Genotypic variability in root length in pea (Pisum sativum L.) and lentil (Lens culinaris Medik.) cultivars in a semi‐arid environment based on mini‐rhizotron image capture
Abstract Physiological breeding is an approach that complements conventional breeding by providing characterizations of traits present in breeding populations. This allows breeders the ability to choose crosses based on desirable and adaptive traits, an approach that may be more reliable than select...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Plant Phenome Journal |
| Online Access: | https://doi.org/10.1002/ppj2.20037 |
| _version_ | 1797976342876127232 |
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| author | Maryse Bourgault Peggy Lamb Kevin McPhee Rebecca J. McGee Albert Vandenberg Tom Warkentin |
| author_facet | Maryse Bourgault Peggy Lamb Kevin McPhee Rebecca J. McGee Albert Vandenberg Tom Warkentin |
| author_sort | Maryse Bourgault |
| collection | DOAJ |
| description | Abstract Physiological breeding is an approach that complements conventional breeding by providing characterizations of traits present in breeding populations. This allows breeders the ability to choose crosses based on desirable and adaptive traits, an approach that may be more reliable than selection on yield alone. In this study, we determined how much genotypic variability was present in selected lines of modern field pea (Pisum sativum L.) and lentil (Lens culinaris Medik.) cultivars from Montana, North Dakota, Washington, and Saskatchewan, Canada, and if root growth, particularly at depth, improves the fitness of lines to semi‐arid environments. We conducted experiments at the Northern Agricultural Research Center of Montana State University from 2017 to 2019 inclusively to investigate root growth with mini‐rhizotrons in 29 field pea lines and 25 lentil lines. Results suggest there is large genotypic variability in root length across the soil profile and the proportion of root length found below 30 cm in both crops, and these root traits appear independent of each other. In field pea, the highest yielding cultivars were intermediary in both total root length and the proportion of root length below 30 cm, suggesting large root systems and/or deeper root profiles are not necessarily beneficial in this environment. By contrast, in lentil, total root length and root length found below 30 cm was well correlated with biomass and yield. For breeders interested in in improved adaptation to semi‐arid environments, it may be too early to optimize root systems, and above‐ground traits may still yield a better return on investment. |
| first_indexed | 2024-04-11T04:49:25Z |
| format | Article |
| id | doaj.art-f30cb99e340a43a2aa9b1f78f2d4ef64 |
| institution | Directory Open Access Journal |
| issn | 2578-2703 |
| language | English |
| last_indexed | 2024-04-11T04:49:25Z |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Plant Phenome Journal |
| spelling | doaj.art-f30cb99e340a43a2aa9b1f78f2d4ef642022-12-27T06:00:36ZengWileyPlant Phenome Journal2578-27032022-01-0151n/an/a10.1002/ppj2.20037Genotypic variability in root length in pea (Pisum sativum L.) and lentil (Lens culinaris Medik.) cultivars in a semi‐arid environment based on mini‐rhizotron image captureMaryse Bourgault0Peggy Lamb1Kevin McPhee2Rebecca J. McGee3Albert Vandenberg4Tom Warkentin5Plant Science Dep., College of Agriculture and Biosciences Univ. of Saskatchewan 51 Campus Drive Saskatoon SK S7N 5A8 CanadaNorthern Agricultural Research Center, College of Agriculture Montana State Univ. 3710 Assinniboine Road Havre MT 59501 USADep. of Plant Sciences and Plant Pathology, College of Agriculture Montana State Univ. Bozeman MT 59717 USAUSDA ARS, Grain Legume Genetics and Physiology Research, Washington State Univ. Pullman WA 99164 USAPlant Science Dep., College of Agriculture and Biosciences Univ. of Saskatchewan 51 Campus Drive Saskatoon SK S7N 5A8 CanadaPlant Science Dep., College of Agriculture and Biosciences Univ. of Saskatchewan 51 Campus Drive Saskatoon SK S7N 5A8 CanadaAbstract Physiological breeding is an approach that complements conventional breeding by providing characterizations of traits present in breeding populations. This allows breeders the ability to choose crosses based on desirable and adaptive traits, an approach that may be more reliable than selection on yield alone. In this study, we determined how much genotypic variability was present in selected lines of modern field pea (Pisum sativum L.) and lentil (Lens culinaris Medik.) cultivars from Montana, North Dakota, Washington, and Saskatchewan, Canada, and if root growth, particularly at depth, improves the fitness of lines to semi‐arid environments. We conducted experiments at the Northern Agricultural Research Center of Montana State University from 2017 to 2019 inclusively to investigate root growth with mini‐rhizotrons in 29 field pea lines and 25 lentil lines. Results suggest there is large genotypic variability in root length across the soil profile and the proportion of root length found below 30 cm in both crops, and these root traits appear independent of each other. In field pea, the highest yielding cultivars were intermediary in both total root length and the proportion of root length below 30 cm, suggesting large root systems and/or deeper root profiles are not necessarily beneficial in this environment. By contrast, in lentil, total root length and root length found below 30 cm was well correlated with biomass and yield. For breeders interested in in improved adaptation to semi‐arid environments, it may be too early to optimize root systems, and above‐ground traits may still yield a better return on investment.https://doi.org/10.1002/ppj2.20037 |
| spellingShingle | Maryse Bourgault Peggy Lamb Kevin McPhee Rebecca J. McGee Albert Vandenberg Tom Warkentin Genotypic variability in root length in pea (Pisum sativum L.) and lentil (Lens culinaris Medik.) cultivars in a semi‐arid environment based on mini‐rhizotron image capture Plant Phenome Journal |
| title | Genotypic variability in root length in pea (Pisum sativum L.) and lentil (Lens culinaris Medik.) cultivars in a semi‐arid environment based on mini‐rhizotron image capture |
| title_full | Genotypic variability in root length in pea (Pisum sativum L.) and lentil (Lens culinaris Medik.) cultivars in a semi‐arid environment based on mini‐rhizotron image capture |
| title_fullStr | Genotypic variability in root length in pea (Pisum sativum L.) and lentil (Lens culinaris Medik.) cultivars in a semi‐arid environment based on mini‐rhizotron image capture |
| title_full_unstemmed | Genotypic variability in root length in pea (Pisum sativum L.) and lentil (Lens culinaris Medik.) cultivars in a semi‐arid environment based on mini‐rhizotron image capture |
| title_short | Genotypic variability in root length in pea (Pisum sativum L.) and lentil (Lens culinaris Medik.) cultivars in a semi‐arid environment based on mini‐rhizotron image capture |
| title_sort | genotypic variability in root length in pea pisum sativum l and lentil lens culinaris medik cultivars in a semi arid environment based on mini rhizotron image capture |
| url | https://doi.org/10.1002/ppj2.20037 |
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