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《3个香榧单株的种实性状变异分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第33卷第1期中国野生植物资源Vo1.33No.12014年2月ChinesePlantResourcesFeb.2014doi:10.3969/j.issn.1006—9690.2014.01.0063个香榧单株的种实性状变异分析邬玉芬一,于勇杰,王洪,倪穗(1.宁波大学海洋学院,浙江宁波315211;2.宁海县林特科技推广总站,浙江宁海315600)摘要对浙江宁海3个香榧单株种实种长、种径、种长径比(种形系数)、单种重、鲜出核率、核长、核径、核长径比(核形指数)、单核重9个性状指标进行了测定和统计分析,为香榧优株选育提供理论依据。结果表明:单种重平均值最大
2、的是宁榧l号(9.17g),单种重极大值出现在宁榧1号(13.6g);单核重平均值最大的为宁榧1号(2.93g)。平均鲜出核率最大的是宁榧3号,达到40.86%,鲜出核率极大值出现在宁榧2号(51.06%)。株间种长、种径、种长径比、核长、核长径比、单种重、单核重、鲜出核率指标均存在显著差异,而核径差异性不显著。种实性状变异幅度最大的指标为单核重(变异系数CV为22.68%),单种重(变异系数CV为21.18%)次之,最小的为种长径比(变异系数CV为4.49%)。种长、种径、核长、核径均与单种重和单核重有显著相关性,鲜出核率与种长、种径、单种重、呈极显著负相关
3、,与种长径比呈极显著正相关。关键词香榧;种实;种核;性状;变异分析中图分类号:$664.5文献标识码:A文章编号:1006—9690(2014)01—0020—04VariationandCorrelativityAnalysisofFruitCharacteristicsinThreeDiferentGroupsofTorreyagrandisCV.WuYtifen,YuYongjie,WangHong,NiSui(1.SchoolofMarineScience,NingboUniversity,Ningbo315211,China;2.ExtensionC
4、enterforForest—ryScienceandTechnology,Ninghai315600,China)AbstractAnalysiswasmadeonfruitcharacteristics(seedlength,seeddiameter,seed1ength/diameter,nutlength,nutdiameter,nutlength/diameter,seedweight,nutweight,andnucleationrate)inthreedifferentgroupsofTorreyagrandisev.fromNinghai,Zh
5、ejiangprovince.ThisresearchmayprovidethetheoreticalbasisforthebreedingofsuperiorvarietiesofTorreyagrandisCV.Theresultshowthat:themaximalaverageseedweightappearedinNingfeiNumber1(9.17g),ThemaximalseedweightappearedinNingfeiNumber1(13.6g);ThemaximalaveragenutweightappearedinNingfeiNum
6、ber1(2.93g).TheaveragemaximumnucleationrateappearedinNingfeiNumber3(40.86%),andNingfeiNumber2hasthethemaximumnucleationrate(51.06%).Therewereextremelysignificantdifferenceamongeachindividualineachareas(seedlength,seeddiameter,seedlength/diameter,nutlength,nutlength/di—ameter,seedwei
7、ght,nutweight,andnucleationrate),expectthenutdiameter.Themaximalvariationcoeficientswasnutweight(CV=22.68%),followedbytheseedweight(CV=21.18%).Theminimalvariationcoeficientswasseed1ength/diameter(CV=4.49%).Theseedweightandnutweighthadsig—nificantcorrelationwithseedlength,seeddiamete
8、r,nutlengthandnutdi
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