Enhancement of Growth, Yield and Control of Root Rot Disease Caused by Fusarium Graminearum of Three Barley Cultivates in New Valley Governorate = تحسين صفات النمو والمحصول ومكافحة مرض عفن الجذور المتسبب عن فطر الفيوزاريوم جرامينوريم في ثلاثة أصناف من الشعير في محافظة الوادي الجديد

2017 ◽  
Vol 21 (7) ◽  
pp. 1159-1175
Author(s):  
Sh. I. Abaas ◽  
M. F. Abdel-Monaim ◽  
A. A. A. Badway
Keyword(s):  
Fusarium Graminearum ◽  
Root Rot ◽  
Growth Yield ◽  
Root Rot Disease ◽  
Rot Disease ◽  
And Control

scholarly journals Keefektifan Oligochitosan dalam Menekan Pertumbuhan Jamur Patogen Rigidoporus lignosus [(Klotzsch) Imazeki] Penyebab Penyakit Jamur Akar Putih pada Tanaman Cengkeh secara in Vitro

Agrikultura ◽  
2016 ◽  
Vol 27 (1) ◽  
Author(s):  
Fitri Widiantini ◽  
Andang Purnama ◽  
Endah Yulia ◽  
Dwindry Formanda
Keyword(s):  
Root Rot ◽  
Mycelial Growth ◽  
White Root Rot ◽  
Root Rot Disease ◽  
Randomized Design ◽  
Negative Effect ◽  
Rigidoporus Lignosus ◽  
Rot Disease ◽  
And Control

ABSTRACTThe effectiveness of Oligochitosan in Suppressing the Growth of Fungal PathogenRigidoporus lignosus [(Klotzsch) Imazeki] the Causal Agent of White Root Rot Disease of Clovesin VitroWhite root rot disease caused by fungi Rigidoporus lignosus (Klotzch) Imazeki is an important disease of cloves that can cause the death of clove plants. Negative effect on the use of intensive fungicides leads to the search of an alternative method which is more environmentally friendly. Oligochitosan is a natural compound that has antifungal activity and can be used as natural pesticide. This study aimed to determine the concentration of oligochitosan that was able to effectively inhibit R. lignosus mycelial growth and to determine the effect of oligochitosan to R. lignosus mycelial growth. The study used a Completely Randomized Design with 5 oligochitosan concentration treatments (2 g/l, 4 g/l, 6 g/l, 8 g/l and 10 g/l) and control (no treatment). Oligochitosan was diluted with water and mixed with PDA to meet the required concentration. Same concentration was also used to dip wooden toothpick for 1 min and incubated on PDA containing R. lignosus. The result showed that 6 g/l oligochitosan concentration was able to inhibit the mycelial growth of R. lignosus up to 71.6%. Highets inhibition of 100% was demonstrated by oligochitosan at concentration of 8 g/l and 10 g/l. The thinning of mycelial growth on the toothpick and microscopic observation demonstrated that the mycelial of R. lignosus were became lysis.Keywords: Antifungal, Food poisonous, Mycelial growth, LysisAbstrakPenyakit Jamur Akar Putih (JAP) yang disebabkan oleh jamur Rigidoporus lignosus (Klotzch) Imazeki merupakan penyakit penting yang menyerang tanaman cengkeh dan bahkan dapat mengakibatkan kematian tanaman. Pengaruh negatif dari penggunaan fungisida mendorong dilakukan pencarian alternatif pengendalian baru yang lebih ramah lingkungan. Oligochitosan merupakan senyawa alami yang mempunyai aktivitas anti jamur dan dapat digunakan sebagai pestisida nabati. Penelitian ini bertujuan untuk mendapatkan konsentrasi oligochitosan yang dapat secara efektif menghambat pertumbuhan jamur R. lignosus dan mengetahui pengaruh oligochitosan terhadap miselia jamur R. lignosus. Percobaan dilakukan dengan menggunakan rancangan acak lengkap dengan perlakuan terdiri dari 5 konsentrasi oligochitosan (2 g/l, 4 g/l, 6 g/l, 8 g/l dan 10 g/l) dan kontrol (tanpa oligochitosan). Oligochitosan dilarutan dalam air dan dicampur dengan PDA sehingga diperoleh konsentrasi yang diuji. Konsentrasi yang sama juga digunakan untuk merendam tusuk gigi selama 1 menit dan diinkubasikan dalam cawan petri yang sebelumnya sudah ditumbuhi oleh R. lignosus. Hasil penelitian menunjukkan bahwa oligochitosan pada konsentrasi 6 g/l menghambat pertumbuhan jamur R. lignosus sebesar 71,6%. Sementara penghambatan tertinggi sebesar 100% diperoleh pada perlakuan oligochitosan dengan konsentrasi8 g/l dan 10 g/l. Penipisan koloni jamur R. lignosus pada tusuk gigi dan pengamatan di bawahmikroskop menunjukkan bahwa oligochitosan menyebabkan lisis pada miselia jamur R. lignosus.Kata kunci: Anti jamur, Umpan beracun, Pertumbuhan koloni, Lisis

