Preharvest sprays with sodium nitroprusside induce resistance in harvested muskmelon against the pink rot disease

2021 ◽  
Author(s):  
Bin Wang ◽  
Xingfen He ◽  
Yang Bi ◽  
Hong Jiang ◽  
Yi Wang ◽  
...  
Keyword(s):  
Sodium Nitroprusside ◽  
Pink Rot ◽  
Induce Resistance ◽  
Rot Disease

Bacterial Antagonists, Zoospore Inoculum Retention Time and Potato Cultivar Influence Pink Rot Disease Development

2009 ◽  
Vol 86 (2) ◽  
pp. 102-111 ◽  
Author(s):  
David A. Schisler ◽  
Patricia J. Slininger ◽  
Jeff S. Miller ◽  
Lynn K. Woodell ◽  
Shane Clayson ◽  
...  
Keyword(s):  
Retention Time ◽  
Potato Cultivar ◽  
Disease Development ◽  
Pink Rot ◽  
Bacterial Antagonists ◽  
Rot Disease

Garlic Pink Rot Disease and Crop Yield as Affected by Salinity and Irrigation Water Deficit

2019 ◽  
Vol 47 (2) ◽  
pp. 141-155
Author(s):  
Ahmed Abd-El-Baky ◽  
Heba Yousef ◽  
Shalaby Shalaby
Keyword(s):  
Water Deficit ◽  
Crop Yield ◽  
Irrigation Water ◽  
Pink Rot ◽  
Rot Disease

scholarly journals Beta Regression Model for Predicting the Development of Pink Rot in Potato Tubers During Storage

Plant Disease ◽  
2016 ◽  
Vol 100 (6) ◽  
pp. 1118-1124 ◽  
Author(s):  
S. KR. Yellareddygari ◽  
Julie S. Pasche ◽  
Raymond J. Taylor ◽  
Su Hua ◽  
Neil C. Gudmestad
Keyword(s):  
Linear Regression ◽  
Regression Model ◽  
Linear Regression Model ◽  
Ordinary Least Squares ◽  
Economic Losses ◽  
Beta Regression ◽  
Disease Development ◽  
Pink Rot ◽  
Rot Disease ◽  
Beta Regression Model

Pink rot is an important disease of potato with worldwide distribution. Severe yield and quality losses have been reported at harvest and in postharvest storage. Under conditions favoring disease development, pink rot severity can continue to increase from the field to storage and from storage to transit, causing further losses. Prediction of pink rot disease development in storage has great potential for growers to intervene at an earlier stage of disease development to minimize economic losses. Pink rot disease is estimated as percent rot confined on the interval (0 or 1, corresponding to 0% as no disease and 100% as maximum disease). In this study, beta regression is considered over the traditional ordinary least squares regression (linear regression) for fitting continuous response variables bounded on the unit interval (0,1). This method is considered a good alternative to data transformation and analysis by linear regression. The percentages of incidence of pink rot in tubers at harvest, yield, and days after harvest were used as study covariates to predict pink rot development from 32 to 78 days postharvest. Results demonstrate that the interaction between percentage of pink rot at harvest and yield is a significant predictor (P < 0.0001) of the beta regression model. A linear regression model was also designed to compare the results with the proposed beta regression model. Linear predictors observed in diagnostic plots with linear regression model was found to not be constant and an adjusted R2 (0.49) was obtained. The pseudo R2 (0.56) and constant variance for this study suggests that the beta regression function is adequate for predicting the development of pink rot during storage. The use of the beta prediction model could help growers decide whether to apply a fungicide to tubers going into storage or to market their crop before significant storage losses are incurred.

An in vivo Model for the Assessment of Acute Fibrinolytic Capacity of the Endothelium

1997 ◽  
Vol 78 (04) ◽  
pp. 1242-1248 ◽  
Author(s):  
David E Newby ◽  
Robert A Wright ◽  
Christopher A Ludlam ◽  
Keith A A Fox ◽  
Nicholas A Boon ◽  
...  
Keyword(s):  
Blood Flow ◽  
Substance P ◽  
Sodium Nitroprusside ◽  
Plasma Concentrations ◽  
In Vivo Model ◽  
Forearm Circulation ◽  
Von Willebrand ◽  
Local Release ◽  
Willebrand Factor

SummaryThe effects on blood flow and plasma fibrinolytic and coagulation parameters of intraarterial substance P, an endothelium dependent vasodilator, and sodium nitroprusside, a control endothelium independent vasodilator, were studied in the human forearm circulation. At subsystemic locally active doses, both substance P (2-8 pmol/min) and sodium nitroprusside (2-8 μg/min) caused dose-dependent vasodilatation (p <0.001 for both) without affecting plasma concentrations of PAI-1, von Willebrand factor antigen or factor VIII:C activity. Substance P caused local increases in t-PA antigen and activity (p <0.001) in the infused arm while sodium nitroprusside did not. At higher doses, substance P increased blood flow and t-PA concentrations in the noninfused arm. We conclude that brief, locally active and subsystemic infusions of intraarterial substance P cause a rapid and substantial local release of t-PA which appear to act via a flow and nitric oxide independent mechanism. This model should provide a useful and selective method of assessing the in vivo capacity of the forearm endothelium to release t-PA acutely.

ANTIFUNGAL EFFICACY OF SOME INDIGENOUS PLANTS EXTRACT AGAINST RHIZOPUS STOLONIFER, THE CAUSAL AGENT OF WET ROT DISEASE OF POTATO (SOLANUM TUBEROSUM)

1970 ◽  
pp. 01
Author(s):  
Tijjani Ahmadu ◽  
Abdulaziz Bashir Kutawa ◽  
Jafar Sani Adam ◽  
Muhammad Abdulhadi ◽  
Mohammed Iliya
Keyword(s):  
Solanum Tuberosum ◽  
West African ◽  
Control Treatment ◽  
Syzygium Aromaticum ◽  
Rhizopus Stolonifer ◽  
Indigenous Plants ◽  
Piper Guineense ◽  
Mycelia Growth ◽  
Rot Disease ◽  
Plants Extract

Potato, (Solanum tuberosum (L.)) is a valuable stable food grown for its edible starchy tuber. This work was aimed to test the efficacy of indigenous plants extract for controlling wet rot disease of potato caused by Rhizopus stolonifer. The fungi was isolated from decaying bread and grown on potato dextrose agar (PDA) plates. Ripe Ginger (Zingiber officinale) (rhizome), West African pepper (Piper guineense) flower, Clove (Syzygium aromaticum) seed were collected from Muda Lawal Market, Bauchi, Nigeria. The dried seed were grinded using blender to get ginger, clove and West African pepper powder. Radial mycelia growth of Rhizopus stolonifer varied significantly (p≤0.01) with the application of different plant extracts. Mycelia growth of Rhizopus stolonifer was found to be low in potatoes treated with West African pepper (0.26 cm) than those treated with ginger (0.32 cm) and clove (0.33 cm). However, as observed from the result, ginger and clove did not differ statistically in their effect on Rhizopus mycelia growth (in vitro) but showed a better effect than the control treatment (0.40 cm). Inhibition of the mycelia growth by the West African pepper seed extract is an indication that it is fungicidal.

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