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Seed yield can be explained by altered yield components in field-grown western wheatgrass (Pascopyrum smithii Rydb.)

Western wheatgrass (Pascopyrum smithii Rydb.) is an important cool-season forage and turfgrass. However, due to seed dormancy and poor seedling vigor, it is difficult to develop high seed yield production systems, and assessing these components in response to seed yield. Based on multifactor orthogo...

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Autores principales: Chen, Zhao, Niu, Junpeng, Cao, Xinlong, Jiang, Wenbo, Cui, Jian, Wang, Quanzhen, Zhang, Quan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6884509/
https://www.ncbi.nlm.nih.gov/pubmed/31784680
http://dx.doi.org/10.1038/s41598-019-54586-0
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author Chen, Zhao
Niu, Junpeng
Cao, Xinlong
Jiang, Wenbo
Cui, Jian
Wang, Quanzhen
Zhang, Quan
author_facet Chen, Zhao
Niu, Junpeng
Cao, Xinlong
Jiang, Wenbo
Cui, Jian
Wang, Quanzhen
Zhang, Quan
author_sort Chen, Zhao
collection PubMed
description Western wheatgrass (Pascopyrum smithii Rydb.) is an important cool-season forage and turfgrass. However, due to seed dormancy and poor seedling vigor, it is difficult to develop high seed yield production systems, and assessing these components in response to seed yield. Based on multifactor orthogonally designed field experimental plots under various field management regimes, the effects of numbers of fertile tillers m(−2) (Y(1)), spikelets/fertile tiller (Y(2)), florets/spikelet (Y(3)), seed numbers/spikelet (Y(4)), and seed weight (Y(5)) on seed yield (Z) were determined over three successive years. Correlation analysis indicated that fertile tillers (Y(1)) was the most important seed yield component. And the biggest contribution of those five yield component is fertile tillers (Y(1)), followed by seed numbers/spikelet (Y(4)), spikelets/fertile tiller (Y(2)), florets/spikelet (Y(3)) and seed weight (Y(5)), respectively. By using ridge regression analysis, we have developed an accurate model of seed yield with its five components. Finally, the results of synergism and antagonism among these yield components on seed yield showed that fertile tillers and seed numbers/spikelet had an antagonistic effect on seed yield. Therefore, selection for high seed yield by direct selection for large values of fertile tillers and seed numbers/spikelet would be the most effective breeding strategy for western wheatgrass.
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spelling pubmed-68845092019-12-06 Seed yield can be explained by altered yield components in field-grown western wheatgrass (Pascopyrum smithii Rydb.) Chen, Zhao Niu, Junpeng Cao, Xinlong Jiang, Wenbo Cui, Jian Wang, Quanzhen Zhang, Quan Sci Rep Article Western wheatgrass (Pascopyrum smithii Rydb.) is an important cool-season forage and turfgrass. However, due to seed dormancy and poor seedling vigor, it is difficult to develop high seed yield production systems, and assessing these components in response to seed yield. Based on multifactor orthogonally designed field experimental plots under various field management regimes, the effects of numbers of fertile tillers m(−2) (Y(1)), spikelets/fertile tiller (Y(2)), florets/spikelet (Y(3)), seed numbers/spikelet (Y(4)), and seed weight (Y(5)) on seed yield (Z) were determined over three successive years. Correlation analysis indicated that fertile tillers (Y(1)) was the most important seed yield component. And the biggest contribution of those five yield component is fertile tillers (Y(1)), followed by seed numbers/spikelet (Y(4)), spikelets/fertile tiller (Y(2)), florets/spikelet (Y(3)) and seed weight (Y(5)), respectively. By using ridge regression analysis, we have developed an accurate model of seed yield with its five components. Finally, the results of synergism and antagonism among these yield components on seed yield showed that fertile tillers and seed numbers/spikelet had an antagonistic effect on seed yield. Therefore, selection for high seed yield by direct selection for large values of fertile tillers and seed numbers/spikelet would be the most effective breeding strategy for western wheatgrass. Nature Publishing Group UK 2019-11-29 /pmc/articles/PMC6884509/ /pubmed/31784680 http://dx.doi.org/10.1038/s41598-019-54586-0 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Chen, Zhao
Niu, Junpeng
Cao, Xinlong
Jiang, Wenbo
Cui, Jian
Wang, Quanzhen
Zhang, Quan
Seed yield can be explained by altered yield components in field-grown western wheatgrass (Pascopyrum smithii Rydb.)
title Seed yield can be explained by altered yield components in field-grown western wheatgrass (Pascopyrum smithii Rydb.)
title_full Seed yield can be explained by altered yield components in field-grown western wheatgrass (Pascopyrum smithii Rydb.)
title_fullStr Seed yield can be explained by altered yield components in field-grown western wheatgrass (Pascopyrum smithii Rydb.)
title_full_unstemmed Seed yield can be explained by altered yield components in field-grown western wheatgrass (Pascopyrum smithii Rydb.)
title_short Seed yield can be explained by altered yield components in field-grown western wheatgrass (Pascopyrum smithii Rydb.)
title_sort seed yield can be explained by altered yield components in field-grown western wheatgrass (pascopyrum smithii rydb.)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6884509/
https://www.ncbi.nlm.nih.gov/pubmed/31784680
http://dx.doi.org/10.1038/s41598-019-54586-0
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