| Issue |
BIO Web Conf.
Volume 38, 2021
Northern Asia Plant Diversity: Current Trends in Research and Conservation 2021
|
|
|---|---|---|
| Article Number | 00078 | |
| Number of page(s) | 11 | |
| DOI | https://doi.org/10.1051/bioconf/20213800078 | |
| Published online | 28 October 2021 | |
Morphological markers with a triploid set of chromosomes by breeding of apple tree at the polyploid level
Ural federal agricultural research center of the Ural department of the RAS, 620142, Yekaterinburg, Russia
* Corresponding author: sirius0775@mail.ru
The results many years of research in the conditions of the Altai low mountains are given the assessment of hybrid apple populations from heterploid crosses according to the characteristics: resistance to scab, degree of culture, growth strength, stem thickness, leaf thickness, leaf index, morphometry of the graft and stipules, ploidy. The correlation was established by the studied indications with the triploid set of chromosomes of hybrids from heteroploidy’s crosses. It is shown that the cytological assessment of karyotypes selected for a complex of morphological features is required in a significantly smaller volume, and varieties of siberian selection are capable for partial formation of germ sacs with a diploid set of chromosomes. Morphological markers for apple tree selection at the polyploid level were determined by identifying seedlings in the juvenile stage with a triploid set of chromosomes inside a hybrid population. The application of morphological markers makes it possible to identify from 14 to 100% of seedlings with a triploid set of chromosomes in dependence on the original tetraploid form.
© The Authors, published by EDP Sciences, 2021
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