scholarly journals Effect of Pre-harvest Calcium Chloride and Salicylic Acid Spray on Morphological and Biochemical Traits of Guava (Psidium guajava)

2021 ◽  
Author(s):  
Lochan Kaushik ◽  
Rahul Kumar ◽  
Dilip Kumar Reddy ◽  
Prashant Kaushik
Keyword(s):  
Salicylic Acid ◽  
Calcium Chloride ◽  
Fruit Set ◽  
Foliar Spray ◽  
Psidium Guajava ◽  
Fruit Weight ◽  
Cell Component ◽  
Biochemical Traits ◽  
Tropical Fruit ◽  
Nitrogen Phosphorus

Guava is a small, tropical fruit tree grown in various tropical and subtropical regions. Salicylic acid (SA) is a phenolic compound that enhances disease resistance and delays the fruit ripening process. Calcium is an essential cell component that delays ripening, particularly softening of the fruit. The effect of foliar spray of CaCl2, and SA, on the physical and biochemical traits of guava was investigated in the present investigation. The application of CaCl2 2% + SA 2mM was more effective as compared with both when applied alone. The data were recorded on fruit set (%), fruit weight (g), fruit length (cm), fruit diameter (cm), fruit yield (kg), ripening period (days), TSS, acidity, total sugar, ascorbic acid, nitrogen, phosphorus, potassium. CaCl2 2% + SA 2mM was showed better performance in all cases, followed by SA 2mM and CaCl2 2%. Overall, this work determines the influence on guava's essential traits by pre-harvest calcium chloride and salicylic acid.

The effects of date pollinizer variety and pollination time on fruit set and yield of Medjhol date palm

2014 ◽  
Vol 2 (2) ◽  
pp. 67-71 ◽  
Author(s):  
Abdoul Amir Rahnama ◽  
Esmaeil Rahkhodaei
Keyword(s):  
Date Palm ◽  
Fruit Set ◽  
Block Design ◽  
Male Flower ◽  
Fruit Weight ◽  
Palm Fruit ◽  
Tropical Fruit ◽  
Male And Female ◽  
Time Interaction ◽  
Female Flowers

Date palm is unisexual, being either male or female. Male and female flowers grow on buds called Spathe, which opens naturally when fully mature. It is easy to identify the male and female flowers. Under the method of manual pollination, pollen from a male flower is smeared over female flowers. The pollen variety and pollination time have important effects on date palm fruit set, yield and quality. This experiment was carried out to study the effect of date pollinizer variety and pollination time on fruit set, growth and development of Medjhol date palm variety, in date palm garden of date palm and tropical fruit research institute of Iran during three years from 2009 to 2011. The trail was randomized complete block design in factorial manner with three pollen variety as Ghaname, Vardy, and Samesmave, two pollination time as 1-3 days before or after spathe opening and four replication. The results showed that the Vardy pollen had significant effects and increased the fertility percent and fruit yield, rather than two other pollen varieties. The pollen variety had no significant effects on fruit quality as total sugar, acidity, and bricx. The pollination time before spathe opening significantly increased fertility percent, decreased fruit weight and date palm yield. Finally the pollen variety and pollination time interaction effects showed that, application of Vardy pollen from 1-3 days after spathe opening with the most production date palm yield, equal 19.9 kilogram per any date palm trees, so this treatment is the best and are recommended.

Control of post-harvest anthracnose infection in guava (Psidium guajava) fruits with phosphites, calcium chloride, acetyl salicylic acid, hot water, and 1-MCP

2015 ◽  
Vol 56 (3) ◽  
pp. 330-340 ◽  
Author(s):  
André Freire Cruz ◽  
Nathalia Lima Medeiros ◽  
Gustavo Lessa Benedet ◽  
Maira Borges Araújo ◽  
Carlos Hidemi Uesugi ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Calcium Chloride ◽  
Psidium Guajava ◽  
Hot Water ◽  
Acetyl Salicylic Acid ◽  
Post Harvest

scholarly journals Effects of Salicylic Acid and Calcium Chloride on Heat Tolerance of Poinsettia

