Summary
Six primary triticale lines were produced from two advanced breeding lines of Triticum durum and three inbred genotypes of Secale cereale. The wheat and rye parents as well as the triticale derivatives were then crossed each within the same group of species in all possible combinations. Parents, F1s, and F2 populations were used to study the inheritance of a set of morphological and yield characters. The results suggest that, in general, in triticale allelic interactions within the wheat and the rye components are suppressed in favour of intergenomic interactions. Heterozygosity in the rye genome appeared to be detrimental for triticale, whereas heterozygosity in the wheat genome only resulted in positive interactions between certain characters. The retention of a high level of heterosis for kernels per spike in the F2 generation of such hybrids indicates interactions between genes which are in the homozygous state in the rye but remain in the heterozygous state in the wheat genome. If heterozygosity in the wheat component occurs between genes in the A and B genomes (homoeoalleles), it can be fixed in true breeding lines. This condition may ultimately lead to the fixation of their benefical effect on the interaction between wheat and rye genome. Aneuploidy caused a significant decline in performance for most of the investigated characters.
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References
Carrillo JM, Monteagudo A, Sanchez-Monge E (1983) Inheritance of yield components and their relationships to plant height in hexaploid triticale. Z Pflanzenzücht 90:153–165
Gill KS, Sardha GS, Dhindsa GS (1979) Combining ability for grain yield and other characters in triticale. In: Ramanujam S (ed) Proc 5th Int Wheat Genet Symp. Indian Soc Genet Plant Breed, New Delhi, pp 1172–1178
Griffing B (1956) Concept of general and specific combining ability in relation to diallel crossing systems. Aust J Biol Sci 9:463–493
Jung C, Lelley T, Röbbelen G (1985) Genetic interactions between wheat and rye genomes in triticale. 1. Cytological characters. Theor Appl Genet 70:422–426
Kaltsikes PJ, Lee J (1973) The mode of inheritance of yield and characters associated with it in hexaploid triticale. Z Pflanzenzücht 69:135–141
Lelley T (1978) Specific interaction for meiotic regulation of wheat and rye in triticale, consequences for triticale breeding. In: Ramanujam S (ed) Proc 5th Int Wheat Genet Symp. Indian Soc Genet Plant Breed, New Delhi, pp 1213–1217
Lelley T (1984) Increased selection efficiency of triticale through restriction of recombination to one parental genome. In: Proc 6th Int Wheat Genet Symp, Kyoto (in press)
Lukaszewski AJ, Apolinarska B (1981) The chromosome constitution of hexaploid winter triticales. Can J Genet Cytol 23:281–285
Müntzing A (1939) Studies on the properties and the way of production of rye-wheat amphidiploids. Hereditas 25:387–430
Oettler G (1982) Relationship between the performance of primary triticale and the heterozygosity of their rye genome. Z Pflanzenzücht 88:335–338
Pilch J (1981 a) Analysis of the rye chromosome constitution and the amount of telomeric heterochromatin in the widely and narrowly adapted hexaploid triticale. Theor Appl Genet 60:145–149
Pilch J (1981 b) Rye chromosome constitution and the amount of telomeric heterochromatin of the widely and narrowly adapted CIMMYT hexaploid triticales. Z Pflanzenzücht 87:58–68
Rao VR, Joshi MG (1979) A study on inheritance of yield components in hexaploid triticale. Z Pflanzenzücht 82:230–236
Reddy LV (1976) Combining ability analysis of some quantitative characters in hexaploid triticale. Theor Appl Genet 47:227–230
Scoles GJ, Kaltsikes PJ (1974) The cytology and cytogenetics of triticale. Z Pflanzenzücht 73:13–43
Srivastava PSL, Arunachalam V (1977) Heterosis as a function of genetic divergence in triticale. Z Pflanzenzücht 78:269–275
Widner JN, Lebsock KL (1973) Combining ability in durum wheat. 1. Agronomic Characteristics. Crop Sci 13:164–167
Wricke G (1973) Inzuchtdepression und Genwirkung beim Roggen, Secale cereale L. Theor Appl Genet 43:83–87
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Communicated by F. Mechelke
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Jung, C., Lelley, T. Genetic interactions between wheat and rye genomes in triticale. Theoret. Appl. Genetics 70, 427–432 (1985). https://doi.org/10.1007/BF00273750
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DOI: https://doi.org/10.1007/BF00273750