scholarly journals Evaluation for Resistance of Cluster Bean Varieties against Alternaria Leaf Blight in vivo

2020 ◽  
Vol 9 (9) ◽  
pp. 2107-2111
Author(s):  
Suresh Kumar ◽  
A.K. Meena ◽  
Mohit Kumar ◽  
Kavita Rani
Keyword(s):  
Leaf Blight ◽  
Cluster Bean ◽  
Alternaria Leaf Blight

scholarly journals Management of Alternaria leaf blight in tomato plants by mentha essential oil

2020 ◽  
Vol 56 (No. 3) ◽  
pp. 191-196
Author(s):  
Kahkashan Perveen ◽  
Najat A. Bokhari
Keyword(s):  
Antifungal Activity ◽  
Essential Oil ◽  
Mycelial Growth ◽  
Leaf Blight ◽  
In Vitro Test ◽  
Tomato Plants ◽  
Conidia Germination ◽  
Alternaria Leaf Blight

The essential oil obtained by the hydro-distillation of the leaves of Mentha arvensis Linnaeus was evaluated for its antifungal activity against the causal agent of the Alternaria blight of tomatoes, i.e., Alternaria alternata (Fries) Keissler. The antifungal activity of the mentha essential oil was assessed both in vitro and in vivo. The chemical composition of the mentha oil was also identified by GCMS analysis. The in vitro test revealed that the maximum inhibition in the mycelial growth (93.6%) and conidia germination (90.6%) was at the highest concentration (40 µL/mL), furthermore, it was found that the inhibition of the mycelial growth and conidia germination was dose dependent. The in vivo test proved that the application of the mentha essential oil (40 µL/mL) significantly increased the plant height (84.6%), fresh weight (81.5%) and dry weight (80.0%) when compared to the untreated tomato plants. The disease incidence was 3.5 in the untreated plants, while it was 0.93 for the mentha essential oil treated plants and was 0.08 in the carbendazim treated plants. The GC-MS analysis of the mentha essential oil identified 18 compounds in total, among which the percentage of menthol was the highest (69.2%). The mentha essential oil was successful in managing the Alternaria leaf blight in the tomato plants. Therefore, it can be explored further for the development of a natural fungicide.

scholarly journals Redroot pigweed as a host for Alternaria alternata – the causal agent of Alternaria leaf blight in potato

2015 ◽  
Vol 102 (1) ◽  
pp. 115-118 ◽  
Author(s):  
Stanisław Mazur ◽  
Halina Kurzawińska ◽  
Małgorzata Nadziakiewicz ◽  
Jacek Nawrocki
Keyword(s):  
Alternaria Alternata ◽  
Leaf Blight ◽  
Causal Agent ◽  
Redroot Pigweed ◽  
Alternaria Leaf Blight

scholarly journals Influence of weather parameters on alternaria leaf blight severity of makhana under the agro-climate of Koshi region of Bihar

2021 ◽  
Vol 23 (1) ◽  
pp. 54-59
Author(s):  
SANTOSH KUMAR ◽  
MD. NADEEM AKHTAR ◽  
SANTOSH KUMAR ◽  
MAHESH KUMAR ◽  
TRIBHUWAN KUMAR
Keyword(s):  
High Temperature ◽  
Relative Humidity ◽  
Disease Severity ◽  
Infection Process ◽  
Leaf Blight ◽  
Alternaria Leaf Blight ◽  
Weather Parameters ◽  
Maximum Temperatures ◽  
Blight Disease ◽  
Cent Disease

Weather parameters play a pivotal role in the infection process and spread of pathogen. It also influences the expression of susceptibility/resistance of the host plant during post-infection phases. Therefore, an experiment was conducted for two consecutive cropping seasons (2018 &2019) to study the influence of weather parameters such as temperature, humidity, rainfall and wind direction on the emergence of alternaria leaf blight of makhana in Koshi region of Bihar. Maximum per cent disease severity of alternarialeaf blightwas observed during the peak monsoon months (June to August). Highest disease severity of leaf blight (14.80% & 15.7%) was observed in the mid June during crop season, 2018 and 2019. High temperature (36.9oC & 38.1oC), and relative humidity (94% & 96.4%) of both the year 2018 and 2019 were found correlated with higher severity to alternaria leaf blight. Similarly average HTR values (3.1) were also found correlated with the average high temperature and relative humidity of both years (2018 and 2019) in terms of severity of leaf blight disease. Maximum temperatures, relative humidity and rainfall exhibited strong positive linear relationship and influenced the occurrence of alternaria leaf blight disease significantly. We also developed a geo-phytopathological model for the prediction of alternaria leaf blight disease of makhana on the basis of congenial mean temperature and relative humidity.

