Assessment of the impact of mid-season late blight infection on disease development and yield of potato variety Russet Norkotah in Maine

2002 ◽  
Vol 48 (2) ◽  
pp. 139-146 ◽  
Author(s):  
O. M. Olanya ◽  
D. H. Lambert ◽  
S. B. Johnson ◽  
J. D. Dwyer
Keyword(s):  
Late Blight ◽  
Potato Variety ◽  
Disease Development ◽  
Russet Norkotah ◽  
The Impact

scholarly journals The effectiveness of a new biological product Spud on the basis of Bacillus subtilis in the cultivation of potatoes

2019 ◽  
pp. 8-14
Author(s):  
Marina Konstantinovna Derevyagina ◽  
Svetlana Viktorovna Vasilyeva ◽  
Grigory Leonidovich Belov ◽  
Vladimir Nikolaevich Zeyruk ◽  
Irina Igorevna Novikova
Keyword(s):  
Late Blight ◽  
Disease Development ◽  
Dry Rot ◽  
Potato Blight ◽  
Potato Plants ◽  
Moderate Disease ◽  
Rhizoctonia Disease ◽  
The Impact ◽  
Fungistatic Effect ◽  
New Crop

It is shown the efficiency of the application of preparative forms (dry and liquid) of Kartofin during the growing season 2016-2018 years against major diseases of potatoes and the impact on the growth and development of culture. Biopreparation possesses high fungistatic effect, protecting potato plants against rhizoctonia disease, potato blight and late blight under field conditions and tubers of the new crop from dry rot. In years of low and moderate disease development, the effectiveness of the studied Potato biopreparation on the Sante variety was at the level of the reference chemical variant, equally reducing the distribution and degree of disease development. In the years of epiphytotic disease development fungistatic effect of the biopreparation was inferior in efficiency to chemical fungicides, but had a significant protective effect compared to the control, reducing the distribution of rhizoctonia disease by 22.5%, potato blightby 20.7%, late blight by 12.8% on average. The results of tuberous analyses after harvesting showed a decrease in the percentage of tuber damage by dry rot in variants with Kartofin (1.7 and 1.4%). The yield of the standard potatoes after application of Kartofin was slightly higher than in the control – by  5.1–7.7%.

scholarly journals Clonal approaches to understanding the impact of mutations on hematologic disease development

Blood ◽  
2019 ◽  
Vol 133 (13) ◽  
pp. 1436-1445 ◽  
Author(s):  
Jyoti Nangalia ◽  
Emily Mitchell ◽  
Anthony R. Green
Keyword(s):  
Somatic Mutations ◽  
Clonal Selection ◽  
Single Cells ◽  
Driver Mutations ◽  
Great Promise ◽  
Tumor Evolution ◽  
Disease Development ◽  
Hematopoietic Tissue ◽  
The Impact

Abstract Interrogation of hematopoietic tissue at the clonal level has a rich history spanning over 50 years, and has provided critical insights into both normal and malignant hematopoiesis. Characterization of chromosomes identified some of the first genetic links to cancer with the discovery of chromosomal translocations in association with many hematological neoplasms. The unique accessibility of hematopoietic tissue and the ability to clonally expand hematopoietic progenitors in vitro has provided fundamental insights into the cellular hierarchy of normal hematopoiesis, as well as the functional impact of driver mutations in disease. Transplantation assays in murine models have enabled cellular assessment of the functional consequences of somatic mutations in vivo. Most recently, next-generation sequencing–based assays have shown great promise in allowing multi-“omic” characterization of single cells. Here, we review how clonal approaches have advanced our understanding of disease development, focusing on the acquisition of somatic mutations, clonal selection, driver mutation cooperation, and tumor evolution.

