Reduction of Soybean Root and Stalk Rots by Growth Substances Under Salt Stress Conditions

El-Hai, K.M. Abd; El-Metwally, M. A.; El-Baz, S. M.

doi:10.3923/ppj.2010.149.161

Cited by 19 publications

(11 citation statements)

References 9 publications

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“…This is may be due to plant seeds always requires treatment with fungicides to assure an adequate plant stand in the field. Similar findings were obtained by Abd-El-Kareem et al, (2004), Ali et al, (2009) and Abd El-Hai et al, (2010).…”

Section: Seed Qualitysupporting

confidence: 91%

Down-Regulation of Damping-off and Root Rot Diseases in Lentil Using kinetin and Trichoderma.

El-Hai¹,

Ali²

2017

Journal of Plant Protection and Pathology

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Damping-off and root rot diseases caused by several soil-borne pathogenic fungi are the most responsible for high reduction in lentil yield. The aim of the present study is to evaluate the efficiency of kinetin and Trichoderma for controlling these diseases and lentil productivity compared with Rizolex-T50 fungicide. Rhizoctonia solani and Fusarium oxysporum are the common causal pathogens which isolated from infected lentil collected from different fields of Dakahlia Governorate, Egypt. In greenhouse: both tested fungi were pathogenic and caused pre-and post-emergence damping-off. Lentil cultivar Giza 9 was more susceptible for infected with both pathogenic fungi. F. oxysporum was most aggressive in post-emergence damping-off. On the other side, Rizolex-T50 recorded the highest reduction in emergence damping-off in both lentil cultivars, Trichoderma harzianum come next. Anatomically, R. solani caused complete disruption of the epidermal and cortical cells in both cultivars of lentil roots, Giza 9 was very affective. In field: Lentil; Giza 4 cultivar was more tolerant for infected with dampingoff and root rot diseases under natural infection. The application of both Trichoderma species and two concentrate of kinetin led to significant reduction in damping-off and dead plants. T. harzianum was more effective. Giza 4 was the best cultivar in photosynthetic pigments as compared with Giza 9. Except Rizolex-T50, all treatments increased significantly photosynthetic pigments. Kinetin at 100 ppm was more effective. Meanwhile, T. harzianum gave the highest values of total phenols content. Kinetin at level 100 ppm gave the highest average of growth parameters (plant height and branches number plant-1)and yield components (pods number plant-1 , 1000 seed weight and seed yield (kg/fed)). Giza 4 cultivar recorded the highest yield, while Giza 9 was the best in seed quality. The highest seed protein% occurred under the application of T. viride. Meanwhile, kinetin at 100 ppm gave the high phosphorus percentage in the seed of lentil. Therefore, application of kinetin at 100 ppm as well as T. harzianum as seed soaking could be recommended for controlling soil-borne diseases in addition to improving growth and productivity of lentil.

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Section: Seed Qualitysupporting

confidence: 91%

Down-Regulation of Damping-off and Root Rot Diseases in Lentil Using kinetin and Trichoderma.

El-Hai¹,

Ali²

2017

Journal of Plant Protection and Pathology

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“…The highest level of TPC was obtained from sodium benzoate treatment. Increase levels of TPC following treatments of strawberry fruits with food preservatives reported herein was previously suggested to be involved in resistant mechanisms of plants to other plants pathogens (Abd El-Hai et al, 2010;Gogoi et al, 2001). Our data indicate that the high infected fruits contained a lot of TPC.…”

Section: Discussionsupporting

confidence: 69%

Impact of pre and post-harvest treatment with chemicals preservatives on Botrytis gray rot disease and fruit quality of strawberry

