Screening of Tomato Genotypes Against Early Blight (Alternaria Solani) by Detached Leaf Method

Lohith, M. R.; Reddy, Kirthi C.; Ramana, C. Venkata; Rao, P. Venkata; Reddy, K. R. K.; Reddy, D. L.

doi:10.17660/actahortic.2011.914.89

Cited by 4 publications

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“…The parental lines were initially been screened under the same set up during 2013-14 and were then crossed among themselves to produce eighteen hybrid derivatives. Lohith et al (2011) screened about 52 tomato genotypes by using the similar method, but employing the droplet method of inoculation instead of mycelial disc. Similarly, Fooland et.…”

Section: Resultsmentioning

confidence: 99%

“…This disease, in severe cases can lead to complete defoliation inregions with heavy rainfall, high humidity, and fairly high temperatures (24°-29 °C). Epidemics can also occur in semiarid climates where frequent and prolonged nightly dews occur (Rotemand Reichert, 1964) resulting in yield loss between 15 and 100 per cent (Sohi, 1984).It may cause considerable damage to the tomato crop in northern plains and peninsular regions of India and may act as a limiting factor for its successful cultivation in these regions (Lohith et al, 2011). To develop stable resistance in a variety, source of resistance would be of prime importance and hence, different methods are used to screen tomato germplasm from different sources against early blight that involves both field and artificial evaluation.…”

Section: Introductionmentioning

confidence: 99%

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Screening a set of tomato parental lines and their hybrids for resistance to early blight (Alternaria solani) by detached leaf method

Bharathkumar

Anjanappa

et al. 2017

JANS

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Nine parental lines and 18 hybrids derived by crossing them in Line × Tester fashion were screened against the early blight pathogen Alternaria solani along with a resistant, susceptible and a commercial check in the form of Arka Rakshak, IIHR2202 and Abhinava respectively. Parental lines and the resistant and susceptible checks were screened over two seasons and results obtained were almost similar with the line IIHR1816 exhibiting resistance with the disease severity of 25 % in both the trials, while the line IIHR977 was found to be resistant in the first season with PDI of 25 % and moderately resistant in the second season with the slightest increase in the disease severity up to 25.6 %. None of the hybrids were found to be resistant except, whereas about eight hybrids were found to be moderately resistant. IIHR2892 x IIHR2853 was found to be highly susceptible with severity of 68.75 %, which is on par with the susceptible check IIHR2202 (70.50 %). The results obtained from the detached leaf method of screening should be confirmed by the field or greenhouse screening methods before using them in further breeding programmes.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Screening a set of tomato parental lines and their hybrids for resistance to early blight (Alternaria solani) by detached leaf method

Bharathkumar

Anjanappa

et al. 2017

JANS

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“…Moreover, cultivars Wardiat, Breh and Baskanta showed moderate resistance to the disease. Lohith et al (2011) were found four genotypes EC 251709, EC 251717, EC 164295 and LE 15 showed highly resistant reaction with PDI ranged from 0-10%; whereas LE 44 was resistant (PDI 10.1-25%); EC 165690, EC 163681, EC 136711, EC 163683, LE 16, LE 35, LE 54, LE 85, LE-172 and LE-189 were moderately resistant (PDI 25.1-40%). Tomato cultivars cultivated in Pakistan have low level of genetic resistance to Alternaria leaf blight disease.…”

Section: Figure4 Response Of Five Determinate Hybrids Against Early mentioning

confidence: 88%

Genetic response of tomato germplasm against early blight and its management through fungicides

2014

App. Sci. Report

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The response of fifty one tomato accessions germplasm were tested against early blight under field and walk-in tunnel conditions. None of the test germplasm was immune or highly resistant in both conditions. In the tunnel experiment, among the twenty seven indeterminate varieties and hybrids only one variety (Beefsteak) showed resistant response with PDI 15.55, eleven varieties and five hybrids were moderately resistant, three varieties and five hybrids were moderately susceptible, one variety (Sahel) and one hybrid (Litth-568) showed susceptible response with 68-70 PDI. In the field experiment, among the twenty four determinate varieties and hybrids four varieties (Black Prince, Oregon spring, Zhezha and Bloody Butcher) showed resistant response with PDI 11-16, ten varieties and four hybrids were moderately resistant, four varieties were moderately susceptible and one variety (Napoli) and one hybrid (Lth-174) showed susceptible response with 68.88 PDI. In-vitro five fungicides, namely, Cabriotop, Precure Combi, Halonil, Topsin-M and Difenoconazole were tested through poisoned food technique against A. solani. There was a significant decrease in mycelial growth of the fungus with an increase in fungicidal concentration. At 150 ppm, Difenoconazole (91.95%) gave maximum inhibition of the mycelial growth followed by Cabriotop (64.36%). Least inhibition of mycelial growth was observed in Halonil (45.97%). The fungicides which proved to be most effective in-vitro were tested in field, maximum disease control with 11.84 PDI was recorded in the Difenoconazole treated plots followed by Cabriotop sprayed plots with 26.66 PDI. The results of the present studies will be helpful to devise management strategies for the control of tomato early blight.

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The Early Blight of Tomato: Omics Interventions Toward Controlling Disease Spread and Development

Pandey

Savani

Singh

2021

Omics Technologies for Sustainable Agriculture and Global Food Security Volume 1

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Screening of Tomato Genotypes Against Early Blight (Alternaria Solani) by Detached Leaf Method

Cited by 4 publications

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Screening a set of tomato parental lines and their hybrids for resistance to early blight (Alternaria solani) by detached leaf method

Screening a set of tomato parental lines and their hybrids for resistance to early blight (Alternaria solani) by detached leaf method

Genetic response of tomato germplasm against early blight and its management through fungicides

The Early Blight of Tomato: Omics Interventions Toward Controlling Disease Spread and Development

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