Comprehensive Evaluation of Hybrid Progeny of Catalpa Tree Species and Selection of Superior Hybrid Combinations

Comprehensive Evaluation of Hybrid Progeny of Catalpa Tree Species and Selection of Superior Hybrid Combinations | 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 Comprehensive Evaluation of Hybrid Progeny of Catalpa Tree Species and Selection of Superior Hybrid Combinations Feng Li, Wenjun Ma, Junhui Wang, Peiyao Xin, Yang Zhao This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7464399/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 21 Jan, 2026 Read the published version in New Forests → Version 1 posted 10 You are reading this latest preprint version Abstract Hybrid breeding enhances forest genetic improvement by conferring offspring stronger vitality through gene recombination. This study used Catalpa bungei (Q), Catalpa fargesii f. duclouxi (D), and Catalpa fargesii (H) for artificial hybridization, with a natural C. fargesii f. duclouxi hybrid population as control. Mating types were DZ (D×D), HD (H×D), HQ (H×Q), QD (Q×D), and QQ (Q×Q). Annual growth and wood properties were analyzed to evaluate suitability for central China's low mountain hills and elucidate growth advantages. Results indicate: 1) Survival rates ranked QQ > QD > HQ > DZ > HD. Except 2012 height, mating types showed highly significant ( p < 0.01) differences in H and DBH across years, and significant differences ( p < 0.05) in Pilodyn and modulus of elasticity (MOE). Mating type × block interaction was significant only for 2020 MOE. 2) H and DBH growth trends were similar; QQ and DZ had significantly larger increments. QQ showed the smallest Pilodyn (24.5 mm, highest density) and largest MOE (6.5 GPa). 3) Height and DBH (2012, 2016, 2020) showed significant ( p < 0.05) or highly significant ( p QD (1.95) > DZ (1.85) > HD (1.80) > HQ (1.64), with QQ highest. Findings confirm QQ ( C. bungei × C. bungei ) is optimally suited for central China low mountain hills, providing support for Catalpa genetic improvement and economic utilization. Catalpa Mating types Growth Wood properties Comprehensive evaluation method Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 21 Jan, 2026 Read the published version in New Forests → Version 1 posted Editorial decision: Accepted 18 Dec, 2025 Reviews received at journal 15 Dec, 2025 Reviews received at journal 10 Dec, 2025 Reviewers agreed at journal 10 Dec, 2025 Reviewers agreed at journal 08 Dec, 2025 Reviewers agreed at journal 07 Dec, 2025 Reviewers invited by journal 14 Nov, 2025 Editor assigned by journal 27 Aug, 2025 Submission checks completed at journal 27 Aug, 2025 First submitted to journal 26 Aug, 2025 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. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7464399","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":549974794,"identity":"501ee1c4-5b2c-4c37-9873-32270722f9bf","order_by":0,"name":"Feng Li","email":"","orcid":"","institution":"Guizhou University","correspondingAuthor":false,"prefix":"","firstName":"Feng","middleName":"","lastName":"Li","suffix":""},{"id":549974795,"identity":"3486e564-8771-4a24-b4c4-44c1e09c8274","order_by":1,"name":"Wenjun 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Combinations","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"new-forests","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"nefo","sideBox":"Learn more about [New Forests](http://link.springer.com/journal/11056)","snPcode":"11056","submissionUrl":"https://submission.nature.com/new-submission/11056/3","title":"New Forests","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"Catalpa, Mating types, Growth, Wood properties, Comprehensive evaluation method","lastPublishedDoi":"10.21203/rs.3.rs-7464399/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7464399/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eHybrid breeding enhances forest genetic improvement by conferring offspring stronger vitality through gene recombination. This study used \u003cem\u003eCatalpa bungei\u003c/em\u003e(Q), \u003cem\u003eCatalpa