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ACTA HORTICULTURAE SINICA ›› 2011, Vol. 38 ›› Issue (10): 1901-1910.

• Vegetables • Previous Articles     Next Articles

New Alien Additon Lines Resistance to Black Rot Generated by Somatic Hybridization Between Cauliflower and Black Mustard

WANG Gui-xiang1,YAN Hong2,ZENG Xing-ying1,SHENG Xiao-guang1,TANG Yu1,HAN Shuo1,ZONG Mei1,LU Kun1,and LIU Fan1,*   

  1. 1Beijing Vegetable Research Center,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China;2Institute of Plant and Environmental Protection,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China
  • Received:2011-08-18 Revised:2011-10-08 Online:2011-10-25 Published:2011-10-25
  • Contact: LIU Fan1,*

Abstract: In this study,the asymmetrical somatic hybrids of cauliflower and Brassica nigra and their selfed or backcrossed progenies were analysed using morphological,cytological and molecular methods. Fifty advanced selfing or backcrossing descendants were obtained. Besides 30 lines with an intermediate morphology to that of the parents,there were 20 lines with a nuclear DNA content below 2.24 pg · cell-1 and chromosomes number less than 28 displaying the cauliflower-like morphology. Combining with successive black rot resistance assay,a set of alien additon lines were obtained,in which 12 lines with high resistance,17 lines being resistant,those accounted for 14% of the total materials tested. Three plants(PFCN29 BC3-3-5,PFCN16-1 S2BC3-107 and PFCN14-1 S1BC4-123)displayed a more cauliflower-like morphology and high resistance to Xcc strain CH15 were confirmed to have a total set of cauliflower chromosomes added with 2,7 and 8 B. nigra-derived chromosomes respectively by genomic in situ hybridization(GISH).

Key words: cauliflower, black mustard, somatic hybridization, black rot, alien additon line

CLC Number: