caa a22 4500 477133185 CHVBK 20180405111709.0 cr unu---uuuuu 170330e19970301xx s 000 0 eng 10.1023/A:1002933608249 doi (NATIONALLICENCE)springer-10.1023/A:1002933608249 The genetics of rachis fragility and glume tenacity in semi-wild wheat [Elektronische Daten] [Wenguang Cao, G.J. Scoles, P. Hucl] The inheritance of rachis fragility and glume tenacity in semi-wild wheat was studied in an attempt to help establish the taxonomic status and genetic origin of semi-wild wheat. Progenies of crosses and backcrosses of semi-wild wheat with the cultivar Columbus (common wheat) indicated that the fragile rachis and non-free-threshing character of semi-wild wheat were dominant to the tough rachis and free-threshing character of common wheat. F2 and backcross data indicated that the rachis fragility and glume tenacity of semi-wild wheat were each controlled by a single gene in the cross of semi-wild wheat with Columbus. In the cross of semi-wild wheat with Triticum aestivum spp. spelta, the F2 and F3 population did not segregate for glume tenacity, but did segregate for rachis fragility. The F2 and backcross data suggest that three genes interact to control three types of rachis fragility, i.e. semi-wild wheat-type, spelta-type and the tough rachis of common wheat. Semi-wild wheat differs from common wheat in rachis fragility and glume tenacity. This wheat also differs from other wheats with fragile rachis and tenacious glumes (T. aestivum ssp. spelta, macha and vavilovii) in the pattern and degree of rachis disarticulation. We conclude that semi-wild wheat is likely a subspecies within T. aestivum at the same taxonomic level as spp. spelta, macha and vavilovii. Kluwer Academic Publishers, 1997 glume tenacity nationallicence inheritance nationallicence rachis fragility nationallicence spelta nationallicence semi-wild wheat nationallicence Triticum aestivum nationallicence Cao Wenguang Department of Crop Science and Plant Ecology, Canada aut Scoles G.J. Department of Crop Science and Plant Ecology, Canada aut Hucl P. Crop Development Centre, University of Saskatchewan, 51 Campus Drive, S7N 5A8, Saskatoon, Saskatchewan, Canada aut Euphytica Kluwer Academic Publishers 94/1(1997-03-01), 119-124 0014-2336 94:1<119 1997 94 10681 https://doi.org/10.1023/A:1002933608249 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1002933608249 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cao Wenguang Department of Crop Science and Plant Ecology, Canada aut NATIONALLICENCE 700 1- Scoles G.J. Department of Crop Science and Plant Ecology, Canada aut NATIONALLICENCE 700 1- Hucl P. Crop Development Centre, University of Saskatchewan, 51 Campus Drive, S7N 5A8, Saskatoon, Saskatchewan, Canada aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 94/1(1997-03-01), 119-124 0014-2336 94:1<119 1997 94 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer