scholarly journals PENGARUH PERLAKUAN BENIH DENGAN Trichoderma viride dan Pseudomonas fluorescens TERHADAP KETERJADIAN PENYAKIT BULAI (Peronosclerospora maydis) PADA BERBAGAI VARIETAS JAGUNG (Zea mays L.)

2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Alexander Turnip ◽  
Efri Efri ◽  
Joko Prasetyo
Keyword(s):  
Zea Mays ◽  
Pseudomonas Fluorescens ◽  
Downy Mildew ◽  
Zea Mays L ◽  
Trichoderma Viride ◽  
Trichoderma Spp

Penyakit bulai (downy mildew) yang disebabkan oleh jamur Peronosclerospora maydis merupakan penyakit yang banyak merusak tanaman jagung dan dapat menimbulkan kehilangan hasil sampai 100%. Salah satu alternatif pengendalian yang mulai dikembangkan saat ini adalah pemanfaatan agensia hayati. Trichoderma spp. dan bakteri Pseudomonas fluorescens memiliki potensi sebagai agensia hayati. Penelitian ini bertujuan mengetahui pengaruh jamur T. viride, bakteri P. fluorescens, dan kombinasi keduanya terhadap keterjadian penyakit bulai (P. maydis) pada varietas jagung lokal, jagung hibrida, dan jagung manis melalui perlakuan benih. Hasil penelitian menunjukkan bahwa jamur T. viride, bakteri P. fluorescens, serta kombinasi keduanya tidak berpengaruh terhadap keterjadian penyakit bulai pada tanaman jagung melalui perlakuan benih. Namun perbedaan varietas jagung berpengaruh nyata terhadap keterjadian penyakit bulai, varietas lokal mempunyai sifatketahanan yang lebih tinggi dibandingkan dengan varietas lainnya.

scholarly journals Pengaruh Penggunaan Beberapa Varietas dan Aplikasi Pseudomonas fluorescens untuk Mengendalikan Penyakit Bulai (Peronosclerospora maydis) pada Tanaman Jagung (Zea mays L.)

2019 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Muhamad Aditia Ulhaq ◽  
Rachmi Masnilah
Keyword(s):  
Zea Mays ◽  
Pseudomonas Fluorescens ◽  
Downy Mildew ◽  
Cell Walls ◽  
Zea Mays L ◽  
Economic Value ◽  
Limiting Factor ◽  
Test Design ◽  
Corn Plants ◽  
Food Needs

Corn is one of the commodities that have high economic value and important role in meeting food needs in Indonesia. Unfavorable conditions on the rate of the higher demand for corn. Pests to be one limiting factor that causes a decrease in the production of corn. Peronosclerospora maydis is a pathogen that causes downy mildew on corn. P. maydis infects corn plants at the age of 2-3 weeks, with the level of damage reaches 80-100%. Control efforts against this disease one of them using antagonistic microbes such as bacteria Pseudomonas fluorescens. P. fluorescens has the potential to control downy mildew because it produces compounds that are antibiosis as chitinase enzymes that can hydrolyze the cell walls of fungi. The purpose of this study to determine the effect of the interaction of P. fluorescens isolates applications and the use of some varieties to suppress downy mildew attack P. maydis on corn. The method used is to use a random test design of a factorial group with 2 factors. The first factor is the type of varieties with three levels namely V1: Pioneer 27, V2: Pioneer 21 and V3: Bonanza. The second factor is a type of isolates P. fluorescens with three levels namely P1: without the application of P. fluorescens, P2: Isolates P. fluorescens (A) and P3: Isolate of P. fluorescens (B). The result is the application of P. fluorescens and use of some varieties can suppress downy mildew P. maydis.

Genetic analysis of resistance to sorghum downy mildew and Rajasthan downy mildew in maize (Zea mays L.)

