Temporal profiling of meiotic asynchrony between florets for wheat-fertility studies

Temporal profiling of meiotic asynchrony between florets for wheat-fertility studies | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 10 November 2025 V1 Latest version Share on Temporal profiling of meiotic asynchrony between florets for wheat-fertility studies Authors : Duo Jiang 0000-0002-5373-218X , Olivier Turc , Aurélien Ausset , Alexis Bédiée , Jessica Bertheloot , Denis Vile , and B. Parent [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.176279115.51779226/v1 228 views 99 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Wheat grain number integrates fate of individual florets, strongly affected by environmental stress during sensitive stages like meiosis. Because development is asynchronous across tillers, spikelets, and florets, it is hard to distinguish true stress tolerance from stress escape. Based on morphological and destructive measurements of spike and anther length in four controlled-environment experiments, we developed a framework to track all floret developmental stages at plant level, and particularly meiosis. We applied this framework in two case studies for connecting within-plant developmental asynchrony to reproductive success under favorable and heat stress conditions. All florets showed a common relative growth rate, producing stable and additive developmental delays across tillers, spikelets, and floret positions. This generated a developmental map for every floret based on simple external traits. Under favorable conditions, grain set probability at floret level combined both positional and developmental effects within a spike. Under heat stress, grain loss occurred only in florets at meiosis during the stress, allowing to quantify a true "stress response", while later florets escaped damage. This framework offers a quantitative tool to understand and predict floret development and link it to grain set, clearly distinguishing timing effects from positional influences and separating true tolerance from stress escape. Supplementary Material File (figures_main_visual_caption_pce.pdf) Download 6.35 MB File (main_last_version.docx) Download 212.00 KB Information & Authors Information Version history V1 Version 1 10 November 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords development floret development floret fertility grain number meiosis Authors Affiliations Duo Jiang 0000-0002-5373-218X Laboratoire d'Ecophysiologie des Plantes sous Stress Environnementaux View all articles by this author Olivier Turc Laboratoire d'Ecophysiologie des Plantes sous Stress Environnementaux View all articles by this author Aurélien Ausset Laboratoire d'Ecophysiologie des Plantes sous Stress Environnementaux View all articles by this author Alexis Bédiée Laboratoire d'Ecophysiologie des Plantes sous Stress Environnementaux View all articles by this author Jessica Bertheloot Laboratoire d'Ecophysiologie des Plantes sous Stress Environnementaux View all articles by this author Denis Vile Laboratoire d'Ecophysiologie des Plantes sous Stress Environnementaux View all articles by this author B. Parent [email protected] Laboratoire d'Ecophysiologie des Plantes sous Stress Environnementaux View all articles by this author Metrics & Citations Metrics Article Usage 228 views 99 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Duo Jiang, Olivier Turc, Aurélien Ausset, et al. Temporal profiling of meiotic asynchrony between florets for wheat-fertility studies. Authorea . 10 November 2025. DOI: https://doi.org/10.22541/au.176279115.51779226/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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