6个铁线莲品种杂交F1代表型性状遗传分析  

Genetic analysis of phenotypic traits in F1 hybrids of 6 Clematis cultivars

作　　者：陈晓蕾 邵伟丽[1] 厉思源 刘志高[2] 马红玲 申亚梅[2] 董彬 张超[2] CHEN Xiaolei;SHAO Weili;LI Siyuan;LIU Zhigao;MA Hongling;SHEN Yamei;DONG Bin;ZHANG Chao(College of Landscape and Architecture,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China;Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants,Zhejiang A&F University,Hangzhou 311300,Zhejiang,China)

机构地区：[1]浙江农林大学风景园林与建筑学院,浙江杭州311300 [2]浙江农林大学浙江省园林植物种质创新与利用重点实验室,浙江杭州311300

出　　处：《浙江农林大学学报》2023年第1期72-80,共9页Journal of Zhejiang A&F University

基　　金：浙江省农业新品种重大专项花卉育种专项(2021C02071-6-4);浙江农林大学创新训练项目(2021KX0057);浙江省园林植物种质创新与利用重点实验室开放基金项目。

摘　　要：【目的】分析对比铁线莲Clematis杂交亲本与杂交一代(F1)之间表型性状的差异,探究铁线莲杂交的遗传变异规律。【方法】以6个铁线莲品种为亲本,开展了4个杂交组合试验,对F1代的表型性状进行统计分析。【结果】①F1代的花期与双亲相比出现分离,但多介于亲本之间。②F1代花色发生广泛分离,紫罗兰色的遗传力高于红紫色以及复色紫罗兰色和紫色,白色相对于红紫色为相对隐性性状;F1代的花药颜色未发生分离,黄色花药对于粉红色和红色花药为相对显性性状。③F1代的萼片宽度、叶片长度、叶片宽度表现出超亲性状,总平均值分别为中亲值的111%、114%和119%;F1代的花梗长度、花直径、萼片长宽比及叶片长宽比均小于双亲,后代总平均值分别为中亲值的85%、89%、91%和82%;F1代的萼片长度和节间距变化不明显,总平均值分别为中亲值的98%和102%。④花部5个数量性状和叶片4个数量性状之间存在显著相关性(P<0.05),其中叶片长度与叶片宽度呈极显著正相关(P<0.01),且相关系数最高为0.940,趋于连锁遗传。【结论】F1代的大部分表型性状(除花药颜色外)都发生了变异,仅有萼片长度和节间距表现出偏母性遗传的特点,萼片宽度表现为偏父性遗传,花期、花色、花药颜色、花梗长度、花直径、萼片长宽比、叶片长度、叶片宽度、叶片长宽比等9个性状未表现出明显的遗传倾向。[Objective]This study,with an analytical comparison of the phenotypic traits between cross parents and F1 generation of Clematis,is aimed to explore the genetic variation of Clematis.[Method]Four cross combination experiments were conducted to statistically analyze the phenotypic traits of F1 generation with six Clematis cultivars as parents.[Result](1)Compared with those of the parents,the flowering stage of F1 generation was separated,but mostly between the parents.(2)There is a general color separation within the F1 generation with the heritability of violet higher than that of red purple,and that of violet and purple more recessive than that of red purple whereas the anther color of F1 generation was not separated with yellow anther relatively dominant to pink and red anther.(3)The sepal width,leaf length and leaf width of F1 generation showed superparental traits,with the total mean values being 111%,114%and 119%of the median parental values respectively;the pedicel length,flower diameter,sepal aspect ratio and leaf aspect ratio of F1 generation were lower than those of both parents,with the total average values of the offspring being 85%,89%,91%and 82%of the median parental values while the sepal length and segment spacing of F1 generation did not change significantly,with the total mean values being 98%and 102%of the median parental value respectively.(4)There were significant correlations(P<0.05)between five quantitative traits in flower and four quantitative traits in leaf,and leaf length was positively correlated(P<0.01)with leaf width,with the highest correlation coefficient of 0.940,which tended to be linked inheritance.[Conclusion]Most of the phenotypic traits(except anther color)in the offspring generation changed,with only sepal length and segment spacing showing maternal inheritance.On the hand,sepal width showed paternal inheritance,while nine traits,including flowering stage,flower color,anther color,pedicel length,flower diameter,sepal aspect ratio,leaf length,leaf width,and leaf aspect ratio,s

关 键 词：铁线莲 杂交育种 表型性状 遗传变异 

分 类 号：S722.3[农业科学—林木遗传育种]