寒地粳型两系不育系种质资源的创制及其利用

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中图分类号：S511文献标志码：A

文章编号：1673-6737（2026）01-0001-07

Abstract： Molecularmarker-asistedselection （MAS）wasutilized tocreateearly-maturing Japonica Thermo-sensitive Genic MaleSterile（TGMS）linegermplasmresourceswithhighstigmaexertionrates，filing thedomesticgapforearly-maturing JaponicaTGMSlinessuitableforhigh-latituderegions.Buildingonthepremiseofstableyield，theobjectivewasto leverageheterosis tocultivatehigh-qualityand functional Indica-Japonica hybridricecombinationswithsuperiorgrain qualityandstrongstressresistance.ThisstudyfocusedonKendao-217S，anewlydevelopedsmallgrainJaponica TGMS linebredbytheRiceResearch Instiuteof HeilongjiangAcademyofAgricultural Reclamation SciencesusingMAS technology.Analyseswereconductedonitssterlity，mainagronomictraits，andthefieldpeformanceandqualityofits derivedhigh-qualityhybridcombinations.Theresultsshowthattheindica-typesmall-grainedtwo-linesterileline Kendao-217S containing the tms5 sterility gene has a pollen sterility rate of 99.8% ina greenhouse with an average daily temperature above . Its1000-grain weight is only14.5 g，the number of grains per panicle reaches 178，and the plantheightisabout68cm.Thehybridcombinationproducedbycrossing thissterilelinewith Kenxiangdao-08169 achievedtheNationalGrade2ricequalitystandardintestsconductedbytheMinistryofAgricultureandRuralffairs' CerealandProduct QualitySupervisionandTesting Center （Harbin）.Furthermore，thehybridcombinationderived from crossing thissterilelinewiththelowglutelinlineKendao-23617producedricegrainswithproteincontentlowerthathat of the control variety Longgeng-21.

Key Words：Small-grain Japonica TGMS line;Molecular marker-asisted selection （MAS）; Germplasm resources

水稻是我国重要的粮食作物，在稳定国家安全和发展的方面起到重要的作用。（剩余8782字）