anale 5.pdf

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în sortimentul de soiuri. Manuscris.
FILIPPOV, A. S., 1964, Virusnîe bolezni kartofelea i 7lw1'î borbî s nimimetodami
selektii priemami semenovodstva i agro'tehniki. O degeneraci brambor, Praga.
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M w Polsce. Postepy Nauk Rolnkzych 1, (61).
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X, S şiM ale cartofului. Analele Secţiei de Protecţia plantelor. 1'1.
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of the PhytopathoJogieal Soeiety of Japan, 35, 1.
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brambor. Praga.
KAMERAZ, A. J., IIVANOVA, V. N., 1965, Ishodnîi ma'terial dlia selekţii kartofelea
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selekţii, XXXVII, 3.
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Zapis. Leningrad S.h. Inst. Ovoscevod. Kartofelevod. 106.
MACLEOD, D. J., 1962, Mosaic and streak viruses of the potato. Publication 1150,
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ZADINA, J., 1964, Selechteni bramboru na vzdornost proti virum v CSSR. O degeneraei
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ZADINA, J., 1970, Rozsireni virus M u odrud svetoveho sor'timentu brambor.
Rostlinna vyroba, 16 (XLIII).
BEHAVIOUR OF CERTAIN TUBIFEROUS SPECIES OF SOLANUM L GENUS
HY'PlERBASA'.R!TIHRUM BITIT. SUBSEGTiION AGrAiI'NS'T TIRE INFECiT:ION
WITH POTATO VIRUS M
SUMMARY
Over 16,500 genotypes belonging to 295 parental forms originating from 68
species of Solanum genus distributed in 10 taxonomix serries, were tested for
their resistance ta potato virus M, during 1970-1971. A numbe1' of 40-100 genotypes
were inoculated in case of each parental form. An isolate of potato virus lVI
obtained from Oslava variety, and p1'opagated an tomato plants, was used in inoculations.
Two inoculations were performed Le. one by help of an inoeulation
gunant the othe1' by help of a spatula. Infection was controled by the method of
serologie precipitation on slides. Infected genotypes were discovered in aH of the
parental forms, the great majority showing an incidence of over 50 0/ 0 • No highly
resistant genes were evidenced in an of the studied parental forms.. In certain
parental forms bruonging to the S. garciae, S. commersonii, S. gibberulosum, S. pa­
TOdii. S tarijense, S. sanctae-rose, S. simplificolium, S. andigena and S. subandigena
speeies, the ineidence of infected genotypes p1'oved to be reduced (under 250/0).
It is evident that these genotypes possess certain resistance faetlOrs, but the 1'esistance
type of the plant material used in the work eould not be established.