2004 ◽  
Vol 89 (2-3) ◽  
pp. 379-387 ◽  
Author(s):  
Sudha K Nair ◽  
B.M Prasanna ◽  
R.S Rathore ◽  
T.A.S Setty ◽  
R Kumar ◽  
...  
Keyword(s):  
Zea Mays ◽  
Genetic Analysis ◽  
Downy Mildew ◽  
Zea Mays L ◽  
Sorghum Downy Mildew

Improving sweet corn (Zea mays L. var saccharata) growth and yield using Pseudomonas fluorescens inoculation under varied watering regimes

2019 ◽  
Vol 226 ◽  
pp. 105757 ◽  
Author(s):  
Tayebeh Zarei ◽  
Ali Moradi ◽  
Seyed Abdolreza Kazemeini ◽  
Hooshang Farajee ◽  
Alireza Yadavi
Keyword(s):  
Zea Mays ◽  
Pseudomonas Fluorescens ◽  
Zea Mays L ◽  
Sweet Corn ◽  
Growth And Yield

scholarly journals Enhancing 15N-uptake in maize (Zea mays L.) by native Trichoderma spp. strains in Central Mexico

2019 ◽  
Vol 18 (22) ◽  
pp. 478-488
Author(s):  
J. A. Vera-Nunez ◽  
F. Luna-Martínez ◽  
M. S. Barcos-Arias ◽  
M. E. Avila-Miranda ◽  
O. A. Grageda-Cabrera ◽  
...  
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Central Mexico ◽  
Trichoderma Spp ◽  
15N Uptake

Augmented biocontrol action of silica nanoparticles and Pseudomonas fluorescens bioformulant in maize (Zea mays L.)

RSC Advances ◽  
2014 ◽  
Vol 4 (17) ◽  
pp. 8461 ◽  
Author(s):  
Suriyaprabha Rangaraj ◽  
Karunakaran Gopalu ◽  
Prabhu Muthusamy ◽  
Yuvakkumar Rathinam ◽  
Rajendran Venkatachalam ◽  
...  
Keyword(s):  
Zea Mays ◽  
Silica Nanoparticles ◽  
Pseudomonas Fluorescens ◽  
Zea Mays L

scholarly journals Heterosis for Resistance against Sorghum Downy Mildew [Peronosclerospora sorghi (Weston and Uppal) C.G. Shaw] Infection in Maize (Zea mays L.)

2021 ◽  
Author(s):  
S. Arulselvi ◽  
B. Selvi
Keyword(s):  
Zea Mays ◽  
Downy Mildew ◽  
Zea Mays L ◽  
Inbred Lines ◽  
Breeding Methods ◽  
Maize Production ◽  
Peronosclerospora Sorghi ◽  
Sorghum Downy Mildew ◽  
House Condition ◽  
Moderately Resistant

Background: Sorghum downy mildew (SDM) of maize caused by the fungus Peronosclerospora sorghi (Weston and Uppal) C.G. Shaw is one of the most important diseases of maize and it remains vital constraint in maize production. Since maize is the highly cross pollinated crop, exploitation of heterosis is one of the breeding methods to increase the production. Negative values in the expression of heterosis indicate a contribution towards resistance which is highly needed in order to have reduced incid ence of sorghum downy mildew in maize hybrids.Methods: The materials selected as parents for the present study consisted of nine maize inbred lines which comprised of three resistant (UMI102, UMI936(w) and UMI285), three moderately resistant (UMI176, UMI13 and UMI57) and three susceptible (UMI79, UMI432 and UMI467) inbreds to SDM incidence. Nine inbred lines were crossed in all possible combinations including reciprocals in diallel fashion and the resultant seventy two hybrids along with their parents and the check (COH(M)5) were raised and evaluated for resistance against SDM under glass house condition. The extent of heterosis was estimated over mid parent, better parent and popular check hybrid.Result: Analysis of variance for sorghum downy mildew incidence revealed highly significant differences among parents and hybrids indicating greater diversity among the genotypes for sorghum downy mildew incidence under study. Out of seventy two hybrids, only three hybrids namely UMI 13 x UMI 936 (W), UMI 467 x UMI 936 (W) and UMI 432 x UMI 936 (W) exhibited three types heterosis significantly in negative direction. 

scholarly journals Combinatorial efficacy of Trichoderma spp. and Pseudomonas fluorescens to enhance suppression of cell wall degrading enzymes produced by Fusarium wilt of Arachis hypogaea.L

