Article(id=1277253978320667644, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1277253949203809194, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1000-2561.2026.01.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1756396800000, receivedDateStr=2025-08-29, revisedDate=null, revisedDateStr=null, acceptedDate=1760716800000, acceptedDateStr=2025-10-18, onlineDate=1782450678663, onlineDateStr=2026-06-26, pubDate=1769270400000, pubDateStr=2026-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1782450678663, onlineIssueDateStr=2026-06-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1782450678663, creator=13701087609, updateTime=1782450678663, updator=13701087609, issue=Issue{id=1277253949203809194, tenantId=1146029695717560320, journalId=1235980609244409860, year='2026', volume='47', issue='1', pageStart='1', pageEnd='280', issueExtLink='null', onlineDate='null', pubDate='1769270400000', pubDateStr='2026-01-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1782450671721, creator='13701087609', updateTime=1782451647086, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1277258041263256431, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1277253949203809194, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1277258041263256432, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1277253949203809194, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=86, endPage=95, ext={EN=ArticleExt(id=1277253980661089280, articleId=1277253978320667644, tenantId=1146029695717560320, journalId=1235980609244409860, language=EN, title=Response Characteristics of Different Saccharum officinarum L. Genotypes to Low-phosphorus Stress, columnId=1277253980237464574, journalTitle=Chinese Journal of Tropical Crops, columnName=Special Topics on Efficient Breeding and Green Cultivation of Sugarcane, runingTitle=null, highlight=null, articleAbstract=

Sugarcane is a globally important cash crop and bioenergy crop, playing a critical role in promoting economic development in sugarcane-producing countries. Phosphorus is an essential nutrient for plants, and low phosphorus availability in soil often constrains the quality and yield of sugarcane in China. S. officinarum serves as an important genetic foundation for modern sugarcane varieties. Elucidating the low-phosphorus tolerance mechanisms in phosphorus-efficient genotypes of S. officinarum is of significant theoretical and practical importance for screening and breeding phosphorus-efficient sugarcane varieties, improving phosphorus fertilizer utilization efficiency, and promoting the development of the sugarcane industry. The study was aimed to explore the response characteristics of different S. officinarum genotypes under low-phosphorus stress from the perspectives of root morphology and physiological adaptations, identify key factors affecting phosphorus absorption, and provide a theoretical basis for improving nutrient utilization efficiency in sugarcane through root plasticity modification. Phosphorus-efficient S. officinarum genotypes (48 Mouna and Loether) and phosphorus-inefficient genotypes (NC20 and Badila) were used in the study. Under two phosphorus supply conditions, low phosphorus (0.2 μmol/L KH₂PO₄) and normal phosphorus (1000 μmol/L KH₂PO₄), comparative analyses were conducted on root morphological indices, low-phosphorus tolerance indices, root activity, acid phosphatase activity, and other physiological characteristics of each variety. The results indicated that low-phosphorus stress could inhibit the growth and development of various sugarcane tropical varieties to different degrees. Among them, the phosphorus-efficient variety Loether was the least affected by low-phosphorus stress in terms of plant height, stem dry weight, and whole-plant biomass, while its root dry weight and root-to-shoot ratio significantly increased. Low-phosphorus stress promoted increases in total root length, total root surface area, and total root volume in both Loether and 48 Mouna, with Loether exhibiting the most pronounced increase. The specific root length, specific root surface area, and specific root volume of most varieties decreased, with NC20 showing the greatest reduction. Additionally, all varieties exhibited root thinning. Furthermore, under low-phosphorus stress, 48 Mouna and Loether demonstrated higher root low-phosphorus tolerance indices, root activity, and phosphorus acquisition capacity. In conclusion, this study reveals that the phosphorus-efficient tropical varieties 48 Mouna and Loether can better optimize root architecture, enhance phosphorus absorption interfaces, maintain strong root activity and enzymatic adaptability, effectively improve phosphorus absorption and utilization efficiency, and exhibit strong adaptability to low-phosphorus stress.

