Cargando…

Breeding system and pollination of two closely related bamboo species

An understanding of the breeding systems and pollination of agriculturally important plants is critical to germplasm improvement. Breeding system characteristics greatly influence the amount and spatial distribution of genetic variation within and amongst populations and influence the rarity and ext...

Descripción completa

Detalles Bibliográficos
Autores principales: Chen, Ling-Na, Cui, Yong-Zhong, Wong, Khoon-Meng, Li, De-Zhu, Yang, Han-Qi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5493747/
https://www.ncbi.nlm.nih.gov/pubmed/28685014
http://dx.doi.org/10.1093/aobpla/plx021
_version_ 1783247556371808256
author Chen, Ling-Na
Cui, Yong-Zhong
Wong, Khoon-Meng
Li, De-Zhu
Yang, Han-Qi
author_facet Chen, Ling-Na
Cui, Yong-Zhong
Wong, Khoon-Meng
Li, De-Zhu
Yang, Han-Qi
author_sort Chen, Ling-Na
collection PubMed
description An understanding of the breeding systems and pollination of agriculturally important plants is critical to germplasm improvement. Breeding system characteristics greatly influence the amount and spatial distribution of genetic variation within and amongst populations and influence the rarity and extinction vulnerability of plant species. Many woody bamboos have a long vegetative period (20–150 years) followed by gregarious monocarpy. Relatively, little is known about their pollination and breeding systems. We studied these characteristics in wild Dendrocalamus membranaceus populations and cultivated Dendrocalamus sinicus populations distributed in the Yunnan Province of China. Floral morphology, flower visitors and breeding system were studied from 2013 to 2015. Both bamboos were protogynous, but flowering periods of florets overlapped providing opportunities for self-pollination amongst florets, especially in D. membranaceus. There was no agamospermy in either species. Seed set of D. sinicus was low (0.42 ± 0.42 %) under natural pollination but higher (8.89 ± 2.55 %) after artificial xenogamy. Seed set of D. membranaceus was higher (7.49 ± 0.82 %) in mass flowering populations and 2.14 ± 0.25 % in sporadically flowering populations. The Asian honeybee Apis cerana could provide cross-pollination of D. membranaceus and D. sinicus, and flower visitation peaked at 1000–1200 h. Pollination limitation due to lack of pollinators or pollen was detected in the cultivated populations of D. sinicus and sporadically flowering populations of D. membranaceus. Pollination limitation was not obvious within mass flowering populations. Hand pollination could significantly increase seed set of these two bamboo species. Dendrocalamus membranaceus and D. sinicus were self-compatible and have a mixed-mating system with outcrossing being pre-dominant. Their seed production was limited by the quantity of pollen and pollinator activity. Honeybees were observed as effective pollinators.
format Online
Article
Text
id pubmed-5493747
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher Oxford University Press
record_format MEDLINE/PubMed
spelling pubmed-54937472017-07-06 Breeding system and pollination of two closely related bamboo species Chen, Ling-Na Cui, Yong-Zhong Wong, Khoon-Meng Li, De-Zhu Yang, Han-Qi AoB Plants Research Article An understanding of the breeding systems and pollination of agriculturally important plants is critical to germplasm improvement. Breeding system characteristics greatly influence the amount and spatial distribution of genetic variation within and amongst populations and influence the rarity and extinction vulnerability of plant species. Many woody bamboos have a long vegetative period (20–150 years) followed by gregarious monocarpy. Relatively, little is known about their pollination and breeding systems. We studied these characteristics in wild Dendrocalamus membranaceus populations and cultivated Dendrocalamus sinicus populations distributed in the Yunnan Province of China. Floral morphology, flower visitors and breeding system were studied from 2013 to 2015. Both bamboos were protogynous, but flowering periods of florets overlapped providing opportunities for self-pollination amongst florets, especially in D. membranaceus. There was no agamospermy in either species. Seed set of D. sinicus was low (0.42 ± 0.42 %) under natural pollination but higher (8.89 ± 2.55 %) after artificial xenogamy. Seed set of D. membranaceus was higher (7.49 ± 0.82 %) in mass flowering populations and 2.14 ± 0.25 % in sporadically flowering populations. The Asian honeybee Apis cerana could provide cross-pollination of D. membranaceus and D. sinicus, and flower visitation peaked at 1000–1200 h. Pollination limitation due to lack of pollinators or pollen was detected in the cultivated populations of D. sinicus and sporadically flowering populations of D. membranaceus. Pollination limitation was not obvious within mass flowering populations. Hand pollination could significantly increase seed set of these two bamboo species. Dendrocalamus membranaceus and D. sinicus were self-compatible and have a mixed-mating system with outcrossing being pre-dominant. Their seed production was limited by the quantity of pollen and pollinator activity. Honeybees were observed as effective pollinators. Oxford University Press 2017-05-29 /pmc/articles/PMC5493747/ /pubmed/28685014 http://dx.doi.org/10.1093/aobpla/plx021 Text en © The Authors 2017. Published by Oxford University Press on behalf of the Annals of Botany Company. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Chen, Ling-Na
Cui, Yong-Zhong
Wong, Khoon-Meng
Li, De-Zhu
Yang, Han-Qi
Breeding system and pollination of two closely related bamboo species
title Breeding system and pollination of two closely related bamboo species
title_full Breeding system and pollination of two closely related bamboo species
title_fullStr Breeding system and pollination of two closely related bamboo species
title_full_unstemmed Breeding system and pollination of two closely related bamboo species
title_short Breeding system and pollination of two closely related bamboo species
title_sort breeding system and pollination of two closely related bamboo species
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5493747/
https://www.ncbi.nlm.nih.gov/pubmed/28685014
http://dx.doi.org/10.1093/aobpla/plx021
work_keys_str_mv AT chenlingna breedingsystemandpollinationoftwocloselyrelatedbamboospecies
AT cuiyongzhong breedingsystemandpollinationoftwocloselyrelatedbamboospecies
AT wongkhoonmeng breedingsystemandpollinationoftwocloselyrelatedbamboospecies
AT lidezhu breedingsystemandpollinationoftwocloselyrelatedbamboospecies
AT yanghanqi breedingsystemandpollinationoftwocloselyrelatedbamboospecies