scholarly journals Identification and control the causal agent of root rot disease of cucumber in Iraq: تشخيص ومكافحة مسبب مرض تعفن جذور محصول الخيار في العراق

2019 ◽  
Vol 3 (3) ◽  
Author(s):  
Safaa Neamat Hussein
Keyword(s):  
Root Rot ◽  
Disease Incidence ◽  
Morphological Characteristics ◽  
Negative Control ◽  
Significant Inhibition ◽  
Causal Agent ◽  
Root Rot Disease ◽  
Rot Disease ◽  
And Control

This study aimed to isolate the causal agent of the root rot disease of cucumber and control it biologically. Samples were collected in the cucumber fields in the Diyala and Saladin governorates of Iraq. Isolation test demonstrated associate fungi belong to the twelve geniuses. Fusarium solani exhibited highly percentage of appearance of 82.15% with frequency 54.00%. Seventy-seven isolates identified as F. solani according to their cultural and morphological characteristics while sixty-five isolates of them amplified successfully with specific primer of Fusarium spp using PCR technique. Isolate DF13 was most virulent isolated while exhibited 0% cucumber seed germination in vitro. The bio-agent Bacillus pumilus demonstrated significant inhibition ability against the fungal isolate DF13 in vitro of 100%. Under greenhouse condition B. pumilus decreased the disease incidence and severity to 30.55% and 20.75% respectively compared to the negative control which was 80.50%, 55.00% respectively.

scholarly journals Insights Into Triticum aestivum Seedling Root Rot Caused by Fusarium graminearum

2015 ◽  
Vol 28 (12) ◽  
pp. 1288-1303 ◽  
Author(s):  
Qing Wang ◽  
Stefanie Vera Buxa ◽  
Alexandra Furch ◽  
Wolfgang Friedt ◽  
Sven Gottwald
Keyword(s):  
Triticum Aestivum ◽  
Life Cycle ◽  
Fusarium Graminearum ◽  
Root Rot ◽  
Fungal Pathogens ◽  
Resistance Breeding ◽  
Root Infection ◽  
Head Blight ◽  
Root Rot Disease ◽  
Rot Disease

Fusarium graminearum is one of the most common and potent fungal pathogens of wheat (Triticum aestivum), known for causing devastating spike infections and grain yield damage. F. graminearum is a typical soil-borne pathogen that builds up during consecutive cereal cropping. Speculation on systemic colonization of cereals by F. graminearum root infection have long existed but have not been proven. We have assessed the Fusarium root rot disease macroscopically in a diverse set of 12 wheat genotypes and microscopically in a comparative study of two genotypes with diverging responses. Here, we show a ‘new’ aspect of the F. graminearum life cycle, i.e., the head blight fungus uses a unique root-infection strategy with an initial stage typical for root pathogens and a later stage typical for spike infection. Root colonization negatively affects seedling development and leads to systemic plant invasion by tissue-adapted fungal strategies. Another major outcome is the identification of partial resistance to root rot. Disease severity assessments and histological examinations both demonstrated three distinct disease phases that, however, proceeded differently in resistant and susceptible genotypes. Soil-borne inoculum and root infection are considered significant components of the F. graminearum life cycle with important implications for the development of new strategies of resistance breeding and disease control.

Aphanomycespea root rot disease and control with special reference to impact of Brassicaceae cover crops

2012 ◽  
pp. 1-11 ◽  
Author(s):  
Shakhawat Hossain ◽  
Göran Bergkvist ◽  
Kerstin Berglund ◽  
Anna Mårtensson ◽  
Paula Persson
Keyword(s):  
Special Reference ◽  
Cover Crops ◽  
Root Rot ◽  
Root Rot Disease ◽  
Rot Disease ◽  
And Control
Sign in / Sign up

Export Citation Format

Share Document