Date
2021-11-18Metadata
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Aufsatz
Combining Genetic Gain and Diversity in Plant Breeding: Heritability of Root Selection in Wheat Populations
Abstract
To increase the resilience of agroecological farming systems against weeds, pests, and pathogens, evolutionary breeding of diversified crop populations is highly promising. A fundamental challenge in population breeding is to combine effective selection and breeding progress while maintaining intraspecific diversity. A hydroponic system was tested for its suitability to non-destructively select root traits on a population level in order to achieve genetic gain and maintain diversity. Forty wheat progenies were selected for long seminal root length (SRL) and 40 for short SRL from a wheat composite cross population grown in a hydroponic system. Wheat progenies were multiplied, and a subset evaluated again in a hydroponic system. Preliminary tests in soil and competition experiments with a model weed were performed. The hydroponic selection for long SRL led to an increase of SRL by 1.6 cm (11.6%) in a single generation. Heritability for selection of SRL was 0.59. Selecting for short SRL had no effect. The preliminary soil-based test confirmed increased shoot length but not increased SRL. Preliminary competition experiments point to slightly improved competitive response of wheat progenies but no improved competitive effect on mustard. These results indicate a heritable selection effect for SRL on a population level, combining genetic gain and intraspecific diversity.
Citation
In: Sustainability Volume 13 / Issue 22 (2021-11-18) eissn:2071-1050Sponsorship
Gefördert durch den Publikationsfonds der Universität KasselCitation
@article{doi:10.17170/kobra-202112215305,
author={Timaeus, Johannes and Weedon, Odette Denise and Finckh, Maria Renate},
title={Combining Genetic Gain and Diversity in Plant Breeding: Heritability of Root Selection in Wheat Populations},
journal={Sustainability},
year={2021}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2021$n2021 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/13485 3000 Timaeus, Johannes 3010 Weedon, Odette Denise 3010 Finckh, Maria Renate 4000 Combining Genetic Gain and Diversity in Plant Breeding: Heritability of Root Selection in Wheat Populations / Timaeus, Johannes 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/13485=x R 4204 \$dAufsatz 4170 5550 {{Agrarökologie}} 5550 {{Pflanzenzüchtung}} 5550 {{Biodiversität}} 5550 {{Resilienz}} 5550 {{Weizen}} 5550 {{Wurzel}} 7136 ##0##http://hdl.handle.net/123456789/13485
2022-01-05T12:05:07Z 2022-01-05T12:05:07Z 2021-11-18 doi:10.17170/kobra-202112215305 http://hdl.handle.net/123456789/13485 Gefördert durch den Publikationsfonds der Universität Kassel eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ composite cross population organic plant breeding crop diversity genetic gain early vigor 630 Combining Genetic Gain and Diversity in Plant Breeding: Heritability of Root Selection in Wheat Populations Aufsatz To increase the resilience of agroecological farming systems against weeds, pests, and pathogens, evolutionary breeding of diversified crop populations is highly promising. A fundamental challenge in population breeding is to combine effective selection and breeding progress while maintaining intraspecific diversity. A hydroponic system was tested for its suitability to non-destructively select root traits on a population level in order to achieve genetic gain and maintain diversity. Forty wheat progenies were selected for long seminal root length (SRL) and 40 for short SRL from a wheat composite cross population grown in a hydroponic system. Wheat progenies were multiplied, and a subset evaluated again in a hydroponic system. Preliminary tests in soil and competition experiments with a model weed were performed. The hydroponic selection for long SRL led to an increase of SRL by 1.6 cm (11.6%) in a single generation. Heritability for selection of SRL was 0.59. Selecting for short SRL had no effect. The preliminary soil-based test confirmed increased shoot length but not increased SRL. Preliminary competition experiments point to slightly improved competitive response of wheat progenies but no improved competitive effect on mustard. These results indicate a heritable selection effect for SRL on a population level, combining genetic gain and intraspecific diversity. open access Timaeus, Johannes Weedon, Odette Denise Finckh, Maria Renate doi:10.3390/su132212778 Agrarökologie Pflanzenzüchtung Biodiversität Resilienz Weizen Wurzel publishedVersion eissn:2071-1050 Issue 22 Sustainability Volume 13 false 12778
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