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1、安徽农业科学,JournalofAnhuiAgri.Sci.2007,35(16):4731-4732,4741责任编辑陈娟责任校对胡先祥微胚乳超高油玉米籽粒β-谷甾醇含量的研究112时显芸,吴子恺,黄岛平(1.广西大学农学院,广西南宁530005;2.广西分析测试研究中心,广西南宁530022)摘要2005年秋季种植不同类型的玉米材料,研究其籽粒β-谷甾醇含量,发现微胚乳超高油玉米的β-谷甾醇含量远高于其他类型玉米,微胚乳玉米III型杂种优势较显著;2006年春季选取微胚乳超高油玉米III型的杂交组合及其亲本做试验材料,进
2、行亲子代遗传研究,结果表明,正交F1与反交F1之间的β-谷甾醇含量比较接近,无明显差异。同型系之间β-谷甾醇含量差异为420～1400mg/kg;相同株系之间β-谷甾醇含量差异为140～190mg/kg,相对较小。将2季种植的6个微胚乳组合作亲子相关分析,结果发现F1与双亲平均值相关系数r=0.6439,F1与母本的相关系数r=0.6826,F1与父本的相关系数r=0.3194,均呈明显正相关趋势,但均未达显著水平(P>0.05)。关键词玉米;微胚乳;超高油;β-谷甾醇;遗传中图分类号S513文献标识码A文章编号0517-6
3、611(2007)16-04731-02ResearchonContentsofβ-SitosterolinSuperHighOilSeedsofMicro-endospermCornSHIXian-yunetal(AgriculturalCollege,GuangxiUniversity,Nanning,Guangxi530005)AbstractToanalyzethecontentsofβ-sitosterolofcornseeds,severaltypesofcornwereplantedintheFallof200
4、5.Theresultsshowedthatthecon-tentsofβ-sitosterolinthesuperhighoilseedofmicro-endospermcorn(MEC)weremuchhigherthanthatinothertypeofcorns.TheheterosisoftypeIIIofMECwasdominant.Toanalyzetheheredityofβ-sitosterolinthesuperhighoilseedsofMEC,thehybridseedsoftypeIIIofMECa
5、ndtheirparentswereplantedinthespringof2006.Theresultsshowedthatthecontentsofβ-sitosterolinnormalhybridF1seedswerenotsignificantdifferentwiththatinreversehybridF1seeds.Thecontentsofβ-sitosterolweredispersedfrom420mg/kgto1400mg/gseedsbetweendifferentcombinationsinthe
6、sametypeofcornanddispersedfrom140mg/kgto190mg/kgseedsinthesameplantlines.Buttheheterosisofβ-sitosterolcontentswasdifferentbetweendifferentcombinationsofhybridF1seeds.Analysisofparent-offspringcorrelationwasperformedinthe6combinationhybridF1seedsofMECwhichplantedint
7、woseasons.TheresultsshowedthattherewasapositivecorrelationbetweenhybridF1andmeanofparents(r=0.6439),fatherplants(r=0.3194),andmotherplants(r=0.6826),respectively.Butnocorrelationratereachedatsignificantdifferentlevel(P>0.05).KeywordsCorn;Micro-endospermcorn(MEC);Su
8、perhighoil;β-sitosterol;Heredity微胚乳超高油玉米是广西大学农学院吴子恺教授选育农学院吴子恺教授提供。而成的具有自主知识产权的超高油油料玉米新种质。微胚1.2试验设计2005年8月,在广西大学农学院试验农场乳超高油玉米的胚乳含量极低,成熟种子的胚/籽粒干重≥分
