Responses of Barley to High Ambient Temperature Are Modulated by Vernalization

Ambient temperatures are increasing due to climate change. Cereal crops development and production will be affected consequently. Flowering time is a key factor for adaptation of small grain cereals and, therefore, exploring developmental responses of barley to rising temperatures is required. In th...

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Published inFrontiers in plant science Vol. 12; p. 776982
Main Authors Ochagavía, Helga, Kiss, Tibor, Karsai, Ildikó, Casas, Ana M, Igartua, Ernesto
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 25.01.2022
Subjects
barley
development
flowering time
Plant Science
PPD-H1
temperature
VRN-H1
development
flowering time
vernalization
PPD-H1
temperature
barley
VRN-H1
VRN-H2
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Summary:Ambient temperatures are increasing due to climate change. Cereal crops development and production will be affected consequently. Flowering time is a key factor for adaptation of small grain cereals and, therefore, exploring developmental responses of barley to rising temperatures is required. In this work, we studied phasic growth, and inflorescence traits related to yield, in eight near isogenic lines of barley ( L.) differing at the , and genes, representing different growth habits. The lines were grown in contrasting vernalization treatments, under two temperature regimes (18 and 25°C), in long days. Lines with recessive presented delayed development compared to lines with the sensitive allele, across the two growth phases considered. High temperature delayed flowering in all unvernalized plants, and in vernalized spring barleys carrying the insensitive allele, whilst it accelerated flowering in spring barleys with the sensitive allele. This finding evidenced an interaction between , temperature and vernalization. At the high temperature, lines in spring backgrounds ( ) yielded more, whereas lines with were best in background. Our study revealed new information that will support breeding high-yielding cultivars with specific combinations of major adaptation genes tailored to future climatic conditions.
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This article was submitted to Crop and Product Physiology, a section of the journal Frontiers in Plant Science
Reviewed by: Tatyana Efremova, Institute of Cytology and Genetics, RAS, Russia; Maria Von Korff Schmising, Heinrich Heine University of Düsseldorf, Germany; Yong Jia, Murdoch University, Australia; Daniel Julio Miralles, University of Buenos Aires, Argentina
Edited by: Luis A. N. Aguirrezabal, National University of Mar del Plata, Argentina
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2021.776982