HortScience ◽  
2019 ◽  
Vol 54 (3) ◽  
pp. 499-504 ◽  
Author(s):  
Kuan-Hung Lin ◽  
Shao-Bo Huang ◽  
Chun-Wei Wu ◽  
Yu-Sen Chang
Keyword(s):  
Salicylic Acid ◽  
Heat Stress ◽  
Calcium Chloride ◽  
Heat Tolerance ◽  
Foliar Spray ◽  
High Temperature Stress ◽  
Growth Patterns ◽  
Antioxidant Enzyme Activities ◽  
Bud Sprouting ◽  
Lateral Bud

Exogenous application of either salicylic acid (SA) or calcium chloride (CaCl2) to alleviate heat stress has been extensively studied. However, the effects of combined SA and CaCl2 treatment on the heat tolerance of poinsettia have been poorly studied. This study investigated the role of a foliar spray comprising SA and CaCl2 in managing heat tolerance of three poinsettia (Euphorbia pulcherrima Willd.) cultivars, Noel, Winter Rose (WR), and Ice Punch’ (IP). Plants were pretreated with SA, CaCl2, or combined SA and CaCl2 and then exposed to a temperature of 42 °C for 1 hour. Changes in the relative injury (RI) percentage, malondialdehyde (MDA) content, and antioxidant enzyme activities were determined. All plants were then placed in an environment-controlled greenhouse for 14 days and evaluated. Lateral bud sprouting (%), new leaf numbers, and phenotypic appearance were recorded. Results revealed that the three poinsettia cultivars varied in their appearance, morphological growth patterns, and ability to tolerate high-temperature stress. Plant growth of ‘Noel’ was more robust than that of ‘WR’ and ‘IP’, which were considerably affected by heat stress, resulting in brown, withered leaves and defoliation. In general, the effects of the combined application of SA and CaCl2 on heat-tolerant ‘Noel’ were superior to those of individual applications and no treatment (for control groups) in terms of the RI percentage, lateral bud sprouting (%), and appearance under heat stress. Application of combined SA and CaCl2 for ‘Noel’ plants was more beneficial for enhancing catalase activity and resulted in the effective alleviation of decreased malondialdehyde content under heat stress. Treatment including 200 μΜ SA and 10 mm CaCl2 may alleviate heat stress and may prove useful in breeding programs focused on improving poinsettia cultivars.

scholarly journals Effects of Foliar Applications of Some Macro and Micro Nutrients on Yield, Quality Attributes of Guava (Psidium Guajava L.)

2021 ◽  
Vol 50 (4) ◽  
pp. 1159-1164
Author(s):  
Hemant Saini ◽  
Rajender Kumar Godara ◽  
Poonam Saini ◽  
- Vijay ◽  
- Sourabh
Keyword(s):  
Foliar Application ◽  
Fruit Size ◽  
Winter Season ◽  
Foliar Spray ◽  
Psidium Guajava ◽  
Fruit Weight ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Yield Quality ◽  
Benefit Cost

Effects of foliar applied macro (NPK) and micro nutrients (Fe, Mn, Zn, Cu and B) at different time on yield, quality and benefit: cost ratio of rainy and winter season guava were evaluated in north western Haryana, India. The two season’s data depicted that physico- chemical characters with respect to fruit set, fruit retention, fruit size, average fruit weight and yield were significantly increased with foliar application of macro and micro nutrients at vegetative, flowering and fruiting stage (T7). The shoot C: N ratio was also found highest with T7 foliar treatment which was followed by T5 in both the seasons. The T7 foliar spray resulted in maximum benefit: cost ratio in both the seasons. Proper fertilization strategies can help fruit growers to get good yield and quality fruits. Bangladesh J. Bot. 50(4): 1159-1164, 2021 (December)

scholarly journals Postharvest calcium chloride application maintains shelf life and quality of loquat (Eriobotrya japonica L.) fruit

