Autotetraploidy in caraway (Carum carvi L.) for the increase of the aetheric oil content of the seed |
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Authors: | H. Dijkstra G. J. Speckmann |
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Affiliation: | (1) Foundation for Agricultural Plant Breeding (SVP), Wageningen, the Netherlands |
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Abstract: | Summary An autotetraploid population of caraway (Carum carvi L.) was produced by treating the growing points of young plants with a 0.2% colchicine solution. Selection on morphology, pollen size and pollen shape, followed by a selection on seed size proved to be an effective way to identify the mixoploid C0 plants. Three percent of the treated plants produced a tetraploid progeny. Moderate selection in the C1 and the C2 population resulted in an improvement of the average seed-set to the amount of 50% of the diploid control, with a range of 21–78%. The 1000-kernel weight of the tetraploid material was 7 g, compared to 3 g in the diploid control. The oil content of the autotetraploid seed was increased with 35.6%; the increase in carvone amounted to 6.9%. The results of the experiment indicate that breeding work in autotetraploid caraway may result in a new cultivar. |
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Keywords: | Carum carvi caraway autotetraploidy aetheric oil carvone |
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