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Both Male and Female Malfunction Contributes to Yield Reduction under Water Stress during Meiosis in Bread Wheat
Water stress during meiosis in wheat is a major constraint to yield especially for the rainfed farming regions. Pollen sterility has been proposed as the most sensitive process leading to low seed set (low % of fertile spikelets), but here we show this is not universal, and that the development of f...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5222847/ https://www.ncbi.nlm.nih.gov/pubmed/28119733 http://dx.doi.org/10.3389/fpls.2016.02071 |
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author | Onyemaobi, Ifeyinwa Liu, Hui Siddique, Kadambot H. M. Yan, Guijun |
author_facet | Onyemaobi, Ifeyinwa Liu, Hui Siddique, Kadambot H. M. Yan, Guijun |
author_sort | Onyemaobi, Ifeyinwa |
collection | PubMed |
description | Water stress during meiosis in wheat is a major constraint to yield especially for the rainfed farming regions. Pollen sterility has been proposed as the most sensitive process leading to low seed set (low % of fertile spikelets), but here we show this is not universal, and that the development of female reproductive parts is equally if not more sensitive than male parts in many wheat cultivars. The first experiment examined water stress during meiosis in 46 wheat genotypes. The reduction in seed set varied widely, ranging from 6 to 48%. The second experiment differentiated the effect of water stress on the male or the female reproductive part in 13 wheat genotypes. Water stress was imposed during meiosis, with plants cross-pollinated 5 days later with pollen from stressed or unstressed plants used to pollinate emasculated stressed or unstressed female parts. Seed set and kernel weight were measured at maturity. Contrary to the well-held view that the male reproductive part is the major contributor to seed set reduction when water stress is experienced during meiosis, the stressed-female part was also a predominant contributor in four wheat genotypes among the 13 genotypes examined. This strongly indicates that both male and female parts are responsible for yield reduction when water-stressed during meiosis and suggests that it may be possible to breed tolerant wheat cultivars combining tolerance from both male and female reproductive parts. |
format | Online Article Text |
id | pubmed-5222847 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-52228472017-01-24 Both Male and Female Malfunction Contributes to Yield Reduction under Water Stress during Meiosis in Bread Wheat Onyemaobi, Ifeyinwa Liu, Hui Siddique, Kadambot H. M. Yan, Guijun Front Plant Sci Plant Science Water stress during meiosis in wheat is a major constraint to yield especially for the rainfed farming regions. Pollen sterility has been proposed as the most sensitive process leading to low seed set (low % of fertile spikelets), but here we show this is not universal, and that the development of female reproductive parts is equally if not more sensitive than male parts in many wheat cultivars. The first experiment examined water stress during meiosis in 46 wheat genotypes. The reduction in seed set varied widely, ranging from 6 to 48%. The second experiment differentiated the effect of water stress on the male or the female reproductive part in 13 wheat genotypes. Water stress was imposed during meiosis, with plants cross-pollinated 5 days later with pollen from stressed or unstressed plants used to pollinate emasculated stressed or unstressed female parts. Seed set and kernel weight were measured at maturity. Contrary to the well-held view that the male reproductive part is the major contributor to seed set reduction when water stress is experienced during meiosis, the stressed-female part was also a predominant contributor in four wheat genotypes among the 13 genotypes examined. This strongly indicates that both male and female parts are responsible for yield reduction when water-stressed during meiosis and suggests that it may be possible to breed tolerant wheat cultivars combining tolerance from both male and female reproductive parts. Frontiers Media S.A. 2017-01-10 /pmc/articles/PMC5222847/ /pubmed/28119733 http://dx.doi.org/10.3389/fpls.2016.02071 Text en Copyright © 2017 Onyemaobi, Liu, Siddique and Yan. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Plant Science Onyemaobi, Ifeyinwa Liu, Hui Siddique, Kadambot H. M. Yan, Guijun Both Male and Female Malfunction Contributes to Yield Reduction under Water Stress during Meiosis in Bread Wheat |
title | Both Male and Female Malfunction Contributes to Yield Reduction under Water Stress during Meiosis in Bread Wheat |
title_full | Both Male and Female Malfunction Contributes to Yield Reduction under Water Stress during Meiosis in Bread Wheat |
title_fullStr | Both Male and Female Malfunction Contributes to Yield Reduction under Water Stress during Meiosis in Bread Wheat |
title_full_unstemmed | Both Male and Female Malfunction Contributes to Yield Reduction under Water Stress during Meiosis in Bread Wheat |
title_short | Both Male and Female Malfunction Contributes to Yield Reduction under Water Stress during Meiosis in Bread Wheat |
title_sort | both male and female malfunction contributes to yield reduction under water stress during meiosis in bread wheat |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5222847/ https://www.ncbi.nlm.nih.gov/pubmed/28119733 http://dx.doi.org/10.3389/fpls.2016.02071 |
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