COMPARISON ESTIMATION OF A POTATOES HYBRIDS IN ECOLOGICAL TEST

1970 ◽  
pp. 25-27
Author(s):  
O. N. Bashlakova ◽  
N. F. Sintsova
Keyword(s):  
Late Blight ◽  
Potato Variety ◽  
Selection Process ◽  
New Potato Variety ◽  
North East ◽  
The North ◽  
Federal Research ◽  
Breeding Station ◽  
Final Yield ◽  
High Degree

The research was carried out in 2017-2019 at the experimental field of the North-east Federal Research Center in the nursery of ecological testing of promising potato hybrids. The aim of the study was to identify hybrids for creating a new potato variety with high early productivity and final yield, attractive appearance of tubers and a high degree of resistance to major potato diseases. As the object of research 8 potato hybrids created at the Falenskaya breeding station — FGBNU FANC of the North-East were used: 27-07 (165-00 x 282-97), 62-08 (9326-2 x Zhukovsky early), 90-09 (194-00 x 45-7-17), 109-11 (183-05 x Dina), 170-08 (Sierra x 93.14-99), 172-11 (59-6-33 x Lazar), 179-10 (Dina x 45-7-17), 455-08 (591m-62 x Dubrava). As a standard was used the Nevsky potato variety zoned in the territory of the Kirov region. The evaluation of potato hybrids was carried out according to the guidelines for the technology of potato selection process: phenological observations, plant productivity on the 65th day from planting, final yield. The numbers 90-09, 170-08 and 179-10 with an early yield of 16.4-17.2 t/ha, an adaptability coefficient higher than 1 and a high degree of resistance to late blight were distinguished by the set of features.

Commentary on ‘Resveratrol commonly displays hormesis: Occurrence and biomedical significance’

2010 ◽  
Vol 29 (12) ◽  
pp. 1032-1033 ◽  
Author(s):  
Jette F Young ◽  
Sumangala Bhattacharya
Keyword(s):  
Oral Administration ◽  
Matrix Effects ◽  
Disease Models ◽  
Disease Development ◽  
Food Matrix ◽  
Positive Effects ◽  
The Impact ◽  
Lead Article ◽  
Hormetic Response ◽  
French Paradox

The lead article ‘‘Resveratrol commonly displays hormesis: occurrence and biomedical significance’’ underlines the hormetic response of resveratrol in many disease models. This commentary suggests that the greatest potential advantage of the positive effects of resveratrol for the broad population would be as prevention of disease development through oral administration in its original food matrix, although it still remains important to investigate the extent of resveratrol administration giving maximum beneficial effect for biomedical purposes. In relation to resveratrol ‘‘supplementation’’ through its natural environment further investigation of the impact of co-occurring bioactive compounds and matrix effects on hormetic responses of resveratrol is necessary for revealing mechanisms behind e.g. the ‘‘French paradox’’.

Potato Variety Tolerance to Flumioxazin and Sulfentrazone

2005 ◽  
Vol 19 (3) ◽  
pp. 683-696 ◽  
Author(s):  
Pamela J. S. Hutchinson ◽  
Rick A. Boydston ◽  
Corey V. Ransom ◽  
Dennis J. Tonks ◽  
Brent R. Beutler
Keyword(s):  
Potato Variety ◽  
Field Studies ◽  
Russet Burbank ◽  
Ranger Russet ◽  
Russet Norkotah ◽  
Early Injury ◽  
Russet Burbank Tuber ◽  
Initial Injury ◽  
Growing Conditions ◽  
Significant Injury

