梨杂交F1代果实性状遗传规律分析
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1.吉林省农业科学院果树研究所;2.农业部东北地区吉林果树科学观测试验站

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国家现代农业产业技术体系建设专项资金项目(CARS-28-05)


Analysis of Fruit Trait Genetics in F1 Generation of Pyrus Species
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Affiliation:

Pomology Institute,Jilin Academy of Agricultural Sciences,Gongzhuling

Fund Project:

China Agriculture Research System of MOF and MARA(CARS-28-05)

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    摘要:

    以‘延边大香水’为母本的7个梨杂交组合F1代为试材,对果实性状进行连续三年调查,总结分析果实性状遗传规律,以期为梨遗传育种提供参考依据。结果表明:杂种F1代单果重、果实横径、果实纵径、果柄长度、果柄粗度、果形指数及可溶性固形物等7个性状都有趋中遗传倾向。其中,单果重产生退化,向小果遗传趋势强;可溶性固形物和果形指数变异系数小,组合传递力和优势率高,具有杂种优势;果柄粗度呈趋中偏低遗传,果柄长度、果实横径、果实纵径呈趋中偏高遗传。对不同组合果实性状遗传规律研究认为果实底色、萼片、萼洼、质地、汁液、风味等性状受母本影响较大,为母性遗传; 果肉类型趋中遗传且受父本影响较大,果实香气受父本影响也较大;果实面色可隔代遗传。以上研究结果为梨果实性状遗传规律研究及杂交育种亲本的选择选配提供参考价值。

    Abstract:

    To provide reference for pear breeding, the genetic law of fruit trait was studied by using F1 generation of 7 cross combinations with ‘Yanbiandaxiangshui’ as female parent through three consecutive years. The results showed that the seven traits of F1 hybrids, including single fruit weight, fruit diameter, fruit length, stalk length, stalk thickness, fruit shape index, and soluble sugar content that all showed a central tendency. Among of them, single fruit weight has a strong genetic tendency towards small fruit; The coefficient of variation of soluble solid contents and fruit shape index was small, the genetic transmissibility and heterosis rate were highs; The inheritance of stalk diameter tended to be medium to low, while the inheritance of stalk length, fruit diameter and fruit length tended to be medium to high;.The studies suggested that background color, sepals, eye basin, flesh texture, juice, and flavor were greatly influenced by the maternal parent; The flesh texture type inherited tend to medium and greatly influenced by male parents , which was same as to aroma;Cover color could be?inherited?in?other?generation. The results provide reference value for studying the genetic laws of pear fruit traits and selecting parents for hybrid breeding.

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  • 收稿日期:2023-06-25
  • 最后修改日期:2023-08-04
  • 录用日期:2023-08-16
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