Article(id=1309575142431351389, tenantId=1146029695717560320, journalId=1308397196074385509, issueId=1309575113855562513, articleNumber=null, orderNo=null, doi=10.11733/j.issn.1007-0435.2026.09.022, pmid=null, cstr=null, oa=null, hot=0, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1772035200000, receivedDateStr=2026-02-26, revisedDate=1775750400000, revisedDateStr=2026-04-10, acceptedDate=null, acceptedDateStr=null, onlineDate=1790156644685, onlineDateStr=2026-09-23, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790156644685, onlineIssueDateStr=2026-09-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790156644685, creator=13701087609, updateTime=1790156644685, updator=13701087609, issue=Issue{id=1309575113855562513, tenantId=1146029695717560320, journalId=1308397196074385509, year='2026', volume='34', issue='9', pageStart='3141', pageEnd='3524', issueExtLink='null', onlineDate='null', pubDate='1789401600000', pubDateStr='2026-09-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1790156637871, creator='13701087609', updateTime=1790156973247, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1309576520587374966, tenantId=1146029695717560320, journalId=1308397196074385509, issueId=1309575113855562513, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1309576520587374967, tenantId=1146029695717560320, journalId=1308397196074385509, issueId=1309575113855562513, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=3385, endPage=3394, ext={EN=ArticleExt(id=1309575143110828639, articleId=1309575142431351389, tenantId=1146029695717560320, journalId=1308397196074385509, language=EN, title=Cold Tolerance and Production Performance Evaluation of a New Pennisetum purpureum Line ‘Yunmu No.1’ in Different Regions of Yunnan, columnId=null, journalTitle=Acta Agrestia Sinica, columnName=null, runingTitle=null, highlight=null, articleAbstract=Based on multi-year， multi-site field trials combined with physiological and photosynthetic measurements， in this study we evaluated the cold tolerance and production adaptability of a new Pennisetum purpureum line ‘Yunmu No.1’（YM-1）， in comparison with two local predominant cultivars， P. purpureum ‘Dehong’（DH） and P. purpureum ×P. typhoideum ‘Reyan No.4’（RY-4）. The results indicated that the cold tolerance of the tested materials， in descending order， was YM-1>DH>RY-4. YM-1 had the lowest semi-lethal temperature （LT₅₀） of -5.413℃. Under low-temperature stress， its superoxide dismutase （SOD） activity increased significantly by 237.12%， while malondialdehyde （MDA） content increased only marginally by 1.25%， indicating that it primarily responds to low temperature through an antioxidant mechanism. In contrast， DH mainly responded to low temperature by accumulating osmotic adjustment substances， including soluble sugar （+76.77%） and proline （+60.24%）. RY-4 exhibited weak responses in both antioxidant and osmotic adjustment mechanisms， with an MDA increase of 43.07%. The freezing injury index during the first-frost period was consistent with the above physiological ranking. At an altitude of 2350 m， YM-1 showed the highest sprouting rate （50.4%； i.e.， the proportion of stumps with newly sprouted tillers） and regreening rate （43.0%）. Its three-year average hay yield was 6.1% and 11.3% higher than those of DH and RY-4， respectively. In conclusion， ‘Yunmu No.1’ possesses both strong cold tolerance and high and stable yield potential， making it suitable for cultivation in complex environments below 2000 m elevation on the Yunnan Plateau. A comprehensive evaluation method based on LT₅₀， MDA content， SOD activity， field freezing injury phenotype， and natural overwintering capacity can be used for the systematic identification of cold tolerance in Pennisetum purpureum., authors=SHI Dan-dan¹, LI Shi-ping¹, OUYANG Qing^1,2, LIU Yan-pei¹, MEI Jiao², ZHONG Sheng¹, authorsList=SHI Dan-dan, LI Shi-ping, OUYANG Qing, LIU Yan-pei, MEI Jiao, ZHONG Sheng, authorCompany=1 Yunnan Academy of Grassland and Animal Science, Kunming, Yunnan Province 650212, China;
2. Yunnan Agricultural University, Kunming, Yunnan Province 650212, China, correspAuthors=null, 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=1309575142892724830, articleId=1309575142431351389, tenantId=1146029695717560320, journalId=1308397196074385509, language=CN, title=‘云牧1号’象草新品系耐寒性及在云南不同区域的生产性能评价, columnId=1309565024058835950, journalTitle=草地学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=基于多年多点田间试验与生理光合测定，本研究以当地主栽品种‘德宏’（DH）和‘热研4号’（RY-4）象草为对照，系统评估了象草新品系‘云牧1号’（YM-1）的耐寒性与生产适应性。结果表明，参试材料的耐寒性强弱顺序为YM-1>DH>RY-4。YM-1的低温半致死温度（-5.413℃）最低，低温胁迫下超氧化物歧化酶活性显著上升237.12%，丙二醛含量仅微增1.25%，主要以抗氧化机制响应低温；DH则主要通过积累可溶性糖（+76.77%）和脯氨酸（+60.24%）等渗透调节物质响应低温；RY-4抗氧化与渗透调节响应均较弱，丙二醛含量增幅达43.07%。初霜期冻害指数与上述生理指标排序一致。在海拔2350 m条件下，YM-1的萌蔸率（地下芽萌发成新株丛的比例）（50.4%）与返青率（43.0%）均最高，3年平均干草产量比DH和RY-4分别高出6.1%和11.3%。综上，‘云牧1号’兼具耐寒性和高产稳产潜力，适宜在云南高原区2000 m以下复杂环境中推广；基于低温半致死温度、丙二醛含量、超氧化物歧化酶活性、田间冻害表型及自然越冬能力的综合评价方法，可用于象草耐寒性的系统鉴定。, authors=施丹丹¹, 李世平¹, 欧阳青^1,2, 刘彦培¹, 梅娇², 钟声¹, authorsList=施丹丹, 李世平, 欧阳青, 刘彦培, 梅娇, 钟声, authorCompany=1 云南省草地动物科学研究院, 云南 昆明 650212;
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