zheng Shunlin and Hu Jianjun},
      title = {Plant Growth Regulators Affect Germination and Main Carbon-Nitrogen Metabolites of Potato Tubers},
      journal = {American Journal of Agriculture and Forestry},
      volume = {7},
      number = {1},
      pages = {10-16},
      doi = {10.11648/j.ajaf.20190701.12},
      url = {https://doi.org/10.11648/j.ajaf.20190701.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajaf.20190701.12},
      abstract = {Assessing the effects of different growth regulators on sprout growth and tuber carbon-nitrogen metabolism during the storage of potato tubers is helpful to understand the physiological changes of dormancy in potatoes. In this study, a major potato cultivar ‘Chuanyu-117’ of Southwestern China was used as the experimental material. The tubers were immersed in sprouting inhibitors chlorpropham (CIPC), abscisic acid (ABA), and gibberellin A3 (GA3) to study sprout growth and changes in the carbon-nitrogen metabolism during tuber storage. The results showed that GA3 treatment shortened the dormancy intensity and amplitude by 17 days and 11 days, respectively, and that the sprouts grew faster after germination. Compared to the control treatment, ABA prolonged dormancy and increased its intensity by 6 days but shortened the amplitude by 11 days. After dormancy, the sprouts grew rapidly and uniformly. The CIPC treatment had a more significant dormancy prolonging effect. The stems germinated 70 days post treatment, and the germination period was extended by at least 40 days compared with the control. Tubers treated with different growth regulators showed similar carbon-nitrogen metabolism during the storage period. However, the rate of variation was significantly different. After 12 weeks, the starch content of tubers treated with GA3, ABA, and CIPC decreased by 13.36%, 11.30%, and 5.93%, respectively, while soluble sugar content decreased by 48.3%, 58.9%, and 56.1%, respectively. Soluble protein and crude protein content in the treated tubers first increased and then decreased. Soluble protein content in the tubers treated with GA3, ABA, and CIPC increased during storage but decreased in the later period. Crude protein content also increased the first time, and then decreased in the later period. Changes in the carbon-nitrogen ratio of tubers in different treatments during storage were also different. The carbon-nitrogen ratio of tubers treated with sprouting promotors was high, while that of the tubers treated with sprouting inhibitors was low and showed a gradual decreasing trend.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - Plant Growth Regulators Affect Germination and Main Carbon-Nitrogen Metabolites of Potato Tubers
    AU  - Zhong Lei
    AU  - Wang Liangjun
    AU  - Yuan Jichao
    AU  - Zheng Shunlin
    AU  - Hu Jianjun
    Y1  - 2019/01/30
    PY  - 2019
    N1  - https://doi.org/10.11648/j.ajaf.20190701.12
    DO  - 10.11648/j.ajaf.20190701.12
    T2  - American Journal of Agriculture and Forestry
    JF  - American Journal of Agriculture and Forestry
    JO  - American Journal of Agriculture and Forestry
    SP  - 10
    EP  - 16
    PB  - Science Publishing Group
    SN  - 2330-8591
    UR  - https://doi.org/10.11648/j.ajaf.20190701.12
    AB  - Assessing the effects of different growth regulators on sprout growth and tuber carbon-nitrogen metabolism during the storage of potato tubers is helpful to understand the physiological changes of dormancy in potatoes. In this study, a major potato cultivar ‘Chuanyu-117’ of Southwestern China was used as the experimental material. The tubers were immersed in sprouting inhibitors chlorpropham (CIPC), abscisic acid (ABA), and gibberellin A3 (GA3) to study sprout growth and changes in the carbon-nitrogen metabolism during tuber storage. The results showed that GA3 treatment shortened the dormancy intensity and amplitude by 17 days and 11 days, respectively, and that the sprouts grew faster after germination. Compared to the control treatment, ABA prolonged dormancy and increased its intensity by 6 days but shortened the amplitude by 11 days. After dormancy, the sprouts grew rapidly and uniformly. The CIPC treatment had a more significant dormancy prolonging effect. The stems germinated 70 days post treatment, and the germination period was extended by at least 40 days compared with the control. Tubers treated with different growth regulators showed similar carbon-nitrogen metabolism during the storage period. However, the rate of variation was significantly different. After 12 weeks, the starch content of tubers treated with GA3, ABA, and CIPC decreased by 13.36%, 11.30%, and 5.93%, respectively, while soluble sugar content decreased by 48.3%, 58.9%, and 56.1%, respectively. Soluble protein and crude protein content in the treated tubers first increased and then decreased. Soluble protein content in the tubers treated with GA3, ABA, and CIPC increased during storage but decreased in the later period. Crude protein content also increased the first time, and then decreased in the later period. Changes in the carbon-nitrogen ratio of tubers in different treatments during storage were also different. The carbon-nitrogen ratio of tubers treated with sprouting promotors was high, while that of the tubers treated with sprouting inhibitors was low and showed a gradual decreasing trend.
    VL  - 7
    IS  - 1
    ER  - 

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Author Information
  • Key Laboratory of Crop Ecophysiology and Farming System in Southwest of China, Ministry of Agriculture/College of Agronomy, Sichuan Agricultural University, Chengdu, China

  • Agricultural Extension Station of Dongpo District of Meishan City in Sichuan, Meishan, China

  • Key Laboratory of Crop Ecophysiology and Farming System in Southwest of China, Ministry of Agriculture/College of Agronomy, Sichuan Agricultural University, Chengdu, China

  • Key Laboratory of Crop Ecophysiology and Farming System in Southwest of China, Ministry of Agriculture/College of Agronomy, Sichuan Agricultural University, Chengdu, China

  • Crop Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China

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