Article(id=1305136320695792610, tenantId=1146029695717560320, journalId=1303687221787852879, issueId=1305136200847740945, articleNumber=null, orderNo=null, doi=10.7606/j.issn.1009-1041.2026.05.06, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1762790400000, receivedDateStr=2025-11-11, revisedDate=1773244800000, revisedDateStr=2026-03-12, acceptedDate=null, acceptedDateStr=null, onlineDate=1789098347113, onlineDateStr=2026-09-11, pubDate=1778774400000, pubDateStr=2026-05-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789098347113, onlineIssueDateStr=2026-09-11, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789098347113, creator=13701087609, updateTime=1789098347113, updator=13701087609, issue=Issue{id=1305136200847740945, tenantId=1146029695717560320, journalId=1303687221787852879, year='2026', volume='46', issue='5', pageStart='F2', pageEnd='706', issueExtLink='null', onlineDate='null', pubDate='1778774400000', pubDateStr='2026-05-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789098318540, creator='13701087609', updateTime=1789103109806, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1305156296924222402, tenantId=1146029695717560320, journalId=1303687221787852879, issueId=1305136200847740945, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1305156296924222403, tenantId=1146029695717560320, journalId=1303687221787852879, issueId=1305136200847740945, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=613, endPage=622, ext={EN=ArticleExt(id=1305136321605956579, articleId=1305136320695792610, tenantId=1146029695717560320, journalId=1303687221787852879, language=EN, title=Study on Photosynthetic Characteristics of Two-Line Hybrid Wheat and Analysis of Heterosis, columnId=1305133119129023428, journalTitle=Journal of Triticeae Crops, columnName=Genetics & Breeding, runingTitle=null, highlight=null, articleAbstract=

To explore the photosynthetic characteristics and hybrid vigor of different two-line hybrid wheat combinations and their parental lines, this study utilized four wheat photo-thermal sensitive male sterile lines, four restoring lines, and the corresponding sixteen hybrid wheat combinations, along with a conventional wheat variety Zhongmai 175, as research materials. Under field planting conditions, we measured various photosynthetic parameters of wheat leaves, including net photosynthetic rate (P_n), transpiration rate (T_r), stomatal conductance (G_s), intercellular CO₂ concentration (C_i), and chlorophyll fluorescence parameters (F_v/F_m). We also investigated agronomic traits at maturity and analyzed the hybrid vigor and correlations between the photosynthetic characteristics and agronomic traits of hybrid wheat. The results indicated that there were significant differences in T_r and C_i among the male sterile lines, restoring lines, hybrid combinations, and the control, while differences in P_n, G_s, and F_v/F_m were not significant. The trends in photosynthetic characteristics of the male sterile lines and hybrid combinations were relatively similar from the booting stage to 20 days post-anthesis, with the highest values of P_n, T_r, G_s, and C_i observed at the heading stage for the male sterile lines, restoring lines, and hybrid combinations. The proportion of super-parental hybrid vigor combinations for photosynthetic characteristics ranged from 56.25% to 93.75%, with super-high parental vigor combinations ranging from 31.25% to 81.25%, and super-control vigor combinations from 12.50% to 93.75%, with T_r and G_s showing the most significant super-high parental and super-control advantages. For agronomic traits, the proportion of super-parental hybrid vigor combinations ranged from 50.00% to 100.00%; that of super-high parental vigor combinations and super-control vigor combinations ranged from 18.75% to 75.00%, and from 18.75% to 100.00%, respectively, with the spikes number per square meter and yield exhibiting the most significant super-high parental and super-control advantages. There was a highly significantly positive correlation between G_s and C_i in hybrid wheat, and a significantly positive correlation between P_n and G_s. Hybrid wheat showed a significantly negative correlation with T_r, G_s, and C_i of restoring lines, as well as a significantly negative correlation with T_r, G_s, and F_v/F_m of mid-parent values. Additionally, significantly positive correlations were found between ear length and flag leaf area, number of grains per ear and flag leaf area, number of grains per ear and ear length, yield, and thousand-grain weight. P_n, G_s, and C_i of hybrid wheat were significantly positively correlated with thousand-grain weight, while G_s and C_i were significantly positively correlated with yield; T_r was significantly positively correlated with flag leaf area, and F_v/F_m was significantly negatively correlated with ear length. These findings demonstrate that the photosynthetic characteristics and agronomic traits of two-line hybrid wheat exhibited significant hybrid vigor, and some photosynthetic parameters are positively correlated with yield traits, which can be used to guide the breeding of high-yielding and high-photosynthetic efficiency hybrid wheat combinations.

