Effect of Ethrel on the Starch Sugar Changes of Off-Season Fruits of Mango (M&lt;i&gt;angifera indica&lt;/i&gt; l. Var. Neelum) during Ripening

Venkatesan, T.; Tamilmani, C.

doi:10.56431/p-026q5m

Cited by 2 publications

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“…The grade of TPC in pear leaves is highly dependent on many factors, such as cultivar and infection diseases and or pests (Androetti et al, 2006). Venkatesan and Tamilmani (2010) noted that phenols compounds decreased during ripening, both in the control and treated fruits. Also, the activity of peroxidase (PO) and polyphenoloxidase (PPO) of mango.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of Different Commercial Products on Controlling Date Palm Root Rot Under Greenhouse Conditions.

Shehata

Hassan

2023

Menoufia Journal of Plant Protection

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Disease incidence and disease severity of date palm root rot were evaluated on cvs.Barhey, Majdol and Zaghloul during 2021 and 2022 growing seasons in different locations. The highest percentages of disease incidence and disease severity were recorded in nursery located at Beheira governorate, where the lowest were recorded from new orchards in Giza and Qaloubiya governorates during 2021. Isolation trials of the naturally infected date palm root rot yielded four fungal species identified as Fusarium solani, F. moniliforme, F. semitectum and Lasiodiplodia theobromae. Pathogenicity test showed that all isolated fungi were able to induce root rot on date palm seedlings. The highest average disease severity was obtained from the infection with F. solani, followed by F. moniliforme. While, little symptoms showed on the roots inoculated by F. semitectum. Zaghloul cultivar was more susceptible than Barhey and Majdol under artificial inoculation carried out during the two years of the investigation. Efficacy of Biocontrol T34 12% WP (Trichoderma asperellum strain T34), Serenade ASO 1.34% SC, Uniform 39 % SE, Hexaten and Tshgarin 30%SL was evaluated in vitro and under greenhouse conditions for controlling root rot of date palm seedlings. Complete reduction in colony growth of the most frequent fungi was observed due to using Uniform 39 % SE, followed by Hexaten and Tshgarin 30%SL. T34 and Serenade ASO 1.34% SC recorded the lowest efficacy. However, under greenhouse conditions Uniform, Tshgarin and Hexaten gave the highest efficacy for controlling date palm root rot on the two cultivars, Barhey and Zaghloul during the two seasons, while the lowest efficacy was recorded after treatment with T34 and Serenade ASO, respectively. The highest values of total phenol in the three tested date palm cultivars were observed in Barhey cv., while the lowest production were recorded in cv. Zaghloul. The highest values of total phenols was observed after using Uniform and Tshgarin, while the lowest levels of total phenols were recorded by using Serenade ASO. The highest values of polyphenoloxidase activity (PPO) were recorded in cv. Barhey. While the lowest were recorded in cv. Zaghloul. The highest values of PPO were observed after treatment with Tshgarin, while the lowest levels were obtained by using Serenade ASO.

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Section: Discussionmentioning

confidence: 99%

Efficacy of Different Commercial Products on Controlling Date Palm Root Rot Under Greenhouse Conditions.

Shehata

Hassan

2023

Menoufia Journal of Plant Protection

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“…No.4' and 'Nam Dok Mai Si Tong' mangoes during storage at room temperature Ripening of mango fruit is triggered via the increase of ethylene production and respiration rate (Venkatesan and Tamilmani, 2011). Both cultivars of mangoes exhibited different levels of ethylene production and respiration rate despite being climacteric fruit and closely related cultivars.…”

Section: Changes In Respiration Rate and Ethylene Production Of 'Nam ...mentioning

confidence: 99%

Polyamine accumulation and responses of mango fruit to postharvest polyamine application

Wonnabussapawich

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Mango (Mangifera indicia L.) is a popular tropical fruit which has a great value in both domestic and international markets. Mango is a climacteric fruit which ethylene production increases dramatically, thus leading to a quick ripening process and a short postharvest life. Polyamines (PAs) have been reported to be involved in fruit ripening. Changes in endogenous free polyamines accumulation were measured in two mango cultivars; Nam Dok Mai No.4' and Nam Dok Mai Si Tong'. Mangoes were allowed to ripen at 25?1 ?C after harvest. It was found that Nam Dok Mai No.4' mango exhibited higher ethylene production, respiration rate, soluble solid contents and lower titratable acidity than Nam Dok Mai Si Tong' mango. During fruit ripening, Putrescine (PUT) content decreased and displayed no significant differences between both cultivars. SPD and SPM contents constitutionally increased and were higher in Nam Dok Mai Si Tong' mango than Nam Dok Mai No.4' mango. In addition, Nam Dok Mai No.4' mango, which had a higher ethylene production and a lower level of PAs showed greater market qualities than Nam Dok Mai Si Tong', which displayed a lower ethylene production. These results suggested that polyamines, especially spermidine (SPD) played a rejuvenating role and regulated mango fruit ripening. The increase in PAs contents may be related to a delay of mango ripening through the reduction of ethylene production. Application of polyamines after harvest also represents a safe and potentially effective method for improving quality and maintaining shelf life of mango fruit. Nam Dok Mai NO.4' mango was immerged in 0, 1, 2 and 4 mmol/L PUT for 20 minutes and stored at 14 ? for 9 days, then transferred to 25 ? for another 9 days. The physiological and chemical changes of treated fruit were measured on days 0, 9, 12, 15, and 18. The results showed the most effective treatment was 2 mmol/L PUT, which significantly reduced ethylene production, respiration rate, weight loss, total soluble solids, and increased titratable acidity. In addition, 2 mmol/L PUT treatment increased fruit firmness, reduced soluble pectin content, polygacturonase and pectin methyl esterase activities during storage period. Moreover, our results revealed that the exogenous application of 2 mmol/L PUT increased superoxide dismutase, catalase, guaiacol peroxidase, ascorbate peroxidase and glutathione reductase activities and total antioxidant activities by DPPH radical scavenging and FRAP during storage. The reduction of ethylene production was correlated with the increase of endogenous PAs after exogenous application of PUT. These findings suggested that postharvest exogenous application of 2 mmol/L PUT can be used as an effective method for prolonging storage life and maintaining the quality of Nam Dok Mai No.4' mango after harvest.

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Effect of Ethrel on the Starch Sugar Changes of Off-Season Fruits of Mango (M<i>angifera indica</i> l. Var. Neelum) during Ripening

Cited by 2 publications

References 0 publications

Efficacy of Different Commercial Products on Controlling Date Palm Root Rot Under Greenhouse Conditions.

Efficacy of Different Commercial Products on Controlling Date Palm Root Rot Under Greenhouse Conditions.

Polyamine accumulation and responses of mango fruit to postharvest polyamine application

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