Study on the Distant Hybridization Compatibility Between Castanea mollissima and C.henryi(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Study on the Distant Hybridization Compatibility Between Castanea mollissima and C.henryi

Author(s):: LIU Guo-bin¹; LAN Yan-ping¹; CAO Jun¹; LAN Wei-zong¹; ZHOU Liand-¹; WANG Jin-bao²; LIU Jian-ling²; 1.Institute of Agricultural Integrated Development,Beijing Academy of Agricultural and Forestry Sciences,Beijing 100097；
2.Beijing Huairou Chestnut Experiment Station,Beijing 102206

Abstract:: Taking three varieties of C.Mollissima(‘Yanhong’，‘Huaihuang’，‘Huaijiu’) as ?female parent,C.henryi as male parent,the distant hybridization compatibility between C.mollissima and C.henryi were studied in this paper.The results showed that,through three years test,the average seed setting rate between C.mollissima and C.henryi was only 23.6%,the lowest was 6.5%,and the empty bur rate was high (50.1%),the highest was 77.5%；pollinations and seed setting characteristics among different hybrid combination and different years was different,difference of seed setting rate among different years was significant and there was no obvious difference among different hybrid combinations,but the fruitage rate and empty bur rate had the different results；the female parent played an important role in regulating the seed setting rate between C.mollissima and C.henryi.In our experiment,seed setting rate of ‘Huaihuang’× C.henry and ‘Huaijiu’ × C.henryi were higher than that of ‘Yanhong’ × C.henryi,and the heterosis of interspecific was also obviously,this showed that choosing appropriate parent had very important significance in improving the distant hybridization compatibility between C.mollissima and C.henryi.

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Last Update: 2014-08-11