Creation and study of emmer (<i>Triticum dicoccum</i>) × triticale hybrids
Triticale (× Triticosecale Wittmack) is of great interest as an insurance crop that can ensure the stability of the gross harvest of feed and food grains at a lower cost. In Western Siberia, only winter triticale varieties are cultivated, however, spring triticales are important for cultivation in r...
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Siberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and Breeders
2023-07-01
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| Series: | Вавиловский журнал генетики и селекции |
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| Online Access: | https://vavilov.elpub.ru/jour/article/view/3770 |
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| author | O. G. Silkova Y. N. Ivanova P. I. Stepochkin |
| author_facet | O. G. Silkova Y. N. Ivanova P. I. Stepochkin |
| author_sort | O. G. Silkova |
| collection | DOAJ |
| description | Triticale (× Triticosecale Wittmack) is of great interest as an insurance crop that can ensure the stability of the gross harvest of feed and food grains at a lower cost. In Western Siberia, only winter triticale varieties are cultivated, however, spring triticales are important for cultivation in regions not suitable for winter crops. To create spring varie ties with high yields and good grain quality, it is necessary to study and enrich the gene pool, identify donors of economically valuable traits. One of the possible ways to solve this problem can be through the production of secondary hexaploid triticales with the involvement of the tetraploid wild-growing species of emmer wheat Triticum dicoccum (Schrank) Schuebl. The aim of this work was to create and study hybrids of emmer T. dicoccum (Schrank) Schuebl. with hexaploid triticale using genomic in situ hybridization for staining of meiotic chromosomes and analysis of plant productivity elements in F4–F8. DT4, DT5, DT6 plants and the prebreeding F6 forms obtained from them – DT 4/168, DT 5/176 and DT 6/186 – were selected according to the characteristics of the productivity and the nature of the grain in the F4 hybrid population. The offspring of hybrids DT4 and DT5 and prebreeding forms DT 4/168 and DT 5/176 had an increased grain nature (over 750 g/l), but low productivity. The hybrid DT6 and the breeding form DT 6/186 obtained from it had high grain productivity (785 ± 41 and 822 ± 74 g/m2, respectively), but, like the paternal form of triticale UK 30/33, had a reduced nature of the grain. In F8 DT 6/186 plants, 7 homologous pairs of rye chromosomes and from 27 to 30 wheat chromosomes were found in meiosis, which indicates the presence of a complete rye genome and two wheat ААВВ genomes. Rye chromosomes showed stable formation of bivalents in contrast to wheat chromosomes, which caused the presence of aneuploids in plant populations. Thus, hexaploid forms DT 4/168 and DT 5/176 with well-made smooth grain and high grain size were obtained, which can be used as a source of this trait for selection of food-grade triticale. DT 6/186 is a promising form for further breeding in order to obtain high-yielding forms of triticale. |
| format | Article |
| id | doaj-art-25792c015ad0495b815ef07b18df96c1 |
| institution | Kabale University |
| issn | 2500-3259 |
| language | English |
| publishDate | 2023-07-01 |
| publisher | Siberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and Breeders |
| record_format | Article |
| series | Вавиловский журнал генетики и селекции |
| spelling | doaj-art-25792c015ad0495b815ef07b18df96c12025-02-01T09:58:12ZengSiberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and BreedersВавиловский журнал генетики и селекции2500-32592023-07-0127432333210.18699/VJGB-23-391357Creation and study of emmer (<i>Triticum dicoccum</i>) × triticale hybridsO. G. Silkova0Y. N. Ivanova1P. I. Stepochkin2Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of SciencesInstitute of Cytology and Genetics of the Siberian Branch of the Russian Academy of SciencesSiberian Research Institute of Plant Production and Breeding – Branch of the Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of SciencesTriticale (× Triticosecale Wittmack) is of great interest as an insurance crop that can ensure the stability of the gross harvest of feed and food grains at a lower cost. In Western Siberia, only winter triticale varieties are cultivated, however, spring triticales are important for cultivation in regions not suitable for winter crops. To create spring varie ties with high yields and good grain quality, it is necessary to study and enrich the gene pool, identify donors of economically valuable traits. One of the possible ways to solve this problem can be through the production of secondary hexaploid triticales with the involvement of the tetraploid wild-growing species of emmer wheat Triticum dicoccum (Schrank) Schuebl. The aim of this work was to create and study hybrids of emmer T. dicoccum (Schrank) Schuebl. with hexaploid triticale using genomic in situ hybridization for staining of meiotic chromosomes and analysis of plant productivity elements in F4–F8. DT4, DT5, DT6 plants and the prebreeding F6 forms obtained from them – DT 4/168, DT 5/176 and DT 6/186 – were selected according to the characteristics of the productivity and the nature of the grain in the F4 hybrid population. The offspring of hybrids DT4 and DT5 and prebreeding forms DT 4/168 and DT 5/176 had an increased grain nature (over 750 g/l), but low productivity. The hybrid DT6 and the breeding form DT 6/186 obtained from it had high grain productivity (785 ± 41 and 822 ± 74 g/m2, respectively), but, like the paternal form of triticale UK 30/33, had a reduced nature of the grain. In F8 DT 6/186 plants, 7 homologous pairs of rye chromosomes and from 27 to 30 wheat chromosomes were found in meiosis, which indicates the presence of a complete rye genome and two wheat ААВВ genomes. Rye chromosomes showed stable formation of bivalents in contrast to wheat chromosomes, which caused the presence of aneuploids in plant populations. Thus, hexaploid forms DT 4/168 and DT 5/176 with well-made smooth grain and high grain size were obtained, which can be used as a source of this trait for selection of food-grade triticale. DT 6/186 is a promising form for further breeding in order to obtain high-yielding forms of triticale.https://vavilov.elpub.ru/jour/article/view/3770triticale<i>triticum dicoccum</i>wide hybridsgenomic <i>in situ</i> hybridizationproductivity traitsmeiosisprebreeding forms |
| spellingShingle | O. G. Silkova Y. N. Ivanova P. I. Stepochkin Creation and study of emmer (<i>Triticum dicoccum</i>) × triticale hybrids Вавиловский журнал генетики и селекции triticale <i>triticum dicoccum</i> wide hybrids genomic <i>in situ</i> hybridization productivity traits meiosis prebreeding forms |
| title | Creation and study of emmer (<i>Triticum dicoccum</i>) × triticale hybrids |
| title_full | Creation and study of emmer (<i>Triticum dicoccum</i>) × triticale hybrids |
| title_fullStr | Creation and study of emmer (<i>Triticum dicoccum</i>) × triticale hybrids |
| title_full_unstemmed | Creation and study of emmer (<i>Triticum dicoccum</i>) × triticale hybrids |
| title_short | Creation and study of emmer (<i>Triticum dicoccum</i>) × triticale hybrids |
| title_sort | creation and study of emmer i triticum dicoccum i triticale hybrids |
| topic | triticale <i>triticum dicoccum</i> wide hybrids genomic <i>in situ</i> hybridization productivity traits meiosis prebreeding forms |
| url | https://vavilov.elpub.ru/jour/article/view/3770 |
| work_keys_str_mv | AT ogsilkova creationandstudyofemmeritriticumdicoccumitriticalehybrids AT ynivanova creationandstudyofemmeritriticumdicoccumitriticalehybrids AT pistepochkin creationandstudyofemmeritriticumdicoccumitriticalehybrids |