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Suppression of reproductive characteristics of the invasive plant Mikania micrantha by sweet potato competition

BACKGROUND: As a means of biologically controlling Mikania micrantha H.B.K. in Yunnan, China, the influence of sweet potato [Ipomoea batatas (L.) Lam.] on its reproductive characteristics was studied. The trial utilized a de Wit replacement series incorporating six ratios of sweet potato and M. micr...

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Autores principales: Shen, Shicai, Xu, Gaofeng, Clements, David Roy, Jin, Guimei, Liu, Shufang, Yang, Yanxian, Chen, Aidong, Zhang, Fudou, Kato-Noguchi, Hisashi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4913424/
https://www.ncbi.nlm.nih.gov/pubmed/27323798
http://dx.doi.org/10.1186/s12898-016-0085-9
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author Shen, Shicai
Xu, Gaofeng
Clements, David Roy
Jin, Guimei
Liu, Shufang
Yang, Yanxian
Chen, Aidong
Zhang, Fudou
Kato-Noguchi, Hisashi
author_facet Shen, Shicai
Xu, Gaofeng
Clements, David Roy
Jin, Guimei
Liu, Shufang
Yang, Yanxian
Chen, Aidong
Zhang, Fudou
Kato-Noguchi, Hisashi
author_sort Shen, Shicai
collection PubMed
description BACKGROUND: As a means of biologically controlling Mikania micrantha H.B.K. in Yunnan, China, the influence of sweet potato [Ipomoea batatas (L.) Lam.] on its reproductive characteristics was studied. The trial utilized a de Wit replacement series incorporating six ratios of sweet potato and M. micrantha plants in 25 m(2) plots over 2 years. RESULTS: Budding of M. micrantha occurred at the end of September; flowering and fruiting occurred from October to February. Flowering phenology of M. micrantha was delayed (P < 0.05), duration of flowering and fruiting was reduced (P < 0.05) and duration of bud formation was increased (P < 0.05) with increasing proportions of sweet potato. Reproductive allocation, reproductive investment and reproductive index of M. micrantha were significantly reduced (P < 0.05) with increasing sweet potato densities. Apidae bees, and Calliphoridae or Syrphidae flies were the most abundant visitors to M. micrantha flowers. Overall flower visits decreased (P < 0.05) as sweet potato increased. Thus the mechanism by which sweet potato suppressed sexual reproduction in M. micrantha was essentially two-fold: causing a delay in flowering phenology and reducing pollinator visits. The number, biomass, length, set rate, germination rate, and 1000-grain dry weight of M. micrantha seeds were suppressed (P < 0.05) by sweet potato competition. With proportional increases in sweet potato, sexual and asexual seedling populations of M. micrantha were significantly reduced (P < 0.05). The mortality of both seedling types increased (P < 0.05) with proportional increases in sweet potato. CONCLUSIONS: These results suggest that sweet potato significantly suppresses the reproductive ability of the invasive species M. micrantha, and is a promising alternative to traditional biological control and other methods of control. Planting sweet potato in conjunction with other control methods could provide a comprehensive strategy for managing M. micrantha. The scenario of controlling M. micrantha by utilizing a crop with a similar growth form may provide a useful model for similar management strategies in other systems.
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spelling pubmed-49134242016-06-21 Suppression of reproductive characteristics of the invasive plant Mikania micrantha by sweet potato competition Shen, Shicai Xu, Gaofeng Clements, David Roy Jin, Guimei Liu, Shufang Yang, Yanxian Chen, Aidong Zhang, Fudou Kato-Noguchi, Hisashi BMC Ecol Research Article BACKGROUND: As a means of biologically controlling Mikania micrantha H.B.K. in Yunnan, China, the influence of sweet potato [Ipomoea batatas (L.) Lam.] on its reproductive characteristics was studied. The trial utilized a de Wit replacement series incorporating six ratios of sweet potato and M. micrantha plants in 25 m(2) plots over 2 years. RESULTS: Budding of M. micrantha occurred at the end of September; flowering and fruiting occurred from October to February. Flowering phenology of M. micrantha was delayed (P < 0.05), duration of flowering and fruiting was reduced (P < 0.05) and duration of bud formation was increased (P < 0.05) with increasing proportions of sweet potato. Reproductive allocation, reproductive investment and reproductive index of M. micrantha were significantly reduced (P < 0.05) with increasing sweet potato densities. Apidae bees, and Calliphoridae or Syrphidae flies were the most abundant visitors to M. micrantha flowers. Overall flower visits decreased (P < 0.05) as sweet potato increased. Thus the mechanism by which sweet potato suppressed sexual reproduction in M. micrantha was essentially two-fold: causing a delay in flowering phenology and reducing pollinator visits. The number, biomass, length, set rate, germination rate, and 1000-grain dry weight of M. micrantha seeds were suppressed (P < 0.05) by sweet potato competition. With proportional increases in sweet potato, sexual and asexual seedling populations of M. micrantha were significantly reduced (P < 0.05). The mortality of both seedling types increased (P < 0.05) with proportional increases in sweet potato. CONCLUSIONS: These results suggest that sweet potato significantly suppresses the reproductive ability of the invasive species M. micrantha, and is a promising alternative to traditional biological control and other methods of control. Planting sweet potato in conjunction with other control methods could provide a comprehensive strategy for managing M. micrantha. The scenario of controlling M. micrantha by utilizing a crop with a similar growth form may provide a useful model for similar management strategies in other systems. BioMed Central 2016-06-20 /pmc/articles/PMC4913424/ /pubmed/27323798 http://dx.doi.org/10.1186/s12898-016-0085-9 Text en © The Author(s) 2016 Open AccessThis article is 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, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Article
Shen, Shicai
Xu, Gaofeng
Clements, David Roy
Jin, Guimei
Liu, Shufang
Yang, Yanxian
Chen, Aidong
Zhang, Fudou
Kato-Noguchi, Hisashi
Suppression of reproductive characteristics of the invasive plant Mikania micrantha by sweet potato competition
title Suppression of reproductive characteristics of the invasive plant Mikania micrantha by sweet potato competition
title_full Suppression of reproductive characteristics of the invasive plant Mikania micrantha by sweet potato competition
title_fullStr Suppression of reproductive characteristics of the invasive plant Mikania micrantha by sweet potato competition
title_full_unstemmed Suppression of reproductive characteristics of the invasive plant Mikania micrantha by sweet potato competition
title_short Suppression of reproductive characteristics of the invasive plant Mikania micrantha by sweet potato competition
title_sort suppression of reproductive characteristics of the invasive plant mikania micrantha by sweet potato competition
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4913424/
https://www.ncbi.nlm.nih.gov/pubmed/27323798
http://dx.doi.org/10.1186/s12898-016-0085-9
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