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- W1991035666 abstract "Several studies have shown that the proportions of oleic and linoleic acid in the seed oil of safflower ( Carthamus tinctorius L.) are governed by two alleles at the ol locus. In some studies, however, fewer plants than expected had the olol genotype. The deviation from the expected ratio could have been caused by a genetic linkage between sterility and oleic or linoleic acid content. Although male‐female sterile plants appeared in the F 2 of such studies, sterile plants were not used in measurements of fatty acid composition. The objective of this investigation was to detect possible genetic association between sterility and oil quality genes. We examine data from a cross of US‐10 with genotype OlOl (high linoleic acid) to 57–147, an introduction from India with genotype olol (high oleic acid). This cross gave sterile plants the F 2 . We measured the iodine value (IV) in bulk seeds from 217 selfed, fertile F 2 plants and found a distorted ratio due to fewer than expected plants with low IV (genotype olol ). Using the half‐seed technique to determine the fatty acid composition of 342 (fertile and sterile) F 2 seeds from selfed F 1 plants, there was no deficiency in the expected number of olol genotypes. The difference in the ratios of the F 2 plants grown from half‐seeds and those used in fatty acid measurements indicate linkage between sterility and the ol locus. Of the genes involved in sterility, where sterile genotypes are s 1 s 1 s 2 s 2 S 3 —, s 1 s 1 S 2 — s 3 s 3 , and s 1 s 1 s 2 s 2 s 3 s 3 , a statistically significant deviation was detected due to linkage between the s 1 and ol loci. This information should be considered by breeders of safflower who systematically use introductions from a multitude of gene centers in their breeding programs." @default.
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- W1991035666 date "1993-03-01" @default.
- W1991035666 modified "2023-09-27" @default.
- W1991035666 title "Genetic Linkage between the Trigenic Male-Female Sterility and Oil Quality Alleles in Safflower" @default.
- W1991035666 doi "https://doi.org/10.2135/cropsci1993.0011183x003300020004x" @default.
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