In Vitro Testing of Rose Rootstocks Resistance to Crown Gall Disease.

Accession number;00A0454434
Title;In Vitro Testing of Rose Rootstocks Resistance to Crown Gall Disease.
Author; ZHOU L (Gifu Univ., Gifu) SUZUKI K (Gifu Univ., Gifu) NARUSE T (Gifu Univ., Gifu) FUKUI H (Gifu Univ., Gifu) MATSUMOTO S (Gifu Univ., Gifu) KAGEYAMA K (Gifu Univ., Gifu)
Journal Title;Journal of the Japanese Society for Horticultural Science
Journal Code:F0626A
ISSN:0013-7626
VOL.69;NO.2;PAGE.171-175(2000)
Figure&Table&Reference;FIG.2, TBL.3, REF.16
Pub. Country;Japan
Language;English
Abstract;Flfteen rose rootstocks which were cultured and propagated in vitro were inoculated with the strain GOU1 of Agrobacterium tumefaciens as a test for resistance to the crown gall disease. Rosa multiflora and R. multiflora 'K2' were highly susceptible, 95% and 90% of the stems forming large tumors, 6.61 and 3.62 (mm*mm), respectively. Three varieties of R. canina, 'Pfaender', 'Superbe', and 'Broegs Stachellose', and a native one became infected but formed small tumors (0.5mm*mm). In R. rugosa and R. canina 'Superbe' 40% of the infected shoots formed tumors during the first week after inoculation. Thus, these species have a low resistance to tumor formation, whereas R. virginiana formed no tumor during the first week after inoculation; 73% of the shoots produced tumors 3 weeks after inoculation. Therefore, R. virginiana is subject to infection but resistant to tumor formation. (author abst.)
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