| Autor: |
T. S. Osadchaya, N. V. Trubacheeva, L. A. Kravtsova, I. A. Belan, L. P. Rosseeva, L. A. Pershina |
| Jazyk: |
English<br />Russian |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Вавиловский журнал генетики и селекции, Vol 20, Iss 3, Pp 370-377 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
2500-3259 |
| DOI: |
10.18699/VJ16.165 |
| Popis: |
Anther culture is one of the methods to obtain DH lines of wheat. A limitation of this method can be cytogenetic instability in plants R0, leading to a decrease in fertility or sterility. In this study, we have investigated the fertility of R0, the fertility and cytogenetic variability of R1 in alloplasmatic introgression lines of common wheat in order to develop a cytogenetically stable DH lines with introgressions from different species. Lines 311/134, 311/FL, 311/IR with the cytoplasm from H. vulgare were studied. 311/134 carries the wheat-rye 1RS.1BL and wheatwheatgrass 7DL-7Ai translocations; 311/FL has the 1RS.1BL translocation and probably introgressions from A. glaucum; and 311/IR has the wheat-rye 1RS.1BL and wheat-Ae. speltoides T2B/2S#2 translocations. Green seedlings developed in anther culture for all lines. Differences between the lines in the ability for androgenesis and in the level of fertility in R0 and R1 have been revealed. Depressed androgenesis, low fertility and high aneuploidy were observed in 311/IR. It has been proposed that the reason for this is cytogenetic instability in gametes, which is caused by Gc genes located on T2B/2S#2. 63.3 % of 311/134 and 311/FL R1 plants that were grown from low seed-set R0 plants were aneuploids. Fertile R0 regenerant plants were identified that segregated in R1 for fertility and chromosome numbers. It has been demonstrated that DH lines are best developed from highfertility R1 plants with 2n = 42 irrespective of fertility in R0. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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