Physiological disorders.

2021 ◽  
pp. 214-222
Author(s):  
Nor Elliza Tajidin ◽  
Munirah Mohamad ◽  
Azimah Hamidon ◽  
Hamizah Hassan ◽  
Siti H. Ahmad
Keyword(s):  
Chilling Injury ◽  
Nutrient Deficiency ◽  
Postharvest Quality ◽  
Micronutrient Deficiencies ◽  
Nutritional Disorder ◽  
Guava Fruit ◽  
Physiological Disorders ◽  
Fruit Drop ◽  
Metabolic Activities ◽  
Internal Browning

Abstract Guavas are highly perishable fruits where the production and postharvest quality of guava are affected by micronutrient deficiencies that can lead to physiological disorders. Environmental variables such as temperature, light, aeration and nutritional imbalances can also result in a disturbance in the plant metabolic activities and cause physiological disorders. It is crucial to understand several technical terms which identify the physiological and nutritional disorder symptoms, especially on guava fruit; for example, bronzing, chlorosis, lesion, scorching and others. This chapter discusses primary physiological disorders, including chilling injury, external and internal browning, sunscald, bronzing, fruit drop and nutrient deficiency.

scholarly journals Role of Different Abiotic Factors in Inducing Pre-