scholarly journals INCIDÊNCIA DE Cercosporidium personatum EM AMENDOIM SUBMETIDO À IRRIGAÇÃO PLENA E DEFICITÁRIA

2018 ◽  
Author(s):  
Pablo Nascimento de Oliveira França ◽  
Willians César Carrega ◽  
Rogério Teixeira de Faria ◽  
Anderson Prates Coelho
Keyword(s):  
Cercosporidium Personatum

scholarly journals Incidence of Leaf Spot Disease Caused by Cercosporidium personatum in Resistant, Susceptible and Hybridized Population of Groundnut Cultivars

2018 ◽  
Vol 10 (10) ◽  
pp. 513
Author(s):  
M. C. Kottayi ◽  
D. D. Saoji ◽  
S. E. Pawar ◽  
A. D. Choudhary
Keyword(s):  
Leaf Spot ◽  
Disease Incidence ◽  
Resistant Mutant ◽  
Resistant Cultivar ◽  
Leaf Spot Disease ◽  
Cercosporidium Personatum ◽  
Reciprocal Crosses ◽  
Spot Disease ◽  
Mutant Lines

The disease incidence of Cercosporidium personatum in field was analysed in the hybridized population derived from the resistant mutant lines of the cultivar ICGV-87304 and TAG-24 & TG-26. Reciprocal crosses were performed using the same parents. The comparison of disease incidence in hybridized population was made with resistant cultivar Girnar-1. Susceptible parents TAG-24 and TG-26 showed disease incidence of 14.08 and 16.40%, respectively while Girnar-1 and the resistant mutant parents showed percentage infection ranging from 0.06-0.96%. The plants raised from the hybridized population showed the percent infection ranging from 0.01 to 0.02 %.

Peanut genes identified during initial phase of Cercosporidium personatum infection

Plant Science ◽  
2008 ◽  
Vol 174 (1) ◽  
pp. 78-87 ◽  
Author(s):  
Paula Macedo Nobile ◽  
Catalina Romero Lopes ◽  
Carla Barsalobres-Cavallari ◽  
Vera Quecini ◽  
Luiz L. Coutinho ◽  
...  
Keyword(s):  
Initial Phase ◽  
Cercosporidium Personatum

Applications of Mixtures of Copper Fungicides and Chlorothalonil for Management of Peanut Leaf Spot Diseases

2001 ◽  
Vol 2 (1) ◽  
pp. 1 ◽  
Author(s):  
A. K. Culbreath ◽  
T. B. Brenneman ◽  
R. C. Kemerait
Keyword(s):  
Arachis Hypogaea ◽  
Leaf Spot ◽  
Field Experiments ◽  
Cercospora Arachidicola ◽  
Copper Oxychloride ◽  
Copper Hydroxide ◽  
Cercosporidium Personatum ◽  
Late Leaf Spot ◽  
Copper Fungicides

Management of early leaf spot (Cercospora arachidicola) and late leaf spot (Cercosporidium personatum) of peanut (Arachis hypogaea) in the southeastern U.S. is dependent upon multiple applications of foliar fungicides. Field experiments were conducted from 1997 to 2000 to compare the efficacy of mixtures of copper hydroxide or copper oxychloride and reduced rates of chlorothalonil with that of full rates of chlorothalonil alone or chlorothalonil + propiconazole. In all tests, rates per ha of 0.70 kg of chlorothalonil + 0.70 kg of copper oxychloride or higher provided leaf spot control that was similar (P > 0.05) to that achieved with standard rates of chlorothalonil (0.84 kg/ha) + propiconazole (0.063 kg/ha). Application of chlorothalonil at 0.56 kg/ha + copper oxychloride at 0.56 kg/ha controlled leaf spot as well as (P > 0.05) chlorothalonil alone at 1.26 kg/ha in five of six tests in which that treatment was evaluated. In three of four tests in 1998 and 1999, application of chlorothalonil at 0.63 kg/ha + copper hydroxide at 0.63 kg/ha controlled leaf spot as well as chlorothalonil alone at 1.26 kg/ha. In both tests in 2000, application of chlorothalonil at 0.84 kg/ha + copper hydroxide at 0.63 kg/ha controlled leaf spot as well as chlorothalonil alone at 1.26 kg/ha. There were no consistent yield differences among the chlorothalonil, chlorothalonil + propiconazole, or chlorothalonil + copper treatments. Accepted for publication 8 November 2001. Published 16 November 2001.

scholarly journals Screening of different plant extracts against leaf spot (Cercospora arachidicola and Cercosporidium personatum) of groundnut (Arachis hypogaea L.)