2021 ◽  
pp. 1-6
Author(s):  
Shaukat Hussain ◽  
Zahoor Hussain ◽  
Faheem Khadija ◽  
Muhammad Raza Salik ◽  
Mujahid Ali ◽  
...  
Keyword(s):  
Shelf Life ◽  
Calcium Chloride ◽  
Room Temperature ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Eriobotrya Japonica ◽  
Tropical Fruit ◽  
Internal Browning

Loquat (Eriobotrya japonica L.) is an important sub-tropical fruit with very limited postharvest life. Therefore, in the current study, we investigated the effect of calcium chloride (CaCl2) treatments on the shelf life and quality of loquat fruit. After harvest loquat fruit treated with different concentrations of CaCl2 viz. 2%, 4% and 6% for 2 min were kept at room temperature (30±2oC) for 5 and 10 days. Untreated fruit were kept as control. The results showed that fruit treated with 6% CaCl2 exhibited minimum fruit weight loss (9.1%), external browning (8.83%), and internal browning (9.1%) after 10 days shelf period in contrast with control fruit. Lowest total soluble solids contents (9.11%), highest titratable acidity (0.53%) and juice (28%) contents were found in fruit treated with 6% CalCl2 as compared to other treatments. In conclusion, among the tested treatments, application of highest level of CaCl2 (6%) effectively maintained the quality of loquat fruit a room temperature.

scholarly journals Effect of Growth Regulators and Organics on Growth and Yield of Spiny Brinjal Variety VRM (Br) -1

2021 ◽  
pp. 222-229
Author(s):  
S. Nanthakumar ◽  
C. Pravin Kumar ◽  
P. Thilagam
Keyword(s):  
Salicylic Acid ◽  
Leaf Area ◽  
Growth Regulators ◽  
Field Experiments ◽  
Solanum Melongena ◽  
Foliar Spray ◽  
Fruit Weight ◽  
Growth And Yield ◽  
Area Index ◽  
Maximum Value

Two field experiments were carried out at Horticultural College, Kalavai to study the effect of growth regulators and organics on growth and yield of spiny brinjal (Solanum melongena) var.VRM-1. Growth regulators viz., Salicylic acid @ 200 ppm, Brassinosteriods  @ 0.1 ppm, Triacontanol @ 5 ppm and NAA @ 40 ppm and organics viz., Seaweed extract @ 1.0%, Humic acid @ 1.0%, Panchagavya @ 5.0% and Vermiwash @ 5.0% were tested and applied as foliar spray in spiny brinjal var VRM-1. Among the treatments tested, Panchagavya treatment recorded maximum value with regard to plant height (85.45 cm), leaf area (131.59 cm),  leaf area index (3.66), branches per plant (21.3 Nos) , flowers per plant (55.5 Nos), fruits per plant (20.9 Nos), fruit length (5.8 cm), fruit circumference (14.7 cm)  and individual fruit weight (82.1 g). Brassinosteroids treatment found to be effective in increasing root length (22.75 cm).

Evaluasi Keragaan Beberapa Hibrida Semangka Koleksi Balai Penelitian Tanaman Buah Tropika

2019 ◽  
Vol 15 (2) ◽  
pp. 101-105
Author(s):  
Makful Makful ◽  
Kuswandi Kuswandi ◽  
Sahlan Sahlan ◽  
Mega Andini
Keyword(s):  
Skin Color ◽  
Sweet Taste ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Hybrid Breeding ◽  
Skin Thickness ◽  
Tropical Fruit ◽  
Total Soluble Solids ◽  
Soluble Solid ◽  
High Yielding Varieties

