Relationship of Parental Genetic Distance with Crossing Offspring Heterosis in Ducks

doi:10.3321/j.issn:1000-7091.2006.02.031

Abstract

Abstract: The random amplified polymorphic DNA(RAPD) technique was applied to the genetic analysis of Muscovy,Cherry Valley Meat ducks Partridge ducks and their crossbreed F₁ and F₂ The results indicated that the RAPD was an effective marker for the analysis of genetic relationship among ducks.760 fragments were generated by using 20 primers,among which,568 were polymorphic.The percentage of polymorphic markers was 74.7%,which indicated that the RAPD had higher efficiency of polymorphism detection and sensitivity in studying the genetic variation among ducks and showed that the genetic polymorphism was abundant among species of ducks population.The ratio of polymorphic loci and genetic similarity in the first filial and second filial were also calculated,and the values were 67.9%,83.1% and 0.8227,0.8264,respectively.This result revealed that the heterosis of the second filial could bi explained by the dominance hypothesis.

Key words: RAPD, First filial(F₁), Second filial ( F₂), Heterosis, Genetic distance

CLC Number:

S834

SU Ying, LIU Chu-wu, YE Chang-hui, LIU Li, ZHANG Jin, CAI Di-yang, HUANG Yu-qing, CAO Wu-qi. Relationship of Parental Genetic Distance with Crossing Offspring Heterosis in Ducks[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2006, 21(2): 127-131. doi: 10.3321/j.issn:1000-7091.2006.02.031.

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