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Articolul precedent |
Articolul urmator |
1058 5 |
Ultima descărcare din IBN: 2022-03-07 09:25 |
Căutarea după subiecte similare conform CZU |
575:634.8 (2) |
Genetică generală. Citogenetică generală (427) |
Viticultură. Viță de vie. Vii (624) |
SM ISO690:2012 TOPALĂ, Ştefan, DADU, Constantin. Sinteza genomului nou al viţei de vie – o realizare în premieră în citogenetica speciei . In: Revista de Ştiinţă, Inovare, Cultură şi Artă „Akademos”, 2009, nr. 3(14), pp. 99-103. ISSN 1857-0461. |
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Revista de Ştiinţă, Inovare, Cultură şi Artă „Akademos” | ||||||
Numărul 3(14) / 2009 / ISSN 1857-0461 /ISSNe 2587-3687 | ||||||
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CZU: 575:634.8 | ||||||
Pag. 99-103 | ||||||
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Rezumat | ||||||
The synthesis of new genome of grapevine continued
for 137 years. The waking of synthesis has begun by
professor A.P.Wylie (1868 - 1871) in USA. Preliminary
synthesis continued for 96 years. For the first time, Professor
A. P. Wylie has crossed the species of Vitis vinifera L. with V.
rotundifolia Michx. and created hybrids of F1
. The author
underlined that hybrids are obtained only in the case, when
in quality the plant-mother are utilized Vitis vinifera L. and
plant-father Vitis rotundifolia Michx. L.R. Detjen (1919)
has crossed again Vitis rotundifolia Michx. with Vitis
vinifera L. and other species of subgenus Euvitis and also
created hybrids of F1
. After Patel and Olmo (1955), R. T.
Dunstan (1962-1964) by backcrossing N.C. - 6-16 x Black
Rose has obtained DRX-55, DRX-58-5, DRX-60-24 and
other. We proceeded on synthesizing new genome of vine
from 1980. The methods used are backcrosses of “vegetal
mule’’ - DRX-55 (2n=39) with Seyve Villard, as well as,
initial species, polyploidy forms and many varieties of V.
vinifera. Since 1983, we have obtained 4 generation of
distant hybrids at which regular meiosis and partially or
completely restoration of fertility have been. Among the
hybrids of F5
, 4 artificial species were distinguished: Vitis
vinifolia, V.rotundifera, V.cruceştiana, V.nigra. Only these
species are growing on own roots, are blossoming and are fertilizing normally because they contain a new genome
equal n=19, 2n=38, but not as at interspecifi c hybrid V.
vinifera x V.rotundifolia DRX-55 (2n=39).
The new grape genome is the basis of solving the world
problem of phyloxera. 19th
, 20th
centuries were dedicated to
fight to the phyloxera, which destroyed practically ~ 6 mln
ha of vineyard from the Europe during several decades. In
consequence of these enormous damages, there took place
a drastic break in the world viticulture – transition from
own root crop of grape (Vitis viniferaL.) to the cultivation
of vine engrafted on American parent stock resistant
to phyloxera. At present, the synthesis of the new grape
genome is, unquestionably, one of supreme scientifi c and
practical accomplishments, proving opportune possibilities
of gradual reverse transition – from the technology of
the cultivation of the engrafted vine to own root crop of
grape.
Key words: distant hybrid, vinifera, rotundifolia,
vinifolia, rotundifera, cruceştiana, nigra, backcross,
synthesis of new genome, artificial species |
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