2013 ◽  
Vol 38 (3) ◽  
pp. 491-503 ◽  
Author(s):  
MH Hossain ◽  
I Hossain
Keyword(s):  
Plant Extracts ◽  
Leaf Spot ◽  
Growth Parameters ◽  
Disease Incidence ◽  
Foliar Spray ◽  
Plain Water ◽  
Infected Leaf ◽  
Cercospora Arachidicola ◽  
Cercosporidium Personatum ◽  
Almost All

A study was undertaken to evaluate effectiveness of foliar spray with 33 plant extracts against leaf spot (Tikka) of groundnut caused by Cercospora arachidicola and Cercosporidium personatum. Bavistin and BAU-Biofungicide were included in the experiment as checks and spray of plain water represented control. Almost all treatments gave considerable reduction in disease incidence and increase in growth parameters, pod and haulm yield compared to control. The most effective materials were Bavistin 50 WP, BAU-Biofungicide, leaf extract of neem, tomato, datura black, and datura white. The materials decreased spot number per leaf, defoliation per plant, incidence of leaf spot, and number of infected leaf per plant by 35.45 -60.07, 42.06-72.20, 51.97–63.58, and 38.33 to 46.89 % and increased pod yield and haulm yield by 64.37-111.41 and 32.35- 74.71 %, respectively. The materials may be recommended against the disease after economic analysis. DOI: http://dx.doi.org/10.3329/bjar.v38i3.16976 Bangladesh J. Agril. Res. 38(3): 491-503, September 2013

scholarly journals Resistance to Rust and Late Leafspot Diseases in Some Genotypes of Arachis hypogaea1

1982 ◽  
Vol 9 (1) ◽  
pp. 6-10 ◽  
Author(s):  
P. Subrahmanyam ◽  
D. McDonald ◽  
R. W. Gibbons ◽  
S. N. Nigam ◽  
D. J. Nevill
Keyword(s):  
Disease Resistance ◽  
Breeding Program ◽  
Field Conditions ◽  
Cercosporidium Personatum ◽  
Puccinia Arachidis ◽  
Lesion Diameter ◽  
Multiple Disease Resistance

Abstract Resistance to rust (Puccinia arachidis Speg.) and late leafspot (Cercosporidium personatum (Berk. & Curt.) Deighton) in some peanut genotypes was studied under field conditions. Late leafspot development was also assessed in the glasshouse and the parameters lesion diameter, defoliation percentage and sporulation gave highly significant correlations with the field disease scores. Several genotypes were found to be resistant to both rust and late leafspot and should be useful sources of multiple disease-resistance in a breeding program.

The Choice of Groundnut (Arachis hypogaea) Varieties by Smallholders in South-east Tanzania. I. Observations on Different Varieties

1986 ◽  
Vol 22 (3) ◽  
pp. 269-278 ◽  
Author(s):  
S. R. Preston ◽  
J. H. Simons ◽  
B. R. Taylor
Keyword(s):  
Arachis Hypogaea ◽  
Seed Dormancy ◽  
Moisture Stress ◽  
Yield Losses ◽  
Cercosporidium Personatum ◽  
Varietal Differences ◽  
Puccinia Arachidis ◽  
Short Season

SUMMARYSmallholders in south-east Tanzania grow the groundnut Red Mwitunde (Arachis hypogaea ssp. hypogaea), a long-season variety with seed dormancy, although earlier maturing varieties with no seed dormancy (ssp. hypogaea and fastigiata) usually yielded better in trials, particularly when late sown. Small-seeded, short-season varieties established better in the field than Red Mwitunde and other large-seeded varieties, especially under moisture stress. Trials with selective fungicides to estimate yield losses from leafspots (mainly Cercosporidium personatum) and rust (Puccinia arachidis), jointly and separately, showed no consistent varietal differences.

Inheritance of Resistance to Cercospora arachidicola and Cercosporidium personatum in Six Virginia-type Peanut Lines1,3

1980 ◽  
Vol 7 (1) ◽  
pp. 4-9 ◽  
Author(s):  
Julia L. Kornegay ◽  
M. K. Beute ◽  
J. C. Wynne
Keyword(s):  
Combining Ability ◽  
Leaf Spot ◽  
Resistance Breeding ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Leaf Spot Disease ◽  
Inheritance Of Resistance ◽  
Cercospora Arachidicola ◽  
Cercosporidium Personatum ◽  
Leaf Spots

Abstract The inheritance of resistance to two cercospora leaf-spots, Cercospora arachidicola (early leafspot) and Cercosporidium personatum (late leafspot) in Virginia-type peanuts (Arachis hypogaea L.), was determined using F1 and F2 generations and parental lines from a six parent diallel cross under natural field conditions. Two techniques for rating disease severity were employed. General combining ability, determined from both rating techniques, was significant for both F1 and F2 generations, indicating that resistance to both fungi and tolerance to infection i. e., minimal leaf defoliation, was primarily due to additive genetic effects. The six parents produced offspring with different levels of resistance to both fungi. From the estimates of general combining ability effects, only NC-GP 343 and NC 5 produced progeny resistant to both early and late leaf-spot. NC 3033 was resistant to early leafspot, but susceptible to late leafspot. NC-Ac 3139, Florigiant and NC 2 were resistant to late leafspot, but susceptible to early leaf-spot. Disease indices ranked NC 3033 and NC-GP 343 as, overall, the most resistant of the six lines and the most useful to include in a cercospora leafspots resistance breeding program.

