广西香稻育种现状及发展策略

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1、广西香稻育种现状及发展策略陈传华李虎刘广林胨远孟罗群昌广西农业科学院水稻研宄所/国家水稻改良中心南宁分中心摘要：对21世纪以来广西香稻品种的审定情况及广西自育香稻品种的产量、品质以及抗性等进行统计分析，探明了广西香稻的育种现状及存在问题，如广西通过审定的香稻品种中自育品种较少，且多为常规稻品种；自育香稻品种的优质达标率较低，主要原因是直链淀粉含量偏低；自育香稻品种株高适中，多为大粒型品种，后期育成品种产量有所提高，主要通过育成大穗型品种来实现；自育香稻品种稻瘟病抗性整体较差，內叶枯病前期抗性表现较好、后期出现退步等。今后应加强香稻品种的选育力度，特别是杂交香稻品种的选

2、育力度;加快香稻品种鉴定技术的研宄和利用，为香稻品种的审定提供技术支撑;加强中等偏低直链淀粉含量香稻品种的选育，以市场需求为导向，制定广丙优质稻米相关地方标准，特别注重直链淀粉含量标准的调整;把提高稻瘟病抗性作为香稻品种选育过程中的重点工作A容等。关键词：香稻;产量;品质;直链淀粉含量;抗性;发展策略;收稿日期：2017-08-12基金：广西科技计划项目（桂科AB16380044）BreedingStatusandDevelopmentStrategyofFragrantRiceinGuangxiProvinceCHENChuanhuaLIHuLIUGuanglinC

3、HENYuanmengLUOQunchangRiceResearchInstitute，GuangxiAcademyofAgriculturalSciences/NanningSub-centeroftheNationalCenterforRiceImprovement;Abstract：InordertofindthepresentsituationandexistingproblemsoffragrantricebreedinginGuangxiProvince,theyield,qualityandresistanceofthefragrantricevarie

4、tieswhichwerebredinGuangxiProvincesince2000to2016wereanalyzed.TheresultshowedthatthereweresmallnumberoffragrantricevarietiesbredbyGuangxiProvince,andthesevarietieswerealmostconventionalvarieties.ThehighqualityrateoffragrantricevarietieswaslowinGuangxiProvince,mainlybecauseofthelowamylos

5、econtent.Theyieldsoflatelybredricewerehigherthanearlyones,whichweremainlythroughthebreedingoflargepaniclevarieties.Mostofthesefragrantricevarietieshadpoorresistancetoriceblast,thebacterialblightresistanceofearlyricewerestrongerthanlatelyrice.Fromnowon,weshouldstrengthenthebreedingabilit

6、yoffragrantricevarieties,especiallythebreedingabilityofhybridricevarieties,andcoordinatethequalityindexesofricevarieties;acceleratetheresearchandutilizationofidentificationtechnologyoffragrantricevarieties;strengthentheselectionandbreedingoffragrantricevarietieswithmedium-]owamylosecont

7、ent,establishthelocalstandardsrelatedtohighqualityriceespeciallyfortheamylosecontentaccordingtomarketdemandinGuangxiProvince;improvetheresistancetoriceblastandsoon.Keyword：fragrancerice;yield;grainquality;amylosecontent;diseaseresistance;developmentstrategy;Received：2017-08-12香