scholarly journals Biochemical Resistance Traits of Bitter Gourd against Fruit Fly Bactrocera cucurbitae (Coquillett) Infestation

2017 ◽  
Vol 9 (2) ◽  
pp. 217
Author(s):  
Paras Nath ◽  
A. K. Pandey ◽  
Akilesh Kumar ◽  
A. B. Rai ◽  
Hemalatha Palanivel
Keyword(s):  
Negative Correlation ◽  
Reducing Sugars ◽  
Larval Density ◽  
Fruit Fly ◽  
Significant Negative Correlation ◽  
Ash Content ◽  
Bitter Gourd ◽  
Bactrocera Cucurbitae ◽  
Total Sugars ◽  
Fruit Damage

Host plant resistance is a key factor for management of the melon fruit fly, Bactrocera cucurbitae (Coquillett), due to difficulties associated with its chemical and biological control. Various biochemical traits including total sugars, reducing sugars, non-reducing sugars, silica, protein content, ash content, other elements and phenols, and moisture content of fruit were studied on 74 varieties/genotypes of bitter gourd (Momordica charantia L.), in relation to resistance against B. cucurbitae under field conditions. Seventy-four genotypes of bitter gourd were screened against fruit fly infestation. The correlation coefficients revealed that the larval density and bitter gourd fruit damage (%) had significant positive relationship (r = 0.99). The moisture content had significant positive effect on the fruit damage (r = 0.75) and number of larvae per fruit (0.80). Significant differences were found in tested varieties/genotypes for fruit infestation and larval density per fruit. The nitrogen, phosphorous, potassium and protein content (r = -0.87, -0.90) showed significant negative correlation with fruit fly infestation. The non-reducing, reducing, total sugars, total phenols, silica and ash content had significant impact on the fruit damage and showed significant negative correlation with fruit fly infestation. The ascorbic acid also had significant impact on the fruit damage and showed significant negative correlation with fruit fly infestation (r = -0.79), the chlorophyll ‘a’, ‘b’ and total chlorophyll content had non-significant negative effect on the fruit damage and number of larvae per fruit.

scholarly journals Role of Abiotic Factors on Seasonal Abundance and Infestation of Fruit Fly, Bactrocera Cucurbitae (COQ.) on Bitter Gourd

2012 ◽  
Vol 52 (2) ◽  
pp. 264-267 ◽  
Author(s):  
Avadhesh Raghuvanshi ◽  
Subrata Satpathy ◽  
Debi Mishra
Keyword(s):  
Abiotic Factors ◽  
Fruit Fly ◽  
Seasonal Abundance ◽  
Bitter Gourd ◽  
Bactrocera Cucurbitae ◽  
Baited Traps ◽  
Fruit Damage ◽  
Two Peaks ◽  
Second Peak

Role of Abiotic Factors on Seasonal Abundance and Infestation of Fruit Fly, Bactrocera Cucurbitae (COQ.) on Bitter Gourd Throughout the year, there was an abundance of fruit flies in Cue-lure baited traps. Two peaks; in summer and kharif (Autumn) coincided with the 14 SW and 43 SW respectively. In kharif, maximum bitter gourd fruit damage (62.70%) occurred in the 45 SW. A second peak, with 49.70% fruit damage was observed during the 15 SW period. The temperature (maximum and minimum) showed a significant positive correlation with adult abundance, fruit damage and pupal population. The temperature recorded during the preceding first, second and third weeks had a slightly greater impact than the temperature of the current week in which the fruit fly abundance had been checked. Other abiotic factors had a non-significant effect on fruit fly adult activity, fruit damage and pupal population.

scholarly journals Physicochemical Characteristics and Microbiological Quality of Honey Produced in Benin

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
François Ezin Azonwade ◽  
Armand Paraïso ◽  
Cokou P. Agbangnan Dossa ◽  
Victorien T. Dougnon ◽  
Christine N’tcha ◽  
...  
Keyword(s):  
Reducing Sugars ◽  
Microbiological Quality ◽  
Physicochemical Characteristics ◽  
Ash Content ◽  
International Standards ◽  
Free Acidity ◽  
Total Sugars ◽  
Microbiological Characteristics ◽  
Significant Difference