scholarly journals Distinguish metabolic profiles and defense enzymes in Alternaria leaf blight resistant and susceptible genotypes of groundnut

2019 ◽  
Vol 25 (6) ◽  
pp. 1395-1405
Author(s):  
M. K. Mahatma ◽  
L. K. Thawait ◽  
K. S. Jadon ◽  
K. J. Rathod ◽  
K. H. Sodha ◽  
...  
Keyword(s):  
Leaf Blight ◽  
Metabolic Profiles ◽  
Defense Enzymes ◽  
Alternaria Leaf Blight

CARROT BREEDING FOR ALTERNARIA LEAF BLIGHT RESISTANCE

2014 ◽  
pp. 223-226 ◽  
Author(s):  
B.M. Amirov ◽  
ZH.S. Amirova ◽  
U.A. Manabaeva ◽  
K.R. Zhasybaeva
Keyword(s):  
Leaf Blight ◽  
Blight Resistance ◽  
Alternaria Leaf Blight

Genetic architecture of factors underlying partial resistance to Alternaria leaf blight in carrot

2009 ◽  
Vol 118 (7) ◽  
pp. 1251-1259 ◽  
Author(s):  
Valérie Le Clerc ◽  
Anna Pawelec ◽  
Christelle Birolleau-Touchard ◽  
Anita Suel ◽  
Mathilde Briard
Keyword(s):  
Partial Resistance ◽  
Genetic Architecture ◽  
Leaf Blight ◽  
Alternaria Leaf Blight

scholarly journals Present status of Alternaria leaf blight disease of sunflower in north eastern Karnataka

2020 ◽  
Vol 8 (3) ◽  
pp. 2906-2908
Author(s):  
P Vidyashree ◽  
ST Yenjerappa ◽  
D Pramesh ◽  
Gururaj Sunkad ◽  
Vikas Kulkarni
Keyword(s):  
Present Status ◽  
Leaf Blight ◽  
Alternaria Leaf Blight ◽  
North Eastern ◽  
Blight Disease

scholarly journals The First Record of Alternaria triticina the Causative Agent of Alternaria Leaf Blight in Wheat and Barley in Iraq

2014 ◽  
Vol 3 (3) ◽  
pp. 133-138
Author(s):  
Mohammed W. Khudhair ◽  
Hadi M. Aboud ◽  
Naeem S. Dheyab ◽  
Ali K. Shbar ◽  
Hiatham S. Khalaf
Keyword(s):  
Severe Infection ◽  
First Record ◽  
Leaf Blight ◽  
High Yield ◽  
Plant Parts ◽  
Isolation Frequency ◽  
Alternaria Leaf Blight ◽  
Almost All ◽  
First Time ◽  
Investigation Process

Alternaria leaf blight caused by Alternaria triticina can cause high yield losses at the severe infection in wheat and barley. It is first time for this pathogen to be recorded in Iraq. The investigation process of this disease included 25 locations from 12 sites in 5 provinces that plant wheat and barley in the south and middle of Iraq. The results revealed that the fungus was isolated from almost all examined locations with different frequency. Shethaif- Al Garbie and Sheikh Saad showed higher number of isolates with 60 and 40 in wheat fields respectively; while; Shethaif- Al Garbie and Dabuni expressed the highest number of isolates in barley fields with 45 and 33 respectively. The highest isolation frequency in wheat fields was at Sheikh Saad and Ali Alsharqi with 100% followed by Ali Algharbie with 90% and the lowest was at Al- Kut and Al-Huria with 37.5 and 40% respectively. The highest isolation frequency in barley fields was recorded at Dabuni with 82.5% followed by Shethaif- Al Garbie and Babil / Al-Huria with 75% and the lowest was at Al-Basrah/ Shatt al-Arab with 20%. The fungus was isolated from all plant parts (stem, leaf, and spike); however, spikes recorded the highest isolation frequency reaching 100% in some locations.

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