库尔勒香梨部分果实性状遗传的研究.PDFVIP

中国农学通报 2011,27(25): 173-177 Chinese Agricultural Science Bulletin 库尔勒香梨部分果实性状遗传的研究 郭黄萍，杨 盛，张晓伟 （山西省农科院果树研究所，山西太谷030815） 摘 要：库尔勒香梨是中国久负盛名的梨果佳品。却存在着果个小、果心大的缺陷。为了传承香梨品质 优势，克服其弱点，本课题组于1971年开始香梨为亲本的杂交育种工作。以6 个梨的杂交组合、351 株 实生树为试材，进行了各组合亲本和后代的性状分析，探讨了各主要性状的遗传趋势。结果表明，杂交 后代果实形状、肉质遗传倾向于亲本，倾亲率分别为68.09%和51.38%。梨果实大小为数量性状，杂种后 代果个分离广泛，杂种后代果实普遍变小，各组合的遗传传递力在68.91%~117.51%之间，平均遗传传递 力为93.11% 。梨果实可溶性固形物含量呈数量性状遗传，杂种后代分离较广，其组合传递力平均为 97.49%。 关键词：香梨；果实性状；遗传倾向 中图分类号：S661.2 文献标志码：A 论文编号：2011-1735 StudyontheInheritanceofSomeFruitCharactersin ‘kuerlexiangli’Pear GuoHuangping,YangSheng,ZhangXiaowei (Pomology Institute, Shanxi Academy of Agricultural Sciences,TaiguShanxi030815) Abstract: Korlapearhasbeenawell-knownvarietyinChinaforalongtime,butithassomedefectssuchas smallfruitsizeandlargecore.Inordertomaintainitsgoodqualityandovercomeitsshortcomings,cross breedingusingKorlapearastheparenthasbeencarriedoutsince 1971. 351 seedlingsof 6 pearcross combinationswereusedforstudyingthetrendsofinheritanceforthemaincharactersofpearfruitbyanalyzing thecharactersoftheparentsandtheirprogenies.Theresultsshowedthattheinheritanceoffruitshapeand flesh texture of the hybrid progenies was mainly trended to their parentage by 68.09% and 51.38% respectively. The fruit size of pear is a quantitative character, and the size of progenies appeared wide segregation.Mostoftheprogenieshaveasmallersizeandtheheritabilityofeachcombinationrangedfrom 68.91%to 117.51%,theaverageofwhichwas 93.11%.Thesolublesolidscontent(SSC)ofpearfruits presented the quantitative character, and the sexual progenies showed wide segregation. The average heritabilityofeachcombinationwas97.49%. Keywords:Xianglipear;fruitcharacters;inheritancetendency 0 引言