Field studies were conducted at Aberdeen, ID; Ontario, OR; and Paterson, WA, to evaluate potato tolerance to flumioxazin and sulfentrazone. In ‘Russet Burbank’ tolerance trials conducted in 2000 at ID, OR, and WA, sulfentrazone applied preemergence (PRE) at rates ranging from 105 to 280 g ai/ha caused significant injury consisting of stunting, leaf discoloration-blackening, and/or leaf malformation-crinkling at 4 wk after treatment (WAT). By 12 WAT, injury was ≤5%. At 4 WAT, flumioxazin applied PRE at 105 and 140 g ai/ha resulted in injury, whereas 53 g ai/ha did not cause significant injury. At 12 WAT, no visual injury was present at the ID site, whereas flumioxazin at 140 g/ha was still causing injury in WA. Regardless of initial injury, Russet Burbank tuber yields at ID, OR, and WA were not reduced as a result of any flumioxazin or sulfentrazone treatment compared with the nontreated controls. In potato variety tolerance trials conducted at ID in 2000 and at WA in 2002 with Russet Burbank, ‘Ranger Russet’, ‘Russet Norkotah’, and ‘Shepody’ and at ID in 2002 with those varieties plus ‘Alturas’ and ‘Bannock Russet’, early season injury caused by flumioxazin or sulfentrazone applied PRE at rates as high as 210 g ai/ha or 280 g/ha, respectively, occurred, but variety tuber yields were not reduced compared with nontreated control yields. In contrast, at ID in 2001, early injury caused by flumioxazin or sulfentrazone applied PRE at 105 or 210 g/ha translated to tuber yield reductions of all six varieties tested compared with the nontreated controls. At WA in 2001, Ranger Russet tuber yields were reduced by PRE applications of flumioxazin at 53 to 140 g/ha or sulfentrazone at 105 to 280 g/ha, and Shepody total tuber yields were reduced by all rates of PRE-applied sulfentrazone. Russet Burbank and Russet Norkotah tuber yields were unaffected by either herbicide. Unusual heat stress occurring early in the 2001 growing season at both locations may have compounded the effects of herbicide injury and, consequently, tuber yields were reduced in 2001, whereas injury occurring in 2000 or 2002 during relatively normal growing conditions did not translate to yield reductions.

scholarly journals Protection of Susceptible Potato Cultivars Against Late Blight in Mixtures Increases with Decreasing Disease Pressure

2006 ◽  
Vol 96 (7) ◽  
pp. 777-783 ◽  
Author(s):  
F. Pilet ◽  
G. Chacón ◽  
G. A. Forbes ◽  
D. Andrivon
Keyword(s):  
Late Blight ◽  
Potato Cultivar ◽  
Progress Curve ◽  
Late Blight Disease ◽  
Natural Pressure ◽  
Blight Disease ◽  
Disease Pressure ◽  
Moderately Resistant ◽  
The Impact ◽  
Cultivar Mixtures

Cultivar mixtures can reduce potato late blight severity on susceptible cultivars. While alternating rows of susceptible and resistant cultivars would be more acceptable than random mixtures for commercial use, they increase the genotype unit area, which is an unfavorable factor for mixture efficiency, and have been minimally efficient when disease pressure is high. The effects of disease pressure on the performance of alternating rows of cultivars possessing various types and levels of resistance were investigated in 2000 and 2001 near Quito, Ecuador, where natural pressure of late blight is high. The experiments included the highly susceptible cvs. Cecilia in 2000 and LBr37 in 2001, as well as C114 (moderately resistant) and PAN (highly resistant), planted as pure stands and as the three possible two-way combinations. Different disease pressures were obtained with three spraying schedules of a contact fungicide: nontreated, one spray every second week, and one spray weekly. The area under the disease progress curve (AUDPC) on the susceptible cultivar was 0 to 20% less in mixed than in pure plots when no fungicide was applied, 13 to 26% less with a biweekly application of fungicide, and 32 to 53% less with a weekly application. These values are comparable to those obtained in previous experiments in smaller plots with designs maximizing the distance between susceptible plants. No significant differences in mixture performance were observed according to the resistant cultivar included. Effects on yield were minimal, because of the impact of factors other than late blight. Disease pressure therefore appears as a major factor conditioning the efficiency of potato cultivar mixtures against late blight.