Hybrid breeding of watermelon has led to the formation of high-yielding varieties. The objectives of the research were to determine the performance of hybrid watermelon of the Indonesian Tropical Fruit Research Institute (ITFRI) collection and to evaluate the superiority of each hybrid. The research has been conducted at Sumani Experimental Garden, ITFRI, Solok, West Sumatera, from April to July 2016. The material used consisted of 19 cross combinations. The data from this descriptive study were presented in the form of averages and pictures. The results showed that the hybrids that were tested showed diversity in size, fruit skin color, flesh color, skin thickness and fruit sweetness. Hybrids with three excellent characters, i.e. medium fruit weight, high total soluble solids (TSS) value, and moderate rind thickness, were not yet obtained. Hybrids that had the superiority in term of sweet taste and shelf life were BT1 × SGP, BT4 × BT4P, BT5 × BT4, BT6 × SGP and SGP × BT6. Keywords: hybrid, performance, total soluble solids, watermelon   ABSTRAK Pemuliaan hibrida pada semangka mengarah kepada pembentukan varietas berdaya hasil tinggi. Penelitian bertujuan untuk mengetahui keragaan hibrida semangka koleksi Balitbu Tropika dan untuk mengevaluasi keunggulan masing-masing hibrida Penelitian dilaksanakan di Kebun Percobaan Sumani, Balitbu Tropika, Solok, Sumatera Barat, dari bulan April sampai dengan Juli 2016. Materi yang digunakan terdiri dari 19 kombinasi persilangan. Data hasil penelitian deskriptif ini ditampilkan dalam bentuk rataan dan gambar. Hasil penelitian menunjukkan bahwa hibrida yang diuji memiliki keragaman dalam ukuran, warna kulit buah, warna daging buah, ketebalan kulit buah dan kemanisan. Belum ditemukan hibrida yang memiliki tiga karakter unggul, yang terdiri dari bobot buah sedang, total padatan terlarut (total soluble solid) tinggi, dan kulit buah agak tebal. Hibrida yang memiliki keunggulan berupa rasa manis dan tahan simpan adalah BT1 × SGP, BT4 × BT4P, BT5 × BT4, BT6 × SGP dan SGP × BT6. Kata kunci: hibrida, keragaan, semangka, total padatan terlarut

scholarly journals Promotion of Growth and Physiological Characteristics in Water-Stressed Triticum aestivum in Relation to Foliar-Application of Salicylic Acid

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1316
Author(s):  
Abida Parveen ◽  
Muhammad Arslan Ashraf ◽  
Iqbal Hussain ◽  
Shagufta Perveen ◽  
Rizwan Rasheed ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Salicylic Acid ◽  
Antioxidant Enzymes ◽  
Water Stress ◽  
Photosynthetic Pigments ◽  
Foliar Spray ◽  
Field Capacity ◽  
Available Water ◽  
Drought Tolerant ◽  
Growth Attributes

The present work reports the assessment of the effectiveness of a foliar-spray of salicylic acid (SA) on growth attributes, biochemical characteristics, antioxidant activities and osmolytes accumulation in wheat grown under control (100% field capacity) and water stressed (60% field capacity) conditions. The total available water (TAW), calculated for a rooting depth of 1.65 m was 8.45 inches and readily available water (RAW), considering a depletion factor of 0.55, was 4.65 inches. The water contents corresponding to 100 and 60% field capacity were 5.70 and 1.66 inches, respectively. For this purpose, seeds of two wheat cultivars (Fsd-2008 and S-24) were grown in pots subjected to water stress. Water stress at 60% field capacity markedly reduced the growth attributes, photosynthetic pigments, total soluble proteins (TSP) and total phenolic contents (TPC) compared with control. However, cv. Fsd-2008 was recorded as strongly drought-tolerant and performed better compared to cv. S-24, which was moderately drought tolerant. However, water stress enhanced the contents of malondialdehyde (MDA), hydrogen peroxide (H2O2) and membrane electrolyte leakage (EL) and modulated the activities of antioxidant enzymes (superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as accumulation of ascorbic acid (AsA), proline (Pro) and glycine betaine (GB) contents. Foliar-spray with salicylic acid (SA; 0, 3 mM and 6 mM) effectively mitigated the adverse effects of water stress on both cultivars. SA application at 6 mM enhanced the shoot and root length, as well as their fresh and dry weights, and improved photosynthetic pigments. SA foliage application further enhanced the activities of antioxidant enzymes (SOD, POD, and CAT) and nonenzymatic antioxidants such as ascorbic acid and phenolics contents. However, foliar-spray of SA reduced MDA, H2O2 and membrane permeability in both cultivars under stress conditions. The results of the present study suggest that foliar-spray of salicylic acid was effective in increasing the tolerance of wheat plants under drought stress in terms of growth attributes, antioxidant defense mechanisms, accumulation of osmolytes, and by reducing membrane lipid peroxidation.

