Abstract
As the first step in the transfer of barely yellow dwarf virus resistance and salt tolerance from decaploid tall wheatgrass (Thinopyrum ponticum) into hexaploid bread wheat (Triticum aestivum L.), octoploid intergeneric hybrids (2n = 8x = 56) were synthesized by crossing the tall wheatgrass cultivar ‘Alkar’ with wheat cvs. ‘Fukuhokomugi’ (‘Fuko’) and ‘Chinese Spring’. (‘Fuko’ x ‘Alkar’) F1 hybrids were studied in detail. The F1 hybrids were perennial and generally resembled the male wheatgrass parent with regard to morphological features and gliadin profile. Most hybrids were euploid with 56 chromosomes and showed high chromosome pairing. On an average, in 6 hybrids 83.6% of the complement showed chiasmatic association, some between wheat and wheatgrass chromosomes. Such a high homoeologous pairing would be obtained if Ph1, the major homoeologous pairing suppressor in wheat, was somehow inactivated. Some of the ‘Fuko’ x ‘Alkar’ hybrids had high pollen fertility (18.5–42.0% with a mean of 31.5%) and high seed fertility (3–29 seeds wtih a mean of 12.3 seeds per spike), offering excellent opportunities for their direct backcrossing onto the wheat parent.
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References
Armstrong JM (1936) Hybridization of Triticum and Agropyron. I. Crossing results and description of the first-generation hybrids. Can J Res C 14:190–202
Bai D, Knott DR (1993) The effects of level of 2,4-D and time in culture on regeneration rate and chromosome numbers of regenerants from calli of the hybrid Triticum aestivum cv. Chinese Spring ph1b x Thinopyrum ponticum (2n = 10x = 70). Genome 36:166–172
Brar DS, Khush GS (1986) Wide hybridization and chromosome manipulations in cereals. In: Evans DA, Sharp WR, Ammirato PV (eds) Handbook of plant cell culture, vol 4. Techniques and applications. Macmillan Publ, New York, pp 221–263
Chen PD, Tsujimoto H, Gill BS (1994) Transfer of Ph I genes promoting homoeologous pairing from Triticum speltoides to common wheat. Theor Appl Genet 88:97–101
Cox TS (1991) The contribution of introduced germplasm to the development of U.S. wheat cultivars. In: Shands HL, Wiesner LE (eds) Use of plant introductions in cultivar development, part 1. Special Publication No. 17. Crop Science Society of America, Madison, Wis., USA, pp 25–47
Cugnac A, Simonet M (1953) Étude cytogénétique de quelques hybrids intergénériques d'Agropyron, Agroelymus, Agrohordeum et Agrotriticum. Ann Amel Plant 4:433–452
Dvořák J (1976) The cytogenetic structure of a 56-chromosome derivative from a cross between Triticum aestivum and Agropyron elongatum (2n = 70). Can J Genet Cytol 18:271–279
Dvořak J, Knott DR (1974) Disomic and ditelosomic additions of diploid Agropyron elongatum chromosomes to Triticum aestivum. Can J Genet Cytol 16:399–417
Jauhar PP (1975) Genetic regulation of diploid-like chromosome pairing in the hexaploid species, Festuca arundinacea Schreb. and F. rubra L. (Gramineae). Chromosoma 52:363–382
Jauhar PP (1991) Meiosis and seed fertility of hybrids between hexaploid bread wheat and decaploid tall wheatgrass (Thinopyrum ponticum). Agron Abstr, American Society of Agronomy, Madison, Wis., p 100
Jauhar PP (1992) Chromosome pairing in hybrids between hexaploid bread wheat and tetraploid crested wheatgrass (Agropyron cristatum). Hereditas 116:107–109
Jauhar PP (1993a) Alien gene transfer and genetic enrichment of wheat. In: Damania AB (ed) Biodiversity and wheat improvement. John Wiley and Sons, Chichester, England, pp 103–119
Jauhar PP (1993b) Cytogenetics of the Festuca-Lolium complex: relevance to breeding. Springer, Berlin Heidelberg New York, pp 43–56
Jiang J, Friebe B, Gill BS (1994) Recent advances in alien gene transfer in wheat. Euphytica 73:199–212
Kasaeva KA (1973) Investigations of auto and allo-syndesis in the course of meiosis of hard wheat and couch grass hybrids. Akad Sci SSSR Ser Biol, pp 109–123
Knott DR (1961) The inheritance of rust resistance. VI. The transfer of stem rust resistance from Agropyron elongatum to common wheat. Can J Plant Sci 41:109–123
Konarev VG, Gavriljuk IP, Gubareva NK, Choroshailov HG (1981) Electrophoretic and serological methods in seed testing. Seed Sci Technol 9:807–817
McIntosh RA (1991) Alien sources of disease resistance in bread wheats. In: Sasakuma T, Kinoshita T (eds) Proc Dr. H. Kihara Memorial Int Symp Cytoplasmic Eng Wheat. Nuclear Organ Genomes Wheat Species. Kihara Institute for Biological Research, Yokohama City University, Yokohama, Japan, pp 320–332
Sears ER (1976) Genetic control of chromosome pairing in wheat. Annu Rev Genet 10:31–51
Shannon MC (1978) Testing salt tolerance variability among tall wheatgrass lines. Agron J 70:719–722
Sharma HC, Gill BS (1983) Current status of wide hybridization in wheat. Euphytica 32:17–31
Sharma D, Knott DR (1966) The transfer of leaf rust resistance from Agropyron to Triticum by irradiation. Can J Genet Cytol 8:137–143
Sharma HC, Ohm HW, Lister RM, Foster JE, Shukle RH (1989) Response of wheatgrass and wheat x wheatgrass hybrids to barley yellow dwarf virus. Theor Appl Genet 77:369–374
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Communicated by G. S. Khush
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Jauhar, P.P. Meiosis and fertility of F1 hybrids between hexaploid bread wheat and decaploid tall wheatgrass (Thinopyrum ponticum). Theoret. Appl. Genetics 90, 865–871 (1995). https://doi.org/10.1007/BF00222024
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DOI: https://doi.org/10.1007/BF00222024