Article(id=1277254271905165478, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1277254112370623080, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1000-2561.2026.02.017, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1760284800000, receivedDateStr=2025-10-13, revisedDate=null, revisedDateStr=null, acceptedDate=1763395200000, acceptedDateStr=2025-11-18, onlineDate=1782450748658, onlineDateStr=2026-06-26, pubDate=1771948800000, pubDateStr=2026-02-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1782450748658, onlineIssueDateStr=2026-06-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1782450748658, creator=13701087609, updateTime=1782450748658, updator=13701087609, issue=Issue{id=1277254112370623080, tenantId=1146029695717560320, journalId=1235980609244409860, year='2026', volume='47', issue='2', pageStart='281', pageEnd='551', issueExtLink='null', onlineDate='null', pubDate='1771948800000', pubDateStr='2026-02-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1782450710622, creator='13701087609', updateTime=1782451594955, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1277257821632729830, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1277254112370623080, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1277257821632729831, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1277254112370623080, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=467, endPage=477, ext={EN=ArticleExt(id=1277254273176039593, articleId=1277254271905165478, tenantId=1146029695717560320, journalId=1235980609244409860, language=EN, title=Differences in Carbon Enrichment Efficiency Between C₃ and C₄ Crops Based on ¹³C Pulse Labeling, columnId=1236256434120348225, journalTitle=Chinese Journal of Tropical Crops, columnName=Plant Cultivation, Physiology & Biochemistry, runingTitle=null, highlight=null, articleAbstract=

To investigate the differences in response and labeling efficiency of C₃ and C₄ crops to carbon isotope pulse labeling, this experiment selected C₃ crops (rice and peanut) and C₄ crops (maize and sugarcane) as research subjects. A total of five rounds of ¹³C pulse labeling were conducted in pot experiments to analyze the ¹³C enrichment abundance, fixation amount, and labeling efficiency of the crops, aiming to reveal the differences in carbon fixation and pulse labeling efficiency between C₃ and C₄ crops. The results showed that under labeling treatment, the δ¹³C values and isotope abundance F values of C₃ and C₄ crops showed significant differences, following a consistent pattern: C₃ crops>C₄ crops. The δ¹³C values of the four crop types were as follows: rice (396.90‰-410.05‰)>peanut (269.51‰-364.66‰)>maize (148.15‰-182.47‰)>sugarcane (152.50‰-153.91‰). Under non-labeled treatment, δ¹³C values were as follows: sugarcane (-15.63‰ to -15.16‰)>maize (-18.25‰ to -16.52‰)>rice (-34.53‰ to -33.82‰)=peanut (-35.41‰ to-33.37‰). The ¹³C fixation amount and labeling efficiency showed consistent trends, with no significant differences between C₃ and C₄ crops. Among the four crops, peanut and sugarcane treatments were significantly higher than rice and maize, and peanut was significantly higher than rice. Peanut had the highest labeling efficiency at 46.02%, followed by sugarcane at 33.27%, and rice had the lowest at 24.55%. This study reveals the response differences of C₃ and C₄ crops to ¹³C pulse labeling and provides important data support for the application of stable isotope techniques in crop carbon labeling.

, authors=null, authorsList=Fulin QIN, Pengyu ZHU, Changjiang LI, Changzhen LI, authorCompany=null, correspAuthors=Changzhen LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1277254274404970667, articleId=1277254271905165478, tenantId=1146029695717560320, journalId=1235980609244409860, language=CN, title=基于¹³C脉冲标记的C₃和C₄作物碳富集差异效率, columnId=1236256434313286224, journalTitle=热带作物学报, columnName=作物栽培与生理生化, runingTitle=null, highlight=null, articleAbstract=

为研究C₃和C₄作物对碳同位素脉冲标记的响应差异及其标记效率。本研究选取C₃作物（水稻和花生）和C₄作物（玉米和甘蔗）为试验对象，通过盆栽试验进行5轮¹³C脉冲标记，分析植株¹³C富集丰度、固定量及标记效率，以揭示C₃、C₄作物固碳及脉冲标记效率差异。结果表明：标记处理下，C₃与C₄作物植株的δ¹³C值和同位素丰度（F值）之间均存在显著差异，且规律呈现一致现象，均为C₃作物高于C₄作物，4种作物类型的δ¹³C值表现为：水稻（396.90‰~410.05‰）>花生（269.51‰~364.66‰）>玉米（148.15‰~182.47‰）>甘蔗（152.50‰~153.91‰）；未标记处理下，δ¹³C值表现为甘蔗（-15.63‰~ -15.16‰）>玉米（-18.25‰~ -16.52‰）>水稻（-34.53‰~ -33.82‰）=花生（-35.41‰~ -33.37‰）。¹³C固定量和标记效率表现一致，C₃与C₄作物间均无显著差异，4种作物表现为花生和甘蔗处理显著高于水稻和玉米，花生显著高于水稻处理；花生标记效率最高，为46.02%，其次是甘蔗，为33.27%，水稻标记效率最低，为24.55%。本研究揭示了C₃与C₄作物对¹³C脉冲标记的响应差异，为稳定性同位素技术在作物碳标记中的应用提供重要数据支持。

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秦富林（2001—），男，硕士研究生，研究方向：热带土壤固碳。

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秦富林（2001—），男，硕士研究生，研究方向：热带土壤固碳。

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