ISHS Acta Horticulturae 205: Symposium on the Development of New Floricultural Crops, XXII IHC
CHROMOSOME STUDIES IN GENUS ALSTROEMERIA |
| Authors: | T. Tsuchiya, A. Hang |
| Abstract:
Chromosomes of 9 species and 25 cultivars from different sources were studied in somatic cells and microsporocytes in the genus Alstroemeria. All 9 species had 2n=2×=16 chromosomes with different karyotypes. Chromosome numbers of four cultivars were 2n=2×=16 chromosomes, 12 were 2n=3×=24, 1 was 2n=3×+1=25, and 8 were tetraploid with 4×–1=31, 4×=32, 4×+1=33, with 6 plants having 2n=32. Meiotic behavior of chromosomes was normal in some species. However, meiosis was abnormal in all cultivars even in diploids. Pollen fertility was high in all species, but was very low in most cultivars with the exception of Orange Beauty (2n=25) and most of the tetraploids which had some good pollen grains. | |
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