El-Fawy

El-Sharkawy

Ahmed

2020

Archives of Agriculture Sciences Journal

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This study focuses on the evaluation of some chemical food preservatives to control gray mold disease in strawberry fruits. Six compounds, i.e. acetic acid, sodium benzoate, benzoic acid, sodium citrate, citric acid and potassium citrate were tested at concentrations 10, 20, 40 and 80 mM for inhibiting mycelial growth of the pathogen. In vitro studies, data obtained showed that all treatments significantly (P ≤ 0.05) inhibited the mycelial growth of the pathogen. Sodium benzoate especially at concentration of 80 mM caused complete mycelial growth inhibition of the pathogen. Under laboratory conditions, dipping the strawberry fruits in solutions of these compounds were effective in reducing the disease severity. Also, applications of these compounds as fruits spraying gave a significant reduction of the disease. Sodium benzoate had a better effect on the disease in vitro and in vivo. Laboratory estimates showed that treated fruits with the tested compounds contained a high percentage of total soluble solids (TSS) compared to untreated fruits and healthy control. Also, titratable acidity (TA) increased in treated fruits compared to the healthy fruits; as a result, TSS/TA ratio was increased. Furthermore, treated fruits contained a high level of total phenol contents (TPC) compared to untreated fruits. All studied treatments improved the quality attributes of strawberry fruits, i.e. T.S.S, TA%, TSS/TA ratio and TPC. It is concluded that these compounds were effective on the disease, so they can be used as safe alternatives to fungicides in treating fruits to protect them from the fungal decay during storing or marketing.

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“…The reverse effect of salinity might be due to hormone imbalance (El-Saht, 1994), decrease protein building (Parida and Das, 2005) and decrease in chlorophyll content and metabolic activities (Abd El-Hai et al, 2010 andMohsen et al, 2013). Generally the harmful effects of salinity on plants may be due to deficit nutrients imbalance and phytotoxicity of ions (Abdelhamid et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Pre-Sowing Seed Treatment with some Organic Compounds for Controlling Root Rot Disease and Improving Faba Bean Productivity under Salinity Affected Soil Conditions

El-Hai¹,

El-Saidy

2016

Journal of Plant Production

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Greenhouse experiment was conducted to evaluate the pathogenicity of root rot fungi on faba bean plant. Lab. experiment was also conducted to study the effect of organic compounds and fungicide Rizolex-T50 on the linear growth of the tested pathogenic fungi. Two field experiments were also carried out to study the effect of organic compounds with different concentrations and fungicide Rizolex-T50 on reduction of root rot and enhancing some morphological, physiological characteristics and productivity of faba bean under saline affected soil conditions during 2013/2014 and 2014/2015 seasons. The results under greenhouse conditions indicated that all tested pathogenic fungi caused emergence damping-off. Rhizoctonia solani was the most effective in pre-emergence damping-off while, Fusarium solani gave the highest percentage of post-emergence damping-off. The pathogenic fungi caused anatomically deformation in root structure. Infected root with F. solani caused complete destruction of epidermal cells followed by degradation of cell wall in the cells of cortex. In vitro, Rizolex-T50 completely inhibited the growth of the tested pathogenic fungi. On the other hand, chitosan at 8 g/L was the most effective in reducing fungal growth followed by proline at 200 ppm. In vivo, the application of organic compounds counteracted the harmful effects of salinity. Humic acid highly reduced pre-and post-emergence damping-off and subsequently increased field emergence %. The high level of proline (200 ppm) was more effective in increasing morphological measurements (plant height, No. of branches and leaves/plant) and photosynthetic pigments i.e. chlorophyll a, b and carotenoids. While, the high concentration of HA (2000 ppm) significantly increased No. of pods/plant, seed yield/plant and 100-seed weight. Chitosan gave the highest phenols content followed by proline treatment. The high increase in carbohydrate content occurred under low level of HA (1000 ppm), followed by high level of proline (200 ppm). The efficacy of the tested organic compounds in control of root rot disease was reflected on the plant causing increase in yield components. It is suggested that pre-sowing seed soaking with HA (2000 ppm) or chitosan (8 g/L) or proline (200 ppm) could be considered as alternative fungicide for controlling root rot disease and increasing productivity of faba bean under salinity and natural infection conditions in the field.

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Reduction of Soybean Root and Stalk Rots by Growth Substances Under Salt Stress Conditions

Cited by 19 publications

References 9 publications

Down-Regulation of Damping-off and Root Rot Diseases in Lentil Using kinetin and Trichoderma.

Down-Regulation of Damping-off and Root Rot Diseases in Lentil Using kinetin and Trichoderma.

Impact of pre and post-harvest treatment with chemicals preservatives on Botrytis gray rot disease and fruit quality of strawberry

Pre-Sowing Seed Treatment with some Organic Compounds for Controlling Root Rot Disease and Improving Faba Bean Productivity under Salinity Affected Soil Conditions

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