scholarly journals Utilization of Mango, Apple and Banana Fruit Peels as Prebiotics and Functional Ingredients

Agriculture ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 584
Author(s):  
Hafza Fasiha Zahid ◽  
Chaminda Senaka Ranadheera ◽  
Zhongxiang Fang ◽  
Said Ajlouni
Keyword(s):  
Lactobacillus Rhamnosus ◽  
Fruit Weight ◽  
Banana Fruit ◽  
Fruit Peel ◽  
Tropical Fruit ◽  
Functional Ingredients ◽  
Potential Applications ◽  
Mango Peel ◽  
Pharmaceutical Industries ◽  
Physical And Chemical

Among the waste by-products generated by the fruit industry (peels, seeds, and skins), fruit peel constitutes the major component. It is estimated that fruit peel accounts for at least 20% of the fresh fruit weight. Fruit peels are considered as major sources of dietary fiber and anticipated to be successfully utilized as prebiotics. This study examined the chemical composition, functional properties and the prebiotic effects of three major tropical fruit peels (apple, banana and mango). The prebiotic effect was tested using three commercial probiotic strains (Lactobacillus rhamnosus, L. casei and Bifidobacterium lactis) individually and in combination. Each probiotic culture was fortified with different concentration (0%, 2% and 4%) of selected fruit peel powder (FPP). Results revealed that all tested FPP significantly (p < 0.05) enhanced the probiotics viable counts, which reached >10 logs after 24 h of incubation. However, the concentration of 2% and 4% FPP showed no significant differences (p > 0.05) on the probiotic viable counts. Additionally, the prebiotic effects of FPP were the same when applied to individual and mixed cultures. This investigation demonstrated that small amount (2%) of apple, banana and mango peel powder could be successfully utilized as prebiotics to enhance the growth of lactic acid bacteria (LAB). Additionally, the studied physical and chemical characteristics of FPP demonstrated their potential applications in the food and pharmaceutical industries as functional ingredients.

Acetyl salicylic acid alleviates chilling-induced damage in muskmelon seedlings

2007 ◽  
Vol 87 (3) ◽  
pp. 581-585 ◽  
Author(s):  
Ahmet Korkmaz ◽  
Murat Uzunlu ◽  
Ali Riza Demirkiran
Keyword(s):  
Salicylic Acid ◽  
Cucumis Melo ◽  
Chilling Stress ◽  
Foliar Spray ◽  
Dry Weight ◽  
Acetyl Salicylic Acid ◽  
Signal Molecule ◽  
Stress Indicator ◽  
Shoot Dry Weight ◽  
Significant Difference

Salicylic acid (SA) is a common plant-produced signal molecule that is responsible for inducing tolerance to a number of biotic and abiotic stresses. An experiment was, therefore, conducted to test whether acetyl salicylic acid (ASA) application at various concentrations through seed immersion or foliar spray would protect muskmelon [Cucumis melo L. (Reticulatus Group)] seedlings subjected to chilling stress. Twenty-one-day-old plants pre-treated with ASA (0, 0.1, 0.25, 0.50 or 1.0 mM) were subjected to chilling stress for 72 h at 3 ± 0.5°C. ASA, applied either through seed immersion or foliar spray, was effective within the range of 0.1 to 1 mM in inducing tolerance to chilling stress in muskmelon seedlings; however, there was no significant difference between application methods. ASA significantly and curvilinearly affected all seedling growth and stress indicator variables tested except shoot dry weight. The best protection was obtained from seedlings pre-treated with 0.5 mM ASA. The highest ASA concentration used was slightly less effective in providing chilling stress protection. Even though both methods provided similar means of protection, due to its simplicity and practicality, immersion of muskmelon seeds prior to sowing in 0.5 mM ASA would be a more desirable method to induce tolerance to chilling stress. Key words: Cucumis melo, aspirin, chilling stress tolerance, gas exchange, electrolyte leakage

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