Modern notions about the pollen sterility in the vine and methods for overcoming it
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TOPALE, Stefan, ROYCHEV, Venelin. Modern notions about the pollen sterility in the vine and methods for overcoming it. In: Bulgarian Journal of Agricultural Science, 2021, nr. 5(27), pp. 903-910. ISSN 1310-0351.
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Bulgarian Journal of Agricultural Science
Numărul 5(27) / 2021 / ISSN 1310-0351

Modern notions about the pollen sterility in the vine and methods for overcoming it


Pag. 903-910

Topale Stefan1, Roychev Venelin2
 
1 National Botanical Garden (Institute) "Alexandru Ciubotaru",
2 Universitatea Agrară, Plovdiv
 
 
Disponibil în IBN: 2 decembrie 2021


Rezumat

As a result of palynological, cytogenetic and scanning electron microscopy examinations, eight types of pollen sterility in the vine have been identified related to the reasons for their occurrence: genetic; chromosomal; meiotic; genomic; chromo-somal-genetic; chromosomal-genomic; polyploid and total. In the distant hybrids of F3-F5 generations, all genotypic variants of pollen sterility are observed – from partially fertile to semi-fertile and form with normally restored fertility and vitality. As the number of generations increases, the number of self-fertile forms increases and the number of sterile ones decreases sig-nificantly. A DRX-M3-2 seedling with chromosomal sterility of the two gametophytes was found in F3, in which no grains or seeds were formed, regardless of the pollination method. By crossing distant hybrids of F3 with 2n=38 with S.V.-12-309 and S.V.-20-366, F4 generation was obtained, in which DRX-M4-501,502,503, etc., are fruiting, partially fruiting and infertile with 2n=38, 39. From the crossing of the distant hybrids of F4 – DRX-M4-520, DRX-M4-510 (2n=38) with the cultivars GM-325-58, Cristal and Moldova, F5 generation was created, in a population of which four artificially created species carrying the new vine genome with n=19, 2n=38, which includes the chromosomes of Vitis vinifera and V. rotundifolia. 

Cuvinte-cheie
classification, Cytogenetic and scanning electron microscopy examinations, Distant hybridization in F1-F5 generations, Palynolog-ical, Types of pollen sterility in the vine