关键词: 分化, 分化

Abstract:

In order to improve the value of ‘Pingguoli’ fruits, overcome the drawbacks and promote the breeding work of pear, the variant traits of hybrid seedlings from seven crosses taken ‘Pingguoli’ pear as one paternal material were determined and genetic tendencies of major fruit traits were analyzed. The results showed that the heritability of soluble solid content in hybrid seedlings was 100.3% near to mid-parent value. The flavors of hybrid progenies appeared high proportion of sour-sweet, sweet-sour and sweet types. No soft-flesh progenies were found from crosses between ‘Pingguoli’ pear and crisp pears and the majority of progenies crossed between ‘Pingguoli’ pear and soft-flesh types bore crisp fruits. Compared to paternal parents, the progenies showed a decreasing tendency in the juice content. Thus, ‘Pingguoli’ pear showed high genetic tendency in the economic fruit traits and has a wide range of application in breeding of pear in northern China.