2018 ◽  
Vol 7 (2) ◽  
pp. 36-42 ◽  
Author(s):  
P Rajeswari ◽  
R Kapoor
Keyword(s):  
Fusarium Oxysporum ◽  
Pseudomonas Fluorescens ◽  
Trichoderma Harzianum ◽  
Trichoderma Viride ◽  
Pectin Methylesterase ◽  
Biocontrol Agents ◽  
Cell Wall Degrading Enzymes ◽  
Trichoderma Spp ◽  
Pectinolytic Enzymes

Fusarium oxysporum, the soil borne pathogen causes vascular wilt, on majority of crop plants. It has been demonstrated that two different species of Trichoderma and Pseudomonas fluorescens suppress disease by different mechanisms. Therefore, application of a mixture of these biocontrol agents, and thus of several suppressive mechanisms, may represent a viable control strategy. A necessity for biocontrol by combinations of biocontrol agents can be the compatibility of the co-inoculated micro-organisms. Hence, compatibility between Trichoderma spp. and Pseudomonas fluorescens that have the ability to suppress Fusarium oxysporum in vitro on the activity of pectinolytic enzymes of Fusarium oxysporum. The activity of pectinolytic enzymes, i.e. pectin methyl esterase, endo and exo polymethylgalacturonases and exo and endo pectin trans eliminases produced by Fusarium oxysporum (Control) was higher. Maximum inhibition of pectin methylesterase, exo and endo polymethylgalacturonase and exo and endopectin trans eliminase was shown by culture filtrate of Trichoderma viride + Pseudomonas fluorescens (Tv+Pf) (1+2%), followed by Trichoderma harzianum + Pseudomonas fluorescens, (Th +Pf) (1.5+2%) and Trichoderma viride + Trichoderma harzianum (Tv+Th) (1+1.5%). However, pathogenecity suppression of Fusarium oxysporum, a causative of Arachis hypogaea. L by the compatible combination of Trichodema viride + Pseudomonas fluorescens (1+2%) was significantly better as compared to the single bio-agent. This indicates that specific interactions between biocontrol agents influence suppression of pathogenicity factors directly by combinations of these compatible bio-agents.Int. J. Agril. Res. Innov. & Tech. 7 (2): 36-42, December, 2017

scholarly journals In Vitro Inhibition of Cellulolytic Enzymes of Fusarium Oxysporum by Trichoderma spp and Pseudomonas Fluorescens on Arachis Hypogaea L

2015 ◽  
Vol 3 (1) ◽  
pp. 106-110
Author(s):  
P. Rajeswari
Keyword(s):  
Fusarium Oxysporum ◽  
Pseudomonas Fluorescens ◽  
Arachis Hypogaea ◽  
Fusarium Wilt ◽  
Trichoderma Viride ◽  
Antagonistic Activity ◽  
Cellulolytic Enzymes ◽  
Trichoderma Spp ◽  
In Vitro Inhibition

In an attempt to develop biocontrol system for management of Fusarium wilt in groundnut, Trichoderma viride, Trichoderma harzianum,and Pseudomonas fluorescens were evaluated for their antagonistic activity against Fusarium oxysporum in vitro. .Fusarium wilt diseasescaused by the fungus Fusarium oxysporum lead to significant yield losses of crops. Experiments were conducted on the effect of culture filtratesof T.viride (1%), T. harzianum (1.5%), and P. fluorescens (2%) on the in vitro inhibition of cellulolytic enzymes of Fusarium oxysporum. Theactivity of 1,4 endoglucanases, 1,4exoglucanase Cellobiase produced by Fusariumoxysporum was higher, when compared to control.Maximum inhibition of above Cellulolytic enzymes (1, 4 endoglucanases, 1,4exoglucanase, Cellobiase) was shown by T. viride treatment wasfollowed by T. harzianum and P. fluorescens. Of all the treatments, T. viride treatment showed higher rate of inhibition of Cellulolytic enzymesof Fusarium oxysporum followed by that of T. harzianum and P. fluorescens.This present study indicates that culture filtrate of T.viride(1%)is the best biocontrol agent in the inhibition of Fusarium oxysporum causing Fusarium wilt of Arachis hypogaea .LDOI: http://dx.doi.org/10.3126/ijasbt.v3i1.12138    Int J Appl Sci Biotechnol, Vol. 3(1): 106-110 

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