fargesii\u003c/em\u003e f. \u003cem\u003educlouxi\u003c/em\u003e(D), and \u003cem\u003eCatalpa fargesii\u003c/em\u003e(H) for artificial hybridization, with a natural \u003cem\u003eC. fargesii\u003c/em\u003e f. \u003cem\u003educlouxi\u003c/em\u003e hybrid population as control. Mating types were DZ (D×D), HD (H×D), HQ (H×Q), QD (Q×D), and QQ (Q×Q). Annual growth and wood properties were analyzed to evaluate suitability for central China's low mountain hills and elucidate growth advantages. Results indicate: 1) Survival rates ranked QQ \u0026gt; QD \u0026gt; HQ \u0026gt; DZ \u0026gt; HD. Except 2012 height, mating types showed highly significant (\u003cem\u003ep\u003c/em\u003e \u0026lt; 0.01) differences in H and DBH across years, and significant differences (\u003cem\u003ep\u003c/em\u003e \u0026lt; 0.05) in Pilodyn and modulus of elasticity (MOE). Mating type × block interaction was significant only for 2020 MOE. 2) H and DBH growth trends were similar; QQ and DZ had significantly larger increments. QQ showed the smallest Pilodyn (24.5 mm, highest density) and largest MOE (6.5 GPa). 3) Height and DBH (2012, 2016, 2020) showed significant (\u003cem\u003ep\u003c/em\u003e \u0026lt; 0.05) or highly significant (\u003cem\u003ep\u003c/em\u003e \u0026lt; 0.01) correlations, strongest between 2016–2020. DBH correlated negatively with Pilodyn and positively with MOE. 4) Comprehensive Qi values ranked QQ (1.97) \u0026gt; QD (1.95) \u0026gt; DZ (1.85) \u0026gt; HD (1.80) \u0026gt; HQ (1.64), with QQ highest. Findings confirm QQ (\u003cem\u003eC. bungei\u003c/em\u003e × \u003cem\u003eC. bungei\u003c/em\u003e) is optimally suited for central China low mountain hills, providing support for \u003cem\u003eCatalpa\u003c/em\u003e genetic improvement and economic utilization.\u003c/p\u003e","manuscriptTitle":"Comprehensive Evaluation of Hybrid Progeny of Catalpa Tree Species and Selection of Superior Hybrid Combinations","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-11-25 23:20:37","doi":"10.21203/rs.3.rs-7464399/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Accepted","date":"2025-12-18T21:10:15+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-12-15T14:14:34+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-12-10T15:14:39+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"50674822800325654137563882742003926772","date":"2025-12-10T13:11:26+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"180036395728290254800499642380547561689","date":"2025-12-08T18:28:55+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"7215372046945719189473453768702070514","date":"2025-12-08T04:45:20+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-11-14T13:50:27+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-08-27T04:14:59+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2025-08-27T04:13:59+00:00","index":"","fulltext":""},{"type":"submitted","content":"New Forests","date":"2025-08-26T15:15:05+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"new-forests","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"nefo","sideBox":"Learn more about [New Forests](http://link.springer.com/journal/11056)","snPcode":"11056","submissionUrl":"https://submission.nature.com/new-submission/11056/3","title":"New Forests","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"d2658038-0390-43cd-8714-09a4b840c207","owner":[],"postedDate":"November 25th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[],"tags":[],"updatedAt":"2026-01-26T16:03:57+00:00","versionOfRecord":{"articleIdentity":"rs-7464399","link":"https://doi.org/10.1007/s11056-025-10157-y","journal":{"identity":"new-forests","isVorOnly":false,"title":"New Forests"},"publishedOn":"2026-01-21 15:58:50","publishedOnDateReadable":"January 21st, 2026"},"versionCreatedAt":"2025-11-25 23:20:37","video":"","vorDoi":"10.1007/s11056-025-10157-y","vorDoiUrl":"https://doi.org/10.1007/s11056-025-10157-y","workflowStages":[]},"version":"v1","identity":"rs-7464399","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7464399","identity":"rs-7464399","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}