Pollen Morphology and Variability Among Indian Cultivars of Chrysanthemum morifolium and Comparative Analysis with Genera of the Asteraceae Family

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This study analyzed pollen morphology in 134 cultivars of Chrysanthemum morifolium using scanning electron microscopy, measuring traits such as pollen shape and size, spine length and spine-row arrangement, surface ornamentation, and aperture type. The authors compared these palynomorphological characteristics with 14 genera in the Asteraceae using the PalDat database and applied cluster analysis and principal component analysis to classify cultivars based on pollen features. They report that some cultivars form distinct outgroups, which they interpret as consistent with geographic and environmental influences on evolution, and they highlight pollen metrics (e.g., length, form index, equatorial diameter) as potentially useful for taxonomy. A major caveat explicitly noted is that complete taxonomy of the genus is still expected to require integrated morphological, karyological, and molecular approaches rather than pollen traits alone. The paper does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

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Pollen Morphology and Variability Among Indian Cultivars of Chrysanthemum morifolium and Comparative Analysis with Genera of the Asteraceae Family | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Pollen Morphology and Variability Among Indian Cultivars of Chrysanthemum morifolium and Comparative Analysis with Genera of the Asteraceae Family Patil SA, Nimbalkar MS, Pagariya MC, Kulkarni AJ, Jadhav PR, Mane MP, and 6 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4222789/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 27 Aug, 2024 Read the published version in Genetic Resources and Crop Evolution → Version 1 posted 9 You are reading this latest preprint version Abstract This study investigates the pollen morphology of 134 Chrysanthemum morifolium Ramat cultivars through scanning electron microscopy (SEM). Chrysanthemum, a globally significant cut-flower crop, is renowned for its ornamental and medicinal properties. Morphology of a pollen grain, a microscopic flower structure known for being reproductive unit of higher plants was put forth for Scanning Electron Microscopy analysis that revealed diverse Chrysanthemum pollen traits, including shape, size, spine length, spine rows between colpi, ornamentation, and aperture type. Comparative analysis with 14 genera from daisy family, the PalDat database further explains uniqueness of Chrysanthemum in Asteraceae. Statistical analyses, employing cluster and principal component analyses, classify Chrysanthemum cultivars based on their pollen morphological characters. Significant cultivars exhibit distinct outgroups, suggestive of geographic and environmental impacts on evolution. The study suggests the significance of pollen characters, such as length, form index, and equatorial diameter in taxonomy and classification. This study contributes considerations into Chrysanthemum pollen morphology, enhancing knowledge of intrageneric relationships. The conclusions feature the importance of SEM techniques in identifying species based on palynomorphological traits. Future research, encompassing morphological, karyological, and molecular aspects, is recommended for a complete taxonomy of the Chrysanthemum genus. Pollen morphology Palynology Scanning electron microscope PCA Asteraceae Cluster analysis Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 27 Aug, 2024 Read the published version in Genetic Resources and Crop Evolution → Version 1 posted Editorial decision: Revision requested 23 Apr, 2024 Reviews received at journal 23 Apr, 2024 Reviews received at journal 14 Apr, 2024 Reviewers agreed at journal 13 Apr, 2024 Reviewers agreed at journal 06 Apr, 2024 Reviewers invited by journal 06 Apr, 2024 Submission checks completed at journal 06 Apr, 2024 Editor assigned by journal 06 Apr, 2024 First submitted to journal 05 Apr, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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