, authors=null, authorsList=Xibing RAO, Lihua YANG, Jingmei DAO, Siqi TANG, Caiyan WEI, Liping ZHAO, authorCompany=null, correspAuthors=Liping ZHAO, 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=1277253982389141506, articleId=1277253978320667644, tenantId=1146029695717560320, journalId=1235980609244409860, language=CN, title=甘蔗热带种不同基因型对低磷胁迫的响应特征, columnId=1277253981076324352, journalTitle=热带作物学报, columnName=甘蔗高效育种和绿色栽培专题, runingTitle=null, highlight=null, articleAbstract=

从根系形态及生理适应性角度，探究不同基因型甘蔗热带种（Saccharum officinarum L.）对低磷胁迫的响应特征，识别影响磷吸收的关键因素，为通过根系塑性改良提高甘蔗养分利用效率提供理论依据。本研究以磷高效型热带种48 Mouna、Loether和磷低效型热带种NC20、Badila为研究材料，在低磷（0.2 μmol/L KH₂PO₄）和正常磷（1000 μmol/L KH₂PO₄）2种供磷水平下，比较分析各品种的根系形态指标、耐低磷指数、根系活力及酸性磷酸酶活性等。结果表明，低磷胁迫不同程度地抑制了各甘蔗热带种的生长发育。其中，磷高效品种Loether的株高、茎干质量及整株生物量受低磷胁迫影响最小，且根干质量和根冠比显著增加。低磷胁迫促使Loether和48 Mouna的总根长、根系总表面积、根系总体积均增加，且Loether的增加幅度最为明显。绝大多数品种的比根长、比根表面积和比根体积均降低，其中NC20降低幅度最大，同时所有品种根系均出现细化。此外，48 Mouna和Loether在低磷胁迫下表现出更高的根部耐低磷指数、根系活力及获磷能力。以上研究揭示了磷高效型热带种48 Mouna与Loether能通过优化根系结构、增强磷吸收界面、维持较强根系活力及酶促适应性，有效提升磷的吸收利用效率，表现出较强的低磷胁迫适应能力。

, authors=, authorsList=饶席兵, 杨丽华, 刀静梅, 唐思琪, 韦彩艳, 赵丽萍, authorCompany=null, correspAuthors=赵丽萍, authorNote=null, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=yHTyPqJ2ema/4SO3Ky/IQQ==, magXml=IWXbLnfxt2xJV+33u6Edlg==, pdfUrl=null, pdf=LghGJ/XTubjp20E0j2TTNw==, pdfFileSize=1152686, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=GcUbzrG59ptG4+h2y7mGsQ==, mapNumber=null, fund=null)}, authors=[Author(id=1277253985325154324, tenantId=1146029695717560320, journalId=1235980609244409860, articleId=1277253978320667644, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1277253985698447383, tenantId=1146029695717560320, journalId=1235980609244409860, articleId=1277253978320667644, authorId=1277253985325154324, language=EN, stringName=Xibing RAO, firstName=Xibing, middleName=null, lastName=RAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2}, address=^1.National Key Laboratory of Tropical Crops Biological Breeding, Kunming, Yunnan 650205, China
^2.Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences / Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan, Yunnan 661699, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1277253986109489176, tenantId=1146029695717560320, journalId=1235980609244409860, articleId=1277253978320667644, authorId=1277253985325154324, language=CN, stringName=饶席兵, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2}, address=^1.热带作物生物育种全国重点实验室，云南昆明　650205
^2.云南省农业科学院甘蔗研究所/云南省甘蔗遗传改良重点实验室，云南开远　661699, bio={"content":"

饶席兵（1997—），男，硕士，研究实习员，研究方向：甘蔗遗传育种。

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饶席兵（1997—），男，硕士，研究实习员，研究方向：甘蔗遗传育种。

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