EFFECT OF PLASTIC COVERING METHOD ON THE INFECTION OF SOME CULTIVAR OF TOMATO ( Lycopersicon esculentum Mill ) TO EARLY BLIGHT DISEASE CAUSED BY Alternaria solani AT DESERT AREA OF BASRAH CITY

2007 ◽  
Vol 20 (1) ◽  
pp. 36-62
Author(s):  
Essam H. A. Al-Doghachi Faisal A.R. Al-Refai ◽  
Wageiha M. Essa
Keyword(s):  
Lycopersicon Esculentum ◽  
Early Blight ◽  
Alternaria Solani ◽  
Desert Area ◽  
Lycopersicon Esculentum Mill ◽  
Covering Method ◽  
Blight Disease

scholarly journals EVALUATION OF TWO DISEASE FORECASTING SYSTEMS FOR CONTROLLING EARLY BLIGHT ON TOMATO IN NEW JERSEY.

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 629e-629
Author(s):  
W.P. Cowgill ◽  
M.H. Maletta ◽  
S.A. Johnston
Keyword(s):  
New Jersey ◽  
Lycopersicon Esculentum ◽  
Disease Control ◽  
Early Blight ◽  
Alternaria Solani ◽  
Disease Forecasting ◽  
State University ◽  
Pennsylvania State University ◽  
Cornell University ◽  
Lycopersicon Esculentum Mill

Two disease forecasting systems - FAST, Pennsylvania State University and CUFAST, Cornell University - were used to generate spray schedules for controlling Alternaria solani Ell. and Mart. on `Celebrity' tomato (Lycopersicon esculentum Mill.) at The Rutgers Snyder Research and Extension Farm in Northwest New Jersey. Disease control was compared to that obtained following standard weekly spray schedules. Chlorothalonil, 1.5 lb/A, was used for disease control for all treatments. Disease ratings of the FAST and CUFAST plots were significantly lower than that of the unsprayed control and were not significantly different from the plots sprayed according to standard spray schedules. A total of 10 fungicide applications were made following FAST recommendations; 7 applications were made following CUFAST recommendations; 13-15 applications were made following standard recommended schedules. Using CUFAST resulted in an estimated $200 per acre savings in spray costs. Chemical name used: tetrachloroisophtalonitrile (chlorothalonil).

Evaluation of tomato genotypes for early blight disease resistance caused by Alternaria solani in Pakistan

2019 ◽  
Vol 101 (4) ◽  
pp. 1159-1170
Author(s):  
Khalid Pervaiz Akhtar ◽  
Najeeb Ullah ◽  
Muhammad Yussouf Saleem ◽  
Qumer Iqbal ◽  
Muhammad Asghar ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Early Blight ◽  
Alternaria Solani ◽  
Blight Disease ◽  
Tomato Genotypes

scholarly journals Greenhouse Disease Screen Facilitates Breeding Resistance to Tomato Early Blight

HortScience ◽  
1990 ◽  
Vol 25 (2) ◽  
pp. 222-223 ◽  
Author(s):  
Randokh G. Gardner
Keyword(s):  
Lycopersicon Esculentum ◽  
Field Trial ◽  
Early Blight ◽  
Alternaria Solani ◽  
Blight Resistance ◽  
Stem Lesion ◽  
Foliar Resistance

An F2 population segregating for tomato (Lycopersicon esculentum Mill.) early blight resistance derived from C1943 was screened in the greenhouse by spray-inoculating conidia of Alternaria solani (Ellis and Martin) Jones and Grout onto stems of 6-week-old seedlings. Selected F3 lines derived from F2 plants with resistant, intermediate, and susceptible stem lesion reactions were grown in a replicated field trial and evaluated for foliar early blight resistance. Stem lesion and foliar resistance were closely associated, making the greenhouse screen for stem lesion resistance useful in identifying plants with foliar resistance.

scholarly journals Inheritance of Resistance to Early Blight Disease in Tetraploid × Diploid Crosses of Potatoes

HortScience ◽  
1990 ◽  
Vol 25 (2) ◽  
pp. 224-226 ◽  
Author(s):  
A.B. Herriott ◽  
F.L. Haynes ◽  
P.B. Shoemaker
Keyword(s):  
Partial Correlation ◽  
Early Blight ◽  
Alternaria Solani ◽  
Inheritance Of Resistance ◽  
Narrow Sense ◽  
Narrow Sense Heritability ◽  
Breeding Lines ◽  
Blight Disease ◽  
Different Levels ◽  
Partial Correlation Coefficient

Heritability of resistance to early blight disease in potatoes (Solarium tuberosum L.) incited by Alternaria solani (En. & Martin) Ser. was estimated in tetraploid × diploid crosses. Susceptible tetraploid cultivars and breeding lines were the female parents. Diploids that produced a high proportion of first-division restitution (FDR) gametes and possessed different levels of early blight resistance were the male parents. Tubers from seedlings that resulted from the tetraploid × diploid crosses were planted in a field and artificially inoculated with spores of Alternaria solani. Resistance was measured as the slope (r) of the regression of the logit of the percent defoliation of each plant vs. time. Higher r values indicated lower resistance. Mean r values ranged from 0.123 to 0.157 for the tetraploid parents, and from 0.054 to 0.116 for the diploid parents. Mean r values for the tetraploid × diploid crosses were intermediate, ranging from 0.077 to 0.143. Narrow-sense heritability (h2) was 0.815. The partial correlation coefficient between r and mean maturity values was – 0.2086.

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