Summary
The cytological behaviour, with emphasis on quadrivalent and bivalent formation at metaphase, was studied in four autotetraploid cereals: wheat, oats, barley, and rye, and in two grasses: Hordeum bulbosum, and Arrhenatherum elatius.
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1.
Chiasma frequency of the autotetraploids was less than twice that of diploids. No definite correlation relating chiasma frequency to the number of quadrivalents could be established.
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2.
In flax and maize, plants with small chromosomes, over 70% of the chromosomes were associated as quadrivalents. This value is slightly higher than the average for the cereals and grasses.
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3.
The effect of the environment, compared for two different growing seasons and one trial in a growth cabinet, was not found to be significant on chromosome associations.
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4.
With one exception in H. bulbosum, no differences in pairing behaviour within a species were demonstrated. The strains had different origins, and the colchicine-induced autotetraploids, differed in number of generations that had been grown since the time of their production.
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5.
A mean of 4.3 quadrivalents per cell was found for the six species and no species differed significantly from this value. There were, therefore, no major differences between the natural and the artificially produced autotetraploids. There was no evidence to indicate a trend towards bivalent formation in any of the autotetraploids.
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6.
Autotetraploids of some species had more seed set than others. Lines of T. monococcum with high and low fertility were selected. Because the amount of quadrivalent formation was the same in all lines it was concluded that genetical control and the impact of the environment affected the fertility more than irregularities of meiosis.
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References
Armstrong, J. M., and R. W. Robertson: Studies of colchicine-induced tetraploids of Trifolium hybridum L. I. Cross and self-fertility and cytological observations. Canad. J. agr. Sci. 36, 255–266 (1956).
Berg, K.: Autotetraploidie bei Hordeum bulbosum L. Züchter 8, 151–158 (1936).
Cauderon, Y., et Cauderon, A.: Etude de l'hybride F1 entre Hordeum bulbosum L. et H. secalinum Schreb. Ann. Amél. Plantes 6, 307–317 (1956).
Chin, T. C.: Cytology of the autotetraploid rye. Bot. Gaz. 104, 627–632 (1943).
Darlington, C. D.: Meiosis in polyploids. II. Aneuploid hyacinths. J. Genet. 21, 17–56 (1929).
—: The origin and behaviour of chiasmata. IX. Diploid and tetraploid Avena. Cytologia 5, 128–134 (1933).
—: Recent advances in cytology, 2nd ed. London: Churchill 1937.
—, and K. Mather: The origin and behaviour of chiasmata. III. Triploid Tulipa. Cytologia 4, 1–15 (1933).
Davies, D. R.: Male parthenogenesis in barley. Heredity 12, 493–498 (1958).
Essad, S.: La polyploidie et ses aspects évolutifs en relation avec l'amélioration des plantes. Ann. Amél. Plantes 7, 199–226 (1957).
Gfeller, F., and C. H. Goulden: The effect of the intensity of artificial light on the growth of cereals. Canad. J. Bot. 32, 318–319 (1954).
Gilles, A., and L. F. Randolph: Reduction of quadrivalent frequency in auto-tetraploid maize during a period of ten years. Amer. J. Bot. 38, 12–17 (1951).
Hilpert, G.: Effect of selection for meiotic behaviour in autotetraploid rye. Hereditas (Lund) 43, 318–322 (1957).
Jones, K.: Species differentiation in Agrostis. I. Cytological relations in Agrostis canina L. J. Genet. 54, 370–376 (1956).
- Welsh Plant Breeding Station Report 1950–1956, p. 158.
Kostoff, D.: Fertility and chromosome lengths. Correlation between chromosome length and viability of gametes of autopolyploid plants. J. Hered. 31, 33–34 (1940).
Lein, A.: Natürliche Standorte von diploidem und tetraploidem Hordeum bulbosum L. Züchter 19, 6–9 (1948).
McCollum, G. D.: Comparative studies of chromosome pairing in natural and induced tetraploid Dactylis. Chromosoma (Berl.) 9, 571–605 (1958).
Mehta, R. K., and M. S. Swaminathan: Studies on induced polyploids in forage crops. Ind. J. Genet. Plant Breeding 17, 27–57 (1957).
Morrison, J. W.: Chromosome behaviour and fertility of Tetra Petkus rye. Canad. J. agr. Sci. 36, 157–165 (1956).
Müntzing, A.: The evolutionary significance of autopolyploidy. Hereditas (Lund) 21, 263–378 (1936).
—: The effects of chromosomal variation in Dactylis. Hereditas (Lund) 23, 113–225 (1937).
—: Cytogenetic properties and practical value of tetraploid rye. Hereditas (Lund) 37, 17–84 (1951).
Myers, W. M.: Analysis of variance and covariance of chromosomal association and behaviour during meiosis in clones of Dactylis glomerata. Bot. Gaz. 104, 541–552 (1943).
—: Meiosis in autotetraploid Lolium perenne in relation to chromosomal behaviour in autopolyploids. Bot. Gaz. 106, 304–316 (1945).
Myers, W. M., and H. D. Hill: Studies of chromosomal association and behaviour and occurrences of aneuploidy in autotetraploid grass species, Orchard Grass, Tall Oat Grass, and Crested Wheat Grass. Bot. Gaz. 102, 236–255 (1940).
—: Variations in chromosomal association and behaviour during meiosis among plants from open-pollinated populations of Dactylis glomerata. Bot. Gaz. 104, 171–177 (1942).
Nishiyama, I.: Cytological studies in Avena, I. Chromosome association in hybrids between Avena barbota Pott, and autotetraploid of A. strigosa Schreb. Cytologia 7, 276–281 (1936).
Pao, W. K., and H. W. Li: Desynapsis and other abnormalities induced by high temperature. J. Genet. 48, 297–310 (1948).
Peto, F. H.: Heat induced tetraploid in barley. Canad. J. Res. C 14, 445–447 (1936).
Prakken, R.: Studies of asynapsis in rye. Hereditas (Lund) 29, 475–495 (1943).
Rajhathy, T.: Tetraploides Triticum monococcum L. (2n = 28). Züchter 27, 85–89 (1957).
Ramanujam, S., and N. Parthasarathy: Autopolyploidy. Ind. J. Genet. Plant Breeding 13, 53–82 (1953).
Randolph, L. F.: An evaluation of induced polyploidy as a method of breeding crop plants. Amer. Naturalist 75, 347–365 (1941).
Rees, H.: Genotypic control of chromosome behaviour in rye. I. Inbred lines. Heredity 9, 93–116 (1955).
Smith, W. E.: Fertility studies in autotetraploid barley varieties and their hybrids. Proc. Genet. Soc. Can. 3, 49 (1958).
Sparrow, A. H., M. L. Ruttle and B. R. Nebel: Comparative cytology of sterile intra and fertile intervarietal tetraploids of Antirrhinum majus L. Amer. J. Bot. 29, 711–715 (1942).
Stebbins, G. L.: Variation and evolution in plants. New York: Columbia University Press 1950.
Swauson, C. P.: Cytology and cytogenetics. Englewood Cliffs, New Jersey: Prentice — Hall, Inc. 1957.
Tsuchiya, T.: Fertility of autotetraploids and their hybrids in barley. II. Meiosis and fertility in tetraploid hybrids. Seiken Ziho 8, 27–32 (1957).
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Contribution No. 20 from the Genetics and Plant Breeding Research Institute.
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Morrison, J.W., Rajhathy, T. Chromosome behaviour in autotetraploid cereals and grasses. Chromosoma 11, 297–309 (1960). https://doi.org/10.1007/BF00328656
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DOI: https://doi.org/10.1007/BF00328656