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梨F1代群体果实性状的遗传分析及相关性研究
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引用本文:赵亚楠,欧春青,王 斐,张艳杰,马 力,姜淑苓.梨F1代群体果实性状的遗传分析及相关性研究[J].西北农业学报,2018,27(12):1811~1818
DOI:10.7606/j.issn.1004-1389.2018.12.014
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作者单位
赵亚楠,欧春青,王 斐,张艳杰,马 力,姜淑苓 (中国农业科学院 果树研究所/农业部园艺作物种质资源利用重点实验室辽宁兴城 125100) 
基金项目:中国农业科学院科技创新工程(CAAS-ASTIP);中央级公益性科研院所基本科研业务费专项(Y2016CG19,1610032012006);国家科技支撑项目(2013D02B00)。
中文摘要:以‘苹果梨’与‘八月红’及其210株F1杂交后代为材料,对其果实大小、果形指数、果心大小、果肉硬度、可溶性固形物质量分数和可滴定酸质量分数等6个性状的遗传倾向进行调查和研究。结果表明:果实大小、果形指数、果心大小和可溶性固形物质量分数4个性状在后代中的遗传符合正态或偏正态分布,另2个性状呈主基因+多基因模型的多峰分布。各性状在后代中的变异系数分布在9.13%~58.41%之间,其中最小和最大的分别为果形指数和可滴定酸质量分数;遗传传递力分布在54.91%~126.81%之间,其中最弱和最强的分别为果实大小和果肉硬度。果实大小、果形指数和果心大小呈趋中变异趋势;可滴定酸质量分数呈高亲遗传趋势;果肉硬度和可溶性固形物质量分数呈超高亲遗传趋势。相关及通径分析表明,果实大小与果心大小及果肉硬度呈极显著负相关,且果肉硬度对果实大小直接作用最大;可溶性固形物质量分数与果形指数和可滴定酸质量分数间呈极显著和显著正相关,果形指数直接作用最大。
中文关键词:  果实性状  数量性状  正态分布  遗传变异  相关分析  通径分析
 
Genetic Analysis and Correlation Study on Pear Fruit Characteristics in F1 Generation
Abstract:Genetic tendency of six fruit characteristics(fruit size,fruit shape index,core size,flesh hardness,soluble solids mass fraction (SSC) and titratable acid mass fraction (TAC))and their genetic correlation analysis were investigated on‘Pingguoli’and ‘Bayuehong’ and their 210 F1 hybrid progenies.The results showed that fruit size,fruit shape index,core size and SSC fitted normal or skewed normal distribution,and the other traits showed the major gene+polygene mixed model distribution.The coefficient of variation (CV) of the characteristics was between 9.13%-58.41%, among which CV of fruit shape was the lowest and TAC was the highest;the inheritance of transfer ability (TA) of the characteristics was between 54.91%-126.81%, among which the TA of fruit size was the lowest and flesh hardness was the highest.Fruit size, fruit shape index and core size showed a central tendency; TAC showed higher value than their parents; flesh hardness and SSC had over high-parent tendency.Correlation and path analysis indicated that the fruit size had significant negative correlation with core size and flesh hardness, and flesh hardness had the greatest direct effect on fruit size.SSC had significant positive and positive correlation with fruit shape index and TAC, and shape index had the most direct effect.
keywords:Pear  Fruit characteristics  Quantitative character  Normal distribution  Genetic variation  Correlation analysis  Path analysis
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