Light-induced alteration of leaf sterol content and late blight disease development in tomato

1982 ◽  
Vol 60 (12) ◽  
pp. 2724-2728 ◽  
Author(s):  
B. Bradford ◽  
L. D. Moore ◽  
D. M. Orcutt
Keyword(s):  
Light Intensity ◽  
Late Blight ◽  
Disease Incidence ◽  
Total Sterol ◽  
Disease Development ◽  
Low Light ◽  
Light Intensities ◽  
Intensity Changes ◽  
Late Blight Disease ◽  
Blight Disease

‘Nova’ and 'Beefsteak,' cultivars of tomato (Lycopersicon esculentum Mill.), were grown in chambers under light intensities of 240 or 120 μE∙m−2∙s−1. Thirty-five days after seeding, half of the tomato plants were harvested for sterol analysis and the others were inoculated with a tomato race O isolate of Phytophthora infestons (Mont.) de By. Late blight symptoms were assessed 10 days after inoculation from the number of leaves showing disease (disease incidence) and the amount of blighted area of each leaf (percent colonization). Disease incidence and percent colonization were not influenced by light intensity with 'Nova' plants, but 'Beefsteak' plants grown under low light were significantly [Formula: see text] more diseased than those exposed to the higher light intensity. Changes in free sterol, steryl ester, and total sterol concentrations between plants grown under different light intensities were similar for both cultivars. A significant decrease in the steryl glycoside concentration of low light grown 'Beefsteak' plants correlated with increased disease incidence. The possible role of steryl glycosides and their derivatives in late blight disease development is discussed.

scholarly journals Late Blight of Potato and Tomato

EDIS ◽  
2013 ◽  
Vol 2013 (1) ◽  
Author(s):  
Ryan Donahoo ◽  
Pamela Roberts
Keyword(s):  
Plant Pathology ◽  
Late Blight ◽  
Disease Development ◽  
Fact Sheet ◽  
Aggressive Disease ◽  
Late Blight Of Potato

Both potato and tomato are susceptible to late blight, an aggressive disease capable of rapidly destroying entire fields. The disease is distributed worldwide and occurs wherever tomatoes or potatoes are grown, and conditions favor disease development. This 4-page fact sheet was written by Ryan Donahoo and Pamela Roberts, and published by the UF Department of Plant Pathology, December 2012. http://edis.ifas.ufl.edu/pp301

scholarly journals Participatory potato (solanum tuberosum l.) variety development in Ethiopia. A review

2019 ◽  
Vol 7 (1) ◽  
pp. 61-75
Author(s):  
Getachew E. Gemechu
Keyword(s):  
Disease Resistance ◽  
Late Blight ◽  
Potato Variety ◽  
Solanum Tuberosum L ◽  
Research Result ◽  
Innovation System ◽  
High Yield ◽  
Southern Ethiopia ◽  
Market Demand ◽  
Tigray Region

Participatory potato variety development includes the identification of the main components, participants and stakeholders, their roles, types of interactions and constraints identified in the system. Some research result indicate that, there is a less complex potato innovation system was observed at the plot site of Ethiopia and a more complex and dynamic system was observed in the case of Peru. Many Achievements were gained by participatory potato variety development in different part of Ethiopia. In southern Ethiopia, Umbulowach, Hawassa Zuria Wereda of Sidama Zone; Marachere variety was preferred by farmers for its excellent response in yield and other traits. In Tigray region of Atsbi woreda, from seven varieties three best performing varieties:  Jalene, Gera, and Gudene were selected for their disease resistance and other quality traits. In North-western Ethiopia, With aid of CASCAPE project in South Achefer, Burie and Jabitehenan Districts, Belete variety was selected for its superior yield, disease and insect tolerance; In West shewa, at Jeldu, Dendi, Wolmera and Degem district, both Farmers Field School (FFS) and Farmers research Group (FRG) were established and a chances were given Farmers to select potato clones suitable to their conditions based on late blight disease resistance and yield.  As    a result, farmer’s ranked as 1st, a potato clone CIP–392650.516 which is the highest yielder and late blight resistant among the tested clones); in Jimma area kersa (serbo), Seka Chekorsa and Dedo Districts, Farmers select Abalolarge 1 st, abateneh 2 nd and Gudane 3 rd as three high yielder variety and in Jimma and Illuababora zone area, variety “Guasa” was selected due to its earliness, high yield advantage and market demand.

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