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Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (11): 58-63.doi: 10.11707/j.1001-7488.20141108

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Genetic Analysis of Nut Traits on Tester Strain of Hybrid Hazelnuts (Corylus heterophylla × C. avellana)

Han Qiang1,2, Dong Yuzhi1, Song Fenghui1,2, Shi Yanjiang2, Han Junwei1,2   

  1. 1. College of Forestry and Horticulture, Xinjiang Agricultural University Urumqi 830052;
    2. Research Institute of Economic Forestry, Xinjiang Academy of Forestry Urumqi 830063
  • Received:2014-01-08 Revised:2014-07-03 Online:2014-11-25 Published:2014-12-04

Abstract:

In this study, four hybrid hazelnuts (Corylus heterophylla×C. avellana), main cultivars in Xinjiang, named Dawei, Liaozhen7, Yuzhui and Ping'ou15, were used as maternal parent and the hybrid hazels of 1-25,84-102, 85-57,84-5,B-21 as male parents for controlled pollination according to a testcross mating design. The combining ability of the parents was analyzed based on nut characters of intraspecific cross to illuminate the feasibility of hybrid hazelnut pollination tree configuration and the influence of parents on their fruit characters. The results of variance analysis showed that these nut characters of intraspecific crosses displayed significant differences among seven different hybridized combination, but not significant differences between repeated blocks.The general combining ability and the maternal effects were significant, while the special combining ability and the male effects were not significant. These nut characters of intraspecific crosses were mainly controlled by the additive gene effects and affected more by the maternal. Ping'ou15, should be used as a main variety, and further promoted in Xinjiang because of its excellent fruit quality parameters and its better fruit shape. The male parent 84-5 could be regarded as the main pollination cultivars because of the greatest general combining ability of the nut three diameter mean value, fruit weight, kernel rate and the fruit cavity coefficient. Additionally, the shell thickness has a negative effect, which all are conducive to nut economic characters and make it suitable to be used as a pollinating cultivar.

Key words: Corylus heterophylla×, C. avellana, tester strain, combining ability, genetic analysis

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