Uncovering Trait Associations Resulting in Maximal Seed Yield in Winter and Spring Oilseed Rape
Seed yield is a complex trait for many crop species including oilseed rape (OSR) (Brassica napus), the second most important oilseed crop worldwide. Studies have focused on the contribution of distinct factors in seed yield such as environmental cues, agronomical practices, growth conditions, or spe...
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2021-09-01
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doaj-62030f120c1b47a98d5c4a4179bc3d702021-09-06T06:08:38ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2021-09-011210.3389/fpls.2021.697576697576Uncovering Trait Associations Resulting in Maximal Seed Yield in Winter and Spring Oilseed RapeLaura Siles0Kirsty L. Hassall1Cristina Sanchis Gritsch2Peter J. Eastmond3Smita Kurup4Department of Plant Sciences, Rothamsted Research, Harpenden, United KingdomDepartment of Computational and Analytical Sciences, Rothamsted Research, Harpenden, United KingdomDepartment of Plant Sciences, Rothamsted Research, Harpenden, United KingdomDepartment of Plant Sciences, Rothamsted Research, Harpenden, United KingdomDepartment of Plant Sciences, Rothamsted Research, Harpenden, United KingdomSeed yield is a complex trait for many crop species including oilseed rape (OSR) (Brassica napus), the second most important oilseed crop worldwide. Studies have focused on the contribution of distinct factors in seed yield such as environmental cues, agronomical practices, growth conditions, or specific phenotypic traits at the whole plant level, such as number of pods in a plant. However, how female reproductive traits contribute to whole plant level traits, and hence to seed yield, has been largely ignored. Here, we describe the combined contribution of 33 phenotypic traits within a B. napus diversity set population and their trade-offs at the whole plant and organ level, along with their interaction with plant level traits. Our results revealed that both Winter OSR (WOSR) and Spring OSR (SOSR); the two more economically important OSR groups in terms of oil production; share a common dominant reproductive strategy for seed yield. In this strategy, the main inflorescence is the principal source of seed yield, producing a good number of ovules, a large number of long pods with a concomitantly high number of seeds per pod. Moreover, we observed that WOSR opted for additional reproductive strategies than SOSR, presenting more plasticity to maximise seed yield. Overall, we conclude that OSR adopts a key strategy to ensure maximal seed yield and propose an ideal ideotype highlighting crucial phenotypic traits that could be potential targets for breeding.https://www.frontiersin.org/articles/10.3389/fpls.2021.697576/fullBrassica napusoilseed rapeovule numberplant architectureseed yieldseed number |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Laura Siles Kirsty L. Hassall Cristina Sanchis Gritsch Peter J. Eastmond Smita Kurup |
spellingShingle |
Laura Siles Kirsty L. Hassall Cristina Sanchis Gritsch Peter J. Eastmond Smita Kurup Uncovering Trait Associations Resulting in Maximal Seed Yield in Winter and Spring Oilseed Rape Frontiers in Plant Science Brassica napus oilseed rape ovule number plant architecture seed yield seed number |
author_facet |
Laura Siles Kirsty L. Hassall Cristina Sanchis Gritsch Peter J. Eastmond Smita Kurup |
author_sort |
Laura Siles |
title |
Uncovering Trait Associations Resulting in Maximal Seed Yield in Winter and Spring Oilseed Rape |
title_short |
Uncovering Trait Associations Resulting in Maximal Seed Yield in Winter and Spring Oilseed Rape |
title_full |
Uncovering Trait Associations Resulting in Maximal Seed Yield in Winter and Spring Oilseed Rape |
title_fullStr |
Uncovering Trait Associations Resulting in Maximal Seed Yield in Winter and Spring Oilseed Rape |
title_full_unstemmed |
Uncovering Trait Associations Resulting in Maximal Seed Yield in Winter and Spring Oilseed Rape |
title_sort |
uncovering trait associations resulting in maximal seed yield in winter and spring oilseed rape |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Plant Science |
issn |
1664-462X |
publishDate |
2021-09-01 |
description |
Seed yield is a complex trait for many crop species including oilseed rape (OSR) (Brassica napus), the second most important oilseed crop worldwide. Studies have focused on the contribution of distinct factors in seed yield such as environmental cues, agronomical practices, growth conditions, or specific phenotypic traits at the whole plant level, such as number of pods in a plant. However, how female reproductive traits contribute to whole plant level traits, and hence to seed yield, has been largely ignored. Here, we describe the combined contribution of 33 phenotypic traits within a B. napus diversity set population and their trade-offs at the whole plant and organ level, along with their interaction with plant level traits. Our results revealed that both Winter OSR (WOSR) and Spring OSR (SOSR); the two more economically important OSR groups in terms of oil production; share a common dominant reproductive strategy for seed yield. In this strategy, the main inflorescence is the principal source of seed yield, producing a good number of ovules, a large number of long pods with a concomitantly high number of seeds per pod. Moreover, we observed that WOSR opted for additional reproductive strategies than SOSR, presenting more plasticity to maximise seed yield. Overall, we conclude that OSR adopts a key strategy to ensure maximal seed yield and propose an ideal ideotype highlighting crucial phenotypic traits that could be potential targets for breeding. |
topic |
Brassica napus oilseed rape ovule number plant architecture seed yield seed number |
url |
https://www.frontiersin.org/articles/10.3389/fpls.2021.697576/full |
work_keys_str_mv |
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