Ultrastructure of the Initial Interaction of Puccinia arachidis and Cercosporidium personatum with Leaves of Arachis hypogaea and Arachis stenosperma

2010 ◽  
Vol 158 (11-12) ◽  
pp. 792-796 ◽  
Author(s):  
Soraya Cristina De Macedo Leal-Bertioli ◽  
Marcelo Picanço De Farias ◽  
Pedro Íalo Tanno Silva ◽  
Patricia Messenberg Guimarães ◽  
Ana Cristina Miranda Brasileiro ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Cercosporidium Personatum ◽  
Puccinia Arachidis ◽  
Initial Interaction

scholarly journals KETAHANAN TIGA SPESIES ARACHIS TERHADAP BERCAK DAUN AKHIR (CERCOSPORIDIUM PERSONATUM BERK. ET CURT.) PADA PEMBERIAN DAN TANPA PEMBERIAN MANKOZEB

2004 ◽  
Vol 4 (2) ◽  
pp. 75-82
Author(s):  
Setyo Dwi Utomo ◽  
Hasriadi Mat Akin
Keyword(s):  
Wild Species ◽  
Leaf Spot ◽  
Effective Means ◽  
Yield Losses ◽  
Cercosporidium Personatum ◽  
Resistant Parent ◽  
Late Leaf Spot ◽  
Fungicide Treatment ◽  
Cultivated Peanut ◽  
Resistant Genotypes

The resistance of three species of Arachis to late leaf spot (Cercosporidium personatum) with and without application of mankozeb.  The use of  resistant cultivars and application of fungicide are effective means to control late leafspot.  Resistant genotypes of peanut is required as a parent for hibridization to develop high-yielding cultivars resistant to late leaf spot.  The objective of this study were to evaluate the resistance of 11 genotypes from three species of Arachis to  late leaf spot (C. personatum) with and without application of mankozeb.  The experiment was arangged ia a split splot design with three replications.  The main plots were  fungicide treatment (treated and untreated).  Fungicide mankozeb ( 4 g/l, 500 l/ha) was applied at 28, 40, 52, 64 and 76 days after planting.  The sub-plots were genotypes of species Arachis, i.e.,   7 lines of cultivated peanut (Archis hypogaea) from ICRISAT, 2 national varieties (Gajah and Kelinci),  and two wild species (A. cardenasii, and A. pintoi).  The two wild species were imune to late leaf spot so that they can be utilized as resistant parent in wide hybridization to develop a superior cultivars.  ICGV 88262 was more resistant than Gajah and Kelinci.  Because its yield tend to be lower than Gajah and Kelinci, ICGV 88262 also can be utilized as resistant parent in hibridization.  Mankozeb was efective and substantially reduced yield losses of cv. Gajah.  Mankozeb should be aplied in cultivation of cv. Gajah to control late leafspot.

scholarly journals Produtividade, estabilidade e adaptabilidade de cultivares de amendoim em três níveis de controle de doenças foliares

1999 ◽  
Vol 34 (7) ◽  
pp. 1183-1191 ◽  
Author(s):  
Ignácio José de Godoy ◽  
Sérgio Almeida de Moraes ◽  
Walter José Siqueira ◽  
José Carlos Vila Nova Alves Pereira ◽  
Antonio Lúcio de Mello Martins ◽  
...  
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Cercosporidium Personatum ◽  
Puccinia Arachidis

O objetivo deste trabalho foi avaliar o desempenho produtivo, a estabilidade da produção e a adaptabilidade de três cultivares de amendoim em diversos ambientes típicos de cultivo e severidade das doenças foliares que podem ocorrer no Estado de São Paulo. Foram avaliadas as cultivares Tatu, Florunner e IAC-Caiapó sob três níveis de controle de doenças foliares, em experimentos onde as doenças predominantes foram a mancha-preta (Cercosporidium personatum) e a ferrugem (Puccinia arachidis). Os experimentos utilizaram delineamento em parcelas subdivididas com quatro repetições, em subparcelas de quatro linhas de 5 m de comprimento. As parcelas principais consistiram de controle químico com duas ou quatro pulverizações, e um tratamento sem controle das doenças. Estimaram-se, também, a estabilidade e adaptabilidade entre os ambientes, dentro de cada nível de controle das doenças. A cultivar Florunner mostrou as maiores respostas ao controle químico, em relação à produtividade e adaptabilidade aos ambientes onde as doenças foram bem controladas. As cultivares Tatu e IAC-Caiapó apresentaram comportamentos semelhantes em resposta ao controle das doenças e superaram a cultivar Florunner em produtividade, na qual a pressão das doenças foi maior. A cultivar IAC-Caiapó mostrou produtividade, maior que a da cultivar Tatu e desempenho produtivo mais estável (previsível) do que as outras cultivares, nos três níveis de controle das doenças.

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