Interaction ofTriticum boeoticum cytoplasm and genomes ofT. aestivum andT. durum: Restoration of male fertility and plant vigor |
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Authors: | S S Maan K A Lucken |
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Institution: | (1) North Dakota State University, 58102 Fargo, North Dakota, USA |
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Abstract: | Summary Male-sterile plants of reduced vigor were obtained by substitutingT. aestivum and/orT. durum genomes into the cytoplasm ofT. boeoticum, T. monococcum and amphidiploidT. boeoticum-A. squarrosa. Apparent segregation for plant vigor occurred even in advanced generations of the following backcross progenies:T. boeoticum/12*T. durum, T. monococcum/10*T. durum, T. boeoticum/2*T. durum//7*T. aestivum, amphidiploidT. boeoticum-A. squarrosa/6*T. durum and amphidiploidT. boeoticum-A. squarrosa/8*T. aestivum. Highly fertile F1 hybrids of normal vigor were obtained from crosses of A lines of common wheat in the cytoplasm of amphidiploidT. boeoticum-A. squarrosa orT. timopheevi with R lines having male fertility restoring factors fromT. boeoticum, T. boeoticum-A. squarrosa andT. zhukovskyi. Apparently, vigor-genes complemented the male fertility restoring genes to produce fertile hybrids of normal plant vigor in the crosses amphidiploidT. boeoticum-A. squarrosa/6*T. aestivum, Chris//amphidiploidT. boeoticum-A. squarrosa/T. durum/T. aestivum, Chinese Spring, andT. zhukovskyi/3*T. aestivum, Justin F8 R lines.Published with the approval of the Director, North Dakota State Agricultural Experiment Station, as Journal Article No. 231Associate Professors of Agronomy. |
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