Honey is a very complex biological product. It has great diversity, giving it a multitude of properties, both nutritionally and therapeutically. This study aimed to study the physicochemical and microbiological characteristics of honeys collected during the dry and rainy seasons in the different phytogeographical areas of Benin. The study revealed that all honeys had pH, water content, electrical conductivity, ash content, free acidity, total sugars, and reducing sugars, respectively, ranging within 3.65–4.09; 12.07–13.16%; 530.25–698.50 μs/cm; 0.42–0.53%; 35.67–40.52 meq/kg; 60–70%; and 58–70%. Moisture content, total sugars, and reducing sugars varied very significantly (p<0.05top<0.001) from one area to another and from one season to another. However, only the production season has a significant influence (p<0.05) on the pH of the honey. With regard to the ash content, free acidity, and electrical conduction, no significant difference (p>0.05) between the zones or between the seasons was observed. The results of the microbiological characterization showed that there is heterogeneity in the microbial load. These results have shown that these honeys meet international standards and their characterization will make it possible to obtain Beninese quality labels.

A low cost bisexual food baited trap for Bactrocera cucurbitae (Coquillet) (Tephritidae: Diptera) in gourds

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 287-290
Author(s):  
Kishor Pujar ◽  
T. Elaiyabharathi ◽  
T. Kempraj ◽  
C. Kavitha
Keyword(s):  
Field Experiments ◽  
Low Cost ◽  
Fruit Fly ◽  
Fruit Flies ◽  
Bitter Gourd ◽  
Bactrocera Cucurbitae ◽  
Food Grade ◽  
Male Ratio ◽  
The Cost ◽  
Luffa Acutangula

A low cost fruit fly trap was designed to attract the fruit flies with food baits. The preliminary field experiments were conducted for selecting the food bait and its concentration. A combination of 30 g of banana pulp + 3 ml of food grade alcohol selected and tested in gourds namely snake gourd (Trichosanthes anguina L.), ridge gourd (Luffa acutangula L.) and bitter gourd (Momordica charantia L.) in Coimbatore and Dharmapuri. The food bait attracted both sexes of B. cucurbitae with female: male ratio 0.78:1 and the cost of trap and food bait costs only 43 rupees per acre.

scholarly journals Isolation and Identification of Talaromyces sp. Strain Q2 and Its Biocontrol Mechanisms Involved in the Control of Fusarium Wilt

2021 ◽  
Vol 12 ◽  
Author(s):  
Yehan Tian ◽  
Yang Zhao ◽  
Xuesong Fu ◽  
Chengming Yu ◽  
Kexiang Gao ◽  
...  
Keyword(s):  
Cell Wall ◽  
Relative Abundance ◽  
Negative Correlation ◽  
Growth And Development ◽  
Disease Incidence ◽  
Significant Negative Correlation ◽  
Bitter Gourd ◽  
Cell Wall Degrading Enzymes ◽  
Isolation And Identification ◽  
Strong Negative Correlation

Fusarium wilt is an important disease of many food crops and often causes serious damages to yield and food quality. Consequently, numerous studies mainly focused on exploring the control strategy for Fusarium oxysporum as well as the mechanism of interaction between the F. oxysporum and other beneficial soil microorganisms. In this study, we have screened and identified an efficient biocontrol strain from the soil with infection of F. oxysporum f. sp. momordica (referred to as Fom), Talaromyces purpurogenus Q2 (referred to as TpQ2), which could be effective to reduce relative abundance of the rhizospheric Fom, leading to a significant decrease of Fusarium wilt disease incidence in bitter gourd during the greenhouse and field trails. TpQ2 can reduce the relative abundance of rhizospheric Fom through inhibition of growth and development of Fom. During the co-cultivation of TpQ2 and Fom, we confirmed that TpQ2 could significantly suppress the growth and development of Fom through disturbing the normal hyphae shape and function of the cell walls of Fom via secreting cell wall–degrading enzymes and suppression of the expression of cell wall biosynthesis genes, such as FomCFEM. In the meantime, TpQ2 showed a strong negative correlation with F. oxysporum in soil and positive correlation with beneficial indigenous microorganisms that had significant negative correlation with Fusarium populations, such as Streptomycetes, Lysobacter, and Sphingobium. To summarize, TpQ2 has a good biocontrol efficacy on Fusarium wilt of bitter gourd. The biocontrol mechanisms of TpQ2 on Fusarium wilt are complex and diverse.

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