Low red/far-red ratios delay spike and stem growth in wheat
The responses to low red light/far-red light (R/FR) ratios simulating dense stands were evaluated in wheat (Triticum aestivum L) cultivars released at different times in the 20th century and consequently resulting from an increasingly prolonged breeding and selection history. While tillering responses to the R/FR ratio were unaffected by the cultivars, low R/FR ratios reduced grain yield per plant (primarily grain number and secondarily grain weight per plant) particularly in modern cultivars. Low R/FR ratios delayed spike growth and development, reduced the expression of spike marker genes, accelerated the development of florets already initiated, and reduced the number of fertile florets at anthesis. It is noteworthy that low R/FR ratios did not promote stem or leaf sheath growth and therefore the observed reduction of yield cannot be accounted for as a consequence of divergence of resources towards increased plant stature. It is proposed that the regulation of yield components by the R/FR ratio could help plants to adjust to the limited availability of resources under crop conditions.
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Format: | article biblioteca |
Language: | eng |
Subjects: | VEGETABLE PROTEIN, GENE EXPRESSION REGULATION, GENETICS, GROWTH, DEVELOPMENT AND AGING, LIGHT, METABOLISM, PLANT STEM, RADIATION EXPOSURE, WHEAT, GENE EXPRESSION REGULATION, DEVELOPMENTAL, GENE EXPRESSION REGULATION, PLANT, PLANT PROTEINS, PLANT STEMS, TRITICUM, |
Online Access: | http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2010Ugarte |
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snrd:2010Ugarte2021-10-15T16:56:07Z Ugarte, C. C. Trupkin, S. A. Ghiglione, H. Slafer, G. Casal, J. J. 2010 The responses to low red light/far-red light (R/FR) ratios simulating dense stands were evaluated in wheat (Triticum aestivum L) cultivars released at different times in the 20th century and consequently resulting from an increasingly prolonged breeding and selection history. While tillering responses to the R/FR ratio were unaffected by the cultivars, low R/FR ratios reduced grain yield per plant (primarily grain number and secondarily grain weight per plant) particularly in modern cultivars. Low R/FR ratios delayed spike growth and development, reduced the expression of spike marker genes, accelerated the development of florets already initiated, and reduced the number of fertile florets at anthesis. It is noteworthy that low R/FR ratios did not promote stem or leaf sheath growth and therefore the observed reduction of yield cannot be accounted for as a consequence of divergence of resources towards increased plant stature. It is proposed that the regulation of yield components by the R/FR ratio could help plants to adjust to the limited availability of resources under crop conditions. application/pdf 10.1093/jxb/erq140 1460-2431 http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2010Ugarte eng info:eu-repo/semantics/openAccess openAccess http://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section4 Journal of experimental botany Vol.61, no.11 3151-3162 https://academic.oup.com/jxb VEGETABLE PROTEIN GENE EXPRESSION REGULATION GENETICS GROWTH, DEVELOPMENT AND AGING LIGHT METABOLISM PLANT STEM RADIATION EXPOSURE WHEAT GENE EXPRESSION REGULATION, DEVELOPMENTAL GENE EXPRESSION REGULATION, PLANT PLANT PROTEINS PLANT STEMS TRITICUM Low red/far-red ratios delay spike and stem growth in wheat article info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion publishedVersion |
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VEGETABLE PROTEIN GENE EXPRESSION REGULATION GENETICS GROWTH, DEVELOPMENT AND AGING LIGHT METABOLISM PLANT STEM RADIATION EXPOSURE WHEAT GENE EXPRESSION REGULATION, DEVELOPMENTAL GENE EXPRESSION REGULATION, PLANT PLANT PROTEINS PLANT STEMS TRITICUM VEGETABLE PROTEIN GENE EXPRESSION REGULATION GENETICS GROWTH, DEVELOPMENT AND AGING LIGHT METABOLISM PLANT STEM RADIATION EXPOSURE WHEAT GENE EXPRESSION REGULATION, DEVELOPMENTAL GENE EXPRESSION REGULATION, PLANT PLANT PROTEINS PLANT STEMS TRITICUM |
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VEGETABLE PROTEIN GENE EXPRESSION REGULATION GENETICS GROWTH, DEVELOPMENT AND AGING LIGHT METABOLISM PLANT STEM RADIATION EXPOSURE WHEAT GENE EXPRESSION REGULATION, DEVELOPMENTAL GENE EXPRESSION REGULATION, PLANT PLANT PROTEINS PLANT STEMS TRITICUM VEGETABLE PROTEIN GENE EXPRESSION REGULATION GENETICS GROWTH, DEVELOPMENT AND AGING LIGHT METABOLISM PLANT STEM RADIATION EXPOSURE WHEAT GENE EXPRESSION REGULATION, DEVELOPMENTAL GENE EXPRESSION REGULATION, PLANT PLANT PROTEINS PLANT STEMS TRITICUM Ugarte, C. C. Trupkin, S. A. Ghiglione, H. Slafer, G. Casal, J. J. Low red/far-red ratios delay spike and stem growth in wheat |
description |
The responses to low red light/far-red light (R/FR) ratios simulating dense stands were evaluated in wheat (Triticum aestivum L) cultivars released at different times in the 20th century and consequently resulting from an increasingly prolonged breeding and selection history. While tillering responses to the R/FR ratio were unaffected by the cultivars, low R/FR ratios reduced grain yield per plant (primarily grain number and secondarily grain weight per plant) particularly in modern cultivars. Low R/FR ratios delayed spike growth and development, reduced the expression of spike marker genes, accelerated the development of florets already initiated, and reduced the number of fertile florets at anthesis. It is noteworthy that low R/FR ratios did not promote stem or leaf sheath growth and therefore the observed reduction of yield cannot be accounted for as a consequence of divergence of resources towards increased plant stature. It is proposed that the regulation of yield components by the R/FR ratio could help plants to adjust to the limited availability of resources under crop conditions. |
format |
article |
topic_facet |
VEGETABLE PROTEIN GENE EXPRESSION REGULATION GENETICS GROWTH, DEVELOPMENT AND AGING LIGHT METABOLISM PLANT STEM RADIATION EXPOSURE WHEAT GENE EXPRESSION REGULATION, DEVELOPMENTAL GENE EXPRESSION REGULATION, PLANT PLANT PROTEINS PLANT STEMS TRITICUM |
author |
Ugarte, C. C. Trupkin, S. A. Ghiglione, H. Slafer, G. Casal, J. J. |
author_facet |
Ugarte, C. C. Trupkin, S. A. Ghiglione, H. Slafer, G. Casal, J. J. |
author_sort |
Ugarte, C. C. |
title |
Low red/far-red ratios delay spike and stem growth in wheat |
title_short |
Low red/far-red ratios delay spike and stem growth in wheat |
title_full |
Low red/far-red ratios delay spike and stem growth in wheat |
title_fullStr |
Low red/far-red ratios delay spike and stem growth in wheat |
title_full_unstemmed |
Low red/far-red ratios delay spike and stem growth in wheat |
title_sort |
low red/far-red ratios delay spike and stem growth in wheat |
url |
http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2010Ugarte |
work_keys_str_mv |
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_version_ |
1756546320615604224 |