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Morphological, physiological and biochemical changes in Magnolia zenii Cheng seed during development

An understanding of the seed dynamics of endangered plant species, such as Magnolia zenii Cheng, is important for successful conservation. This study examined the morphological, physiological and biochemical changes that occur in M. zenii Cheng during seed development to determine the appropriate ha...

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Detalles Bibliográficos
Autores principales: Wang, Shan, Shen, Yongbao, Bao, Huapeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Blackwell Publishing Ltd 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8362153/
https://www.ncbi.nlm.nih.gov/pubmed/33937990
http://dx.doi.org/10.1111/ppl.13445
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author Wang, Shan
Shen, Yongbao
Bao, Huapeng
author_facet Wang, Shan
Shen, Yongbao
Bao, Huapeng
author_sort Wang, Shan
collection PubMed
description An understanding of the seed dynamics of endangered plant species, such as Magnolia zenii Cheng, is important for successful conservation. This study examined the morphological, physiological and biochemical changes that occur in M. zenii Cheng during seed development to determine the appropriate harvest stage. The appearance of the seeds was influenced by the physiological and biochemical changes occurring during the developmental period, during which the colour of the fruits changed from green to red, while that of the seed changed from light brown to dark brown. There was a significant decrease in the seed moisture content from 90 to 120 days after flowering (DAF); however, there was no significant change from 135 to 165 DAF. The seeds from 135 DAF onwards showed developed cotyledonary embryos. The seed viability exceeded 95% from 135 DAF onwards; however, the germination percentage was 0, hypothesising that the seeds of M. zenii Cheng might exhibit physiological dormancy under certain conditions of this experiment. There was a significant increase in the fat, soluble sugar and soluble starch content of the seeds while approaching maturity. There were significant changes in malate dehydrogenase (MDH), glucose‐6‐phosphate dehydrogenase (G‐6‐PDH), 6‐phosphogluconate dehydrogenase (6‐PGDH) and β‐amylase activities in the seeds during the developmental period. At 135–165 DAF, the MDH activity remained stable, whereas that of 6‐PGDH reached its maximum, indicating that the seeds underwent vigorous metabolism. The findings of this study provide a theoretical basis for researching seed dormancy and seed harvest time.
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spelling pubmed-83621532021-08-17 Morphological, physiological and biochemical changes in Magnolia zenii Cheng seed during development Wang, Shan Shen, Yongbao Bao, Huapeng Physiol Plant Development, Growth and Differentiation An understanding of the seed dynamics of endangered plant species, such as Magnolia zenii Cheng, is important for successful conservation. This study examined the morphological, physiological and biochemical changes that occur in M. zenii Cheng during seed development to determine the appropriate harvest stage. The appearance of the seeds was influenced by the physiological and biochemical changes occurring during the developmental period, during which the colour of the fruits changed from green to red, while that of the seed changed from light brown to dark brown. There was a significant decrease in the seed moisture content from 90 to 120 days after flowering (DAF); however, there was no significant change from 135 to 165 DAF. The seeds from 135 DAF onwards showed developed cotyledonary embryos. The seed viability exceeded 95% from 135 DAF onwards; however, the germination percentage was 0, hypothesising that the seeds of M. zenii Cheng might exhibit physiological dormancy under certain conditions of this experiment. There was a significant increase in the fat, soluble sugar and soluble starch content of the seeds while approaching maturity. There were significant changes in malate dehydrogenase (MDH), glucose‐6‐phosphate dehydrogenase (G‐6‐PDH), 6‐phosphogluconate dehydrogenase (6‐PGDH) and β‐amylase activities in the seeds during the developmental period. At 135–165 DAF, the MDH activity remained stable, whereas that of 6‐PGDH reached its maximum, indicating that the seeds underwent vigorous metabolism. The findings of this study provide a theoretical basis for researching seed dormancy and seed harvest time. Blackwell Publishing Ltd 2021-06-06 2021-08 /pmc/articles/PMC8362153/ /pubmed/33937990 http://dx.doi.org/10.1111/ppl.13445 Text en © 2021 The Authors. Physiologia Plantarum published by John Wiley & Sons Ltd on behalf of Scandinavian Plant Physiology Society. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
spellingShingle Development, Growth and Differentiation
Wang, Shan
Shen, Yongbao
Bao, Huapeng
Morphological, physiological and biochemical changes in Magnolia zenii Cheng seed during development
title Morphological, physiological and biochemical changes in Magnolia zenii Cheng seed during development
title_full Morphological, physiological and biochemical changes in Magnolia zenii Cheng seed during development
title_fullStr Morphological, physiological and biochemical changes in Magnolia zenii Cheng seed during development
title_full_unstemmed Morphological, physiological and biochemical changes in Magnolia zenii Cheng seed during development
title_short Morphological, physiological and biochemical changes in Magnolia zenii Cheng seed during development
title_sort morphological, physiological and biochemical changes in magnolia zenii cheng seed during development
topic Development, Growth and Differentiation
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8362153/
https://www.ncbi.nlm.nih.gov/pubmed/33937990
http://dx.doi.org/10.1111/ppl.13445
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