, authors=Hui SUN, Qiling HOU, Shaohua YUAN, Jieru YUE, Xiaocong HAO, Jinsai CHEN, Xiucheng BAI, Zhilie QIN, Fengting ZHANG, authorsList=Hui SUN, Qiling HOU, Shaohua YUAN, Jieru YUE, Xiaocong HAO, Jinsai CHEN, Xiucheng BAI, Zhilie QIN, Fengting ZHANG, authorCompany=null, correspAuthors=Zhilie QIN, Fengting ZHANG, 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=1305136322662921188, articleId=1305136320695792610, tenantId=1146029695717560320, journalId=1303687221787852879, language=CN, title=二系杂交小麦光合特性研究及杂种优势分析, columnId=1305133119284212678, journalTitle=麦类作物学报, columnName=遗传育种, runingTitle=null, highlight=null, articleAbstract=

为了探索不同二系杂交小麦组合及其亲本光合特性与杂种优势表现，以4个小麦光温敏不育系、4个恢复系及其对应的16个杂交小麦组合和常规小麦品种中麦175（对照）为研究材料，在大田种植条件下测定小麦叶片的净光合速率（P_n）、蒸腾速率（T_r）、气孔导度（G_s）、胞间CO₂浓度（C_i）、叶绿素荧光参数（F_v/F_m）等光合特性指标，调查成熟期农艺性状，分析杂交小麦光合特性、农艺性状的杂种优势和相关性。结果表明，不育系、恢复系、杂交组合和对照间T_r和C_i存在极显著差异，P_n、G_s和F_v/F_m差异不显著。不育系和杂交组合光合特性从孕穗到花后20 d的变化趋势比较接近，不育系、恢复系、杂交组合的P_n、T_r、G_s和C_i均在抽穗期出现最高值。光合特性超中亲优势组合比例为56.25%~93.75%，超高亲优势组合比例为31.25%~81.25%，超对照优势组合比例为12.50%~93.75%，T_r和G_s超高亲和超对照优势最显著。农艺性状超中亲优势组合比例为50.00%~100.00%，超高亲优势组合比例为18.75%~75.00%，超对照优势组合比例为18.75%~100.00%，每平方米穗数和产量超高亲和超对照优势最显著。杂交小麦G_s与C_i呈极显著正相关，P_n与G_s呈显著正相关；杂交小麦与恢复系T_r 、G_s和C_i呈显著负相关，与中亲值T_r、G_s和F_v/F_m呈显著负相关；杂交小麦穗长与旗叶面积、穗粒数与旗叶面积、穗粒数与穗长、产量与千粒重均呈显著正相关；杂交小麦P_n、G_s和C_i与千粒重呈显著正相关，G_s和C_i与产量呈显著正相关，T_r与旗叶面积呈显著正相关，F_v/F_m与穗长呈极显著负相关。由此说明，二系杂交小麦光合特性和农艺性状均表现出显著的杂种优势，部分光合特性指标与产量性状呈正相关，可用于指导高产高光效杂交小麦组合的选育。

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E-mail: sunhui802@163.com（孙辉）

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E-mail: sunhui802@163.com（孙辉）

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