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The reactions of Beta procumbens C.Sm. and Beta webbiana Moq. were compared to those of Beta vulgaris L. with regard to an infection by Cercospora beticola Sacc. The fleckreaction observed in B. webbiana may be interpreted as hypersensitvity based on symptomatological, light microscopical, luorescent microscopical and electron microscopical data. The B. procumbens clone was found to show resistance characteristics similar to those of B. webbiana and B. vulgaris, as it reacted both by flecks (B. webbiana) and leaf spots (B. vulgaris) to a C. beticola infection.
SUMMARY Four sugar beet cultivars exhibiting increasing levels of rate-reducing resistance towards Cercospora beticola ('Cyrano' or 'Univers', 'Bushel', 'Monodoro', and 'Break') were used in monocyclic infection experiments to study the following resistance components: incuba- tion length (IP, the degree-day cumulation, base 5°C, during the time between inoculation and appearance of spots), infection efficiency of conidia (INF, the number of necrotic spots per cm2 of leaf at the end of a single in- fection cycle), and lesion size (LS, the area of single spots). All the resistance components were influenced by cultivar significantly; whereas no differences in lesion type were found. Resistance delayed the appearance of spots by a maximum of 12 days compared to the sus- ceptible cultivar. IP50 was delayed by a degree-day cu- mulation of 28°C, 60°C and 100°C in 'Bushel', 'Mono- doro', and 'Break', respectiv...
2000 •
SUMMARY Four sugar beet cultivars exhibiting increasing levels of rate-reducing resistance towards Cercospora beticola ('Cyrano', 'Bushel', 'Monodoro', and 'Break') were used to study two resistance components: length of conidiation period (CP, the time required to produce conidia on the spots incubated under optimal condi- tions for sporulation) and spore yield (SY, the number of conidia yielded per cm 2 of
International Journal of Current Microbiology and Applied Sciences
Efficacy of Bio Resources on Management of Cercospora Leaf Spot in Beetroot (Beta vulgaris L.)2020 •
Beetroot (Beta vulgaris L.) also known as table beet, garden beet and sugar beet it is one of the major root vegetable. Belongs to the family Chenopodiaceace. It produces green tops and swollen roots both used as a vegetable. It is a rich source of carbohydrate, calcium and vitamin C (Deuter and Grundy, 2004). Red color of roots is due to the presence of betanine pigment. International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 9 Number 11 (2020) Journal homepage: http://www.ijcmas.com
Journal of Plant Protection and Pathology
SYSTEMIC RESISTANCE IN SUGAR BEET ELICIATED BY NON-PATHOGENIC, PHYLLOSPHERE-COLONIZING Bacillus pumilus AND B. subtilus AGAINST THE PATHOGEN Cercospora beticola Sacc2011 •
Research Square (Research Square)
The Inhibitory Effect of Haloxylon, Cichorium spp and Capparis spp on Cercospora leaf spot disease on sugar beet in vitro and vivo2022 •
G3 (Bethesda, Md.)
Identification and Precise Mapping of Resistant QTLs of Cercospora Leaf Spot Resistance in Sugar Beet (Beta vulgaris L.)2011 •
The complex inheritance of resistance to Cercospora leaf spot (CLS), the most severe fungal foliar disease in sugar beet, was investigated by means of quantitative trait loci (QTL) analysis. Over a three year period, recombinant inbred lines (RILs) of sugar beet (Beta vulgaris L.), generated through a cross between lines resistant ('NK-310mm-O') and susceptible ('NK-184mm-O') to CLS, were field-tested for their resistance to the pathogen. Composite interval mapping (CIM) showed four QTL involved in CLS resistance to be consistently detected. Two resistant QTL (qcr1 on chromosome III, qcr4 on chromosome IX) bearing 'NK-310mm-O' derived alleles promoted resistance. Across 11 investigations, the qcr1 and qcr4 QTL explained approximately 10% and over 20%, respectively, of the variance in the resistance index. Two further QTL (qcr2 on chromosome IV, qcr3 on chromosome VI) bearing 'NK-184mm-O' derived alleles each explained about 10% of the variance. To ide...
Crop Protection
Comparison of two disease assessment methods for assessing Cercospora leaf spot in sugar beet2003 •
2008 •
Cercospora beticola survives as stromata in infected crop residue. Spores produced on these survival structures serve as primary inoculum during the next cropping season. This study was conducted to determine how long C. beticola can survive at different soil depths, the mechanism of inoculum dispersal, and the primary infection site in sugar beet. Longevity of C. beticola was studied over a 3-year period under field conditions at Fargo, ND. C. beticola-infected leaves were placed at depths of 0, 10, and 20 cm and retrieved after 10, 22, and 34 months. Survival of C. beticola inoculum declined with time and soil depth. Inoculum left on the soil surface, 0 cm in depth, survived the longest (22 months) compared with that buried at 10 cm (10 months) and 20 cm (10 months). C. beticola dispersal from the primary source of inoculum was studied in the field for three growing seasons. Sugar beet plants were surrounded with plastic cages with and without ground cover, or exposed with and wit...
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