Abstract
Microseris strain C34 is a hybrid between the Chilean speciesM. pygmaea (10 pappus parts) and the CalifornianM. bigelovii (5 pappus parts). The plants are propagated by selfing from the original hybrid specimen. Each plant has from 5 to 10 pappus parts per achene with an average value that is additively determined by four unlinked quantitatively acting genes. Single-gene heterozygote sublines have been obtained for two of these,pp-1 (shown to be linked to a modifier of acid phosphatase-1) andpp-4. Sublines homozygous for all four additive genes show residual genetic variation influencing pappus part number. At least one additional gene can be demonstrated by its linkage with leucine aminopeptidase-1. Lines for the further characterization of these hypostatic genes are selected.
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Zentgraf, J., Bachmann, K., Chambers, K.L. et al. Single-gene heterozygotes derived from the polygenic pappus part system ofMicroseris hybrid C34 (Asteraceae—Lactuceae). Pl Syst Evol 147, 205–226 (1984). https://doi.org/10.1007/BF00989384
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DOI: https://doi.org/10.1007/BF00989384