The Relationships between Plant Developmental Traits and Winter Field Survival in Rye (<i>Secale cereale</i> L.)

Overwintering cereals accumulate low temperature tolerance (LTT) during cold acclimation in the autumn. Simultaneously, the plants adjust to the colder season by making developmental changes at the shoot apical meristem. These processes lead to higher winter hardiness in winter rye varieties (<i&...

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Autores principales:	Hirbod Bahrani, Monica Båga, Jamie Larsen, Robert J. Graf, Andre Laroche, Ravindra N. Chibbar
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	winter cereals winter field survival low temperature tolerance final leaf number plant height prostrate growth habit Botany QK1-989
Acceso en línea:	https://doaj.org/article/64dc06c8ca79462796537ac59402ed0c
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spelling	oai:doaj.org-article:64dc06c8ca79462796537ac59402ed0c2021-11-25T18:46:43ZThe Relationships between Plant Developmental Traits and Winter Field Survival in Rye (<i>Secale cereale</i> L.)10.3390/plants101124552223-7747https://doaj.org/article/64dc06c8ca79462796537ac59402ed0c2021-11-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2455https://doaj.org/toc/2223-7747Overwintering cereals accumulate low temperature tolerance (LTT) during cold acclimation in the autumn. Simultaneously, the plants adjust to the colder season by making developmental changes at the shoot apical meristem. These processes lead to higher winter hardiness in winter rye varieties (<i>Secale cereale</i> L.) adapted to Northern latitudes as compared to other cereal crops. To dissect the winter-hardiness trait in rye, a panel of 96 genotypes of different origins and growth habits was assessed for winter field survival (WFS), LTT, and six developmental traits. Best Linear Unbiased Estimates for WFS determined from five field trials correlated strongly with LTT (r = 0.90, <i>p</i> < 0.001); thus, cold acclimation efficiency was the major contributor to WFS. WFS also correlated strongly (<i>p</i> < 0.001) with final leaf number (r = 0.80), prostrate growth habit (r = 0.61), plant height (r = 0.34), but showed weaker associations with top internode length (r = 0.30, <i>p <</i> 0.01) and days to anthesis (r = 0.25, <i>p <</i> 0.05). The heritability estimates (<i>h<sup>2</sup></i>) for WFS-associated traits ranged from 0.45 (prostrate growth habit) to 0.81 (final leaf number) and were overall higher than for WFS (<i>h</i><sup>2</sup> = 0.48). All developmental traits associated with WFS and LTT are postulated to be regulated by phytohormone levels at shoot apical meristem.Hirbod BahraniMonica BågaJamie LarsenRobert J. GrafAndre LarocheRavindra N. ChibbarMDPI AGarticlewinter cerealswinter field survivallow temperature tolerancefinal leaf numberplant heightprostrate growth habitBotanyQK1-989ENPlants, Vol 10, Iss 2455, p 2455 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	winter cereals winter field survival low temperature tolerance final leaf number plant height prostrate growth habit Botany QK1-989
spellingShingle	winter cereals winter field survival low temperature tolerance final leaf number plant height prostrate growth habit Botany QK1-989 Hirbod Bahrani Monica Båga Jamie Larsen Robert J. Graf Andre Laroche Ravindra N. Chibbar The Relationships between Plant Developmental Traits and Winter Field Survival in Rye (<i>Secale cereale</i> L.)
description	Overwintering cereals accumulate low temperature tolerance (LTT) during cold acclimation in the autumn. Simultaneously, the plants adjust to the colder season by making developmental changes at the shoot apical meristem. These processes lead to higher winter hardiness in winter rye varieties (<i>Secale cereale</i> L.) adapted to Northern latitudes as compared to other cereal crops. To dissect the winter-hardiness trait in rye, a panel of 96 genotypes of different origins and growth habits was assessed for winter field survival (WFS), LTT, and six developmental traits. Best Linear Unbiased Estimates for WFS determined from five field trials correlated strongly with LTT (r = 0.90, <i>p</i> < 0.001); thus, cold acclimation efficiency was the major contributor to WFS. WFS also correlated strongly (<i>p</i> < 0.001) with final leaf number (r = 0.80), prostrate growth habit (r = 0.61), plant height (r = 0.34), but showed weaker associations with top internode length (r = 0.30, <i>p <</i> 0.01) and days to anthesis (r = 0.25, <i>p <</i> 0.05). The heritability estimates (<i>h<sup>2</sup></i>) for WFS-associated traits ranged from 0.45 (prostrate growth habit) to 0.81 (final leaf number) and were overall higher than for WFS (<i>h</i><sup>2</sup> = 0.48). All developmental traits associated with WFS and LTT are postulated to be regulated by phytohormone levels at shoot apical meristem.
format	article
author	Hirbod Bahrani Monica Båga Jamie Larsen Robert J. Graf Andre Laroche Ravindra N. Chibbar
author_facet	Hirbod Bahrani Monica Båga Jamie Larsen Robert J. Graf Andre Laroche Ravindra N. Chibbar
author_sort	Hirbod Bahrani
title	The Relationships between Plant Developmental Traits and Winter Field Survival in Rye (<i>Secale cereale</i> L.)
title_short	The Relationships between Plant Developmental Traits and Winter Field Survival in Rye (<i>Secale cereale</i> L.)
title_full	The Relationships between Plant Developmental Traits and Winter Field Survival in Rye (<i>Secale cereale</i> L.)
title_fullStr	The Relationships between Plant Developmental Traits and Winter Field Survival in Rye (<i>Secale cereale</i> L.)
title_full_unstemmed	The Relationships between Plant Developmental Traits and Winter Field Survival in Rye (<i>Secale cereale</i> L.)
title_sort	relationships between plant developmental traits and winter field survival in rye (<i>secale cereale</i> l.)
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/64dc06c8ca79462796537ac59402ed0c
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The Relationships between Plant Developmental Traits and Winter Field Survival in Rye (<i>Secale cereale</i> L.)

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