Field Assessment of Alfalfa Populations Recurrently Selected for Stem Cell Wall Digestibility
Genetic variability for stem cell wall (CW) digestibility could be exploited to improve rumen‐fermentable energy in alfalfa ( Medicago sativa L.) forage. We evaluated in the field the response to recurrent selection for stem CW digestibility in alfalfa. Digestibility was assessed as the concentratio...
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crwiley:10.2135/cropsci2018.02.0119 2023-12-03T10:28:39+01:00 Field Assessment of Alfalfa Populations Recurrently Selected for Stem Cell Wall Digestibility Bertrand, Annick Claessens, Annie Thivierge, Marie-Noëlle Rocher, Solen Lajeunesse, Julie Castonguay, Yves Seguin, Philippe 2018 http://dx.doi.org/10.2135/cropsci2018.02.0119 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2135%2Fcropsci2018.02.0119 http://onlinelibrary.wiley.com/wol1/doi/10.2135/cropsci2018.02.0119/fullpdf en eng Wiley https://creativecommons.org/licenses/by/4.0/ Crop Science volume 58, issue 4, page 1632-1643 ISSN 0011-183X 1435-0653 Agronomy and Crop Science journal-article 2018 crwiley https://doi.org/10.2135/cropsci2018.02.0119 2023-11-09T14:26:29Z Genetic variability for stem cell wall (CW) digestibility could be exploited to improve rumen‐fermentable energy in alfalfa ( Medicago sativa L.) forage. We evaluated in the field the response to recurrent selection for stem CW digestibility in alfalfa. Digestibility was assessed as the concentration of glucose released after enzymatic hydrolysis of fiber (enzyme‐released glucose, ERG). Two initial cultivars, 54V54 and Orca, and populations obtained after successive cycles of divergent selection for stem CW digestibility (D−1, D−2, D+1, and D+2) were established at three field sites in north, central, and south of Québec. Field trials conducted over two growing seasons showed that populations obtained after two selection cycles (D+2) had significantly higher CW digestibility (+20.7 mg ERG g −1 CW) than initial cultivars (average of 13% improvement of digestibility). The D+2 populations did not differ from the initial cultivars with regard to biomass yield, winter survival, and stem water soluble‐carbohydrate concentration. Increases of ERG concentrations were observed in response to each selection cycle, and broad‐sense heritability highlights a moderate control of genetic factors over environmental factors for CW digestibility. Recurrent selection for stem CW digestibility is a valuable approach to increase fermentable energy in alfalfa forage and improve N utilization by ruminants. Article in Journal/Newspaper Orca Wiley Online Library (via Crossref) Crop Science 58 4 1632 1643 |
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Wiley Online Library (via Crossref) |
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English |
topic |
Agronomy and Crop Science |
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Agronomy and Crop Science Bertrand, Annick Claessens, Annie Thivierge, Marie-Noëlle Rocher, Solen Lajeunesse, Julie Castonguay, Yves Seguin, Philippe Field Assessment of Alfalfa Populations Recurrently Selected for Stem Cell Wall Digestibility |
topic_facet |
Agronomy and Crop Science |
description |
Genetic variability for stem cell wall (CW) digestibility could be exploited to improve rumen‐fermentable energy in alfalfa ( Medicago sativa L.) forage. We evaluated in the field the response to recurrent selection for stem CW digestibility in alfalfa. Digestibility was assessed as the concentration of glucose released after enzymatic hydrolysis of fiber (enzyme‐released glucose, ERG). Two initial cultivars, 54V54 and Orca, and populations obtained after successive cycles of divergent selection for stem CW digestibility (D−1, D−2, D+1, and D+2) were established at three field sites in north, central, and south of Québec. Field trials conducted over two growing seasons showed that populations obtained after two selection cycles (D+2) had significantly higher CW digestibility (+20.7 mg ERG g −1 CW) than initial cultivars (average of 13% improvement of digestibility). The D+2 populations did not differ from the initial cultivars with regard to biomass yield, winter survival, and stem water soluble‐carbohydrate concentration. Increases of ERG concentrations were observed in response to each selection cycle, and broad‐sense heritability highlights a moderate control of genetic factors over environmental factors for CW digestibility. Recurrent selection for stem CW digestibility is a valuable approach to increase fermentable energy in alfalfa forage and improve N utilization by ruminants. |
format |
Article in Journal/Newspaper |
author |
Bertrand, Annick Claessens, Annie Thivierge, Marie-Noëlle Rocher, Solen Lajeunesse, Julie Castonguay, Yves Seguin, Philippe |
author_facet |
Bertrand, Annick Claessens, Annie Thivierge, Marie-Noëlle Rocher, Solen Lajeunesse, Julie Castonguay, Yves Seguin, Philippe |
author_sort |
Bertrand, Annick |
title |
Field Assessment of Alfalfa Populations Recurrently Selected for Stem Cell Wall Digestibility |
title_short |
Field Assessment of Alfalfa Populations Recurrently Selected for Stem Cell Wall Digestibility |
title_full |
Field Assessment of Alfalfa Populations Recurrently Selected for Stem Cell Wall Digestibility |
title_fullStr |
Field Assessment of Alfalfa Populations Recurrently Selected for Stem Cell Wall Digestibility |
title_full_unstemmed |
Field Assessment of Alfalfa Populations Recurrently Selected for Stem Cell Wall Digestibility |
title_sort |
field assessment of alfalfa populations recurrently selected for stem cell wall digestibility |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.2135/cropsci2018.02.0119 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2135%2Fcropsci2018.02.0119 http://onlinelibrary.wiley.com/wol1/doi/10.2135/cropsci2018.02.0119/fullpdf |
genre |
Orca |
genre_facet |
Orca |
op_source |
Crop Science volume 58, issue 4, page 1632-1643 ISSN 0011-183X 1435-0653 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.2135/cropsci2018.02.0119 |
container_title |
Crop Science |
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58 |
container_issue |
4 |
container_start_page |
1632 |
op_container_end_page |
1643 |
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1784253432521031680 |