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- W2095481570 abstract "Abstract Eight tomato cultivars of diverse genetic background were crossed with the Fe‐inefficient line T3820 fer at the U. S. Vegetable Laboratory, Charleston, South Carolina. Seedlings of the F2 generation were subjected to Fe‐deficiency stress to determine if there were modifier or minor genes present in any of the cultivars that could increase the efficiency of Fe absorption in the presence of the fer gene. The F2 plants segregated for the single gene (fer) in the expected 3:1 phenotypic ratio and the plants were either extremely chlorotic or they were totally green. The Fe concentration was approximately four times greater in the green as in the chlorotic plants. The data indicate that Fe efficiency may be greater in some cultivars than others suggesting that breeding Fe‐efficient cultivars may be a feasible objective in plant breeding programs. Following two generations of selection based on visual appearance, Fe‐stressed fer plants, from crosses with breeding line T‐3790 and cultivar MH‐1, recovered more rapidly than those from crosses with six other cultivars. If this proves to be a genetic phenomenon, then minor genes for Fe efficiency could be used to develop more Fe‐efficient cultivars. The fer gene provides a background against which the minor genes can be readily identified. In addition to tanato: soybeans, sorghum, corn, oats, blueberries, (and other crops that differentially respond to Fe‐deficiency stress) can be used as indicator plants in diagnosing soils that are deficient in available iron. These plants can also be used comparatively in plant breeding programs. Tolerance to Al, Mi (acid soils) and salinity, and absorption and transport of Cu, Zn, Mi, B, N, K, and P all seem to be genetically controlled in some plant genotypes. How plants differ in this respect opens a new era in plant nutrition and gives the plant an active role in problems related to soil/plant management." @default.
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- W2095481570 date "1982-01-01" @default.
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- W2095481570 title "Breeding for Fe efficiency: Use of indicator Hants" @default.
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- W2095481570 doi "https://doi.org/10.1080/01904168209362990" @default.
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