Molecular cytogenetic analysis of a durum wheat ×Thinopyrum distichum hybrid used as a new source of resistance to Fusarium head blight in the greenhouse

• DOI: 10.1046/j.1439-0523.2001.00630.x
• Publication Date: 2003-03-12T16:17:14Z
• Authors: Q. Chen; F. Eudes; R. L. Conner; R. Graf; A. Comeau; J. Collin; F. Ahmad; R. Zhou; H. Li; Y. Zhao; A. Laroche
• Keywords: Germ plasm

Abstract Fusarium head blight (FHB, scab), caused by graminearum Schwabe, is a serious and damaging disease of wheat. Although some hexaploid wheat lines express good level resistance to FHB, the available in has not yet been transferred durum A germplasm collection Triticum × alien hybrid was tested as potential source FHB under controlled conditions. Their reaction evaluated three tests against conidial suspensions strains F. at flowering stage. Two T. Thinopyrum distichum lines, ‘AFR4’ ‘AFR5′, expressed significantly higher spread than other durum‐alien resistant common line ‘Nyu‐Bay’. Genomic situ hybridization using total genomic DNA from grass species demonstrated that ‘AFR5’ had 13 or 14 genome chromosomes plus 27 28 chromosomes, while 22 chromosomes. All present these two belonged J genome. likely be more useful because its relatively normal meiotic behaviour, high fertility fewer number shows for transferring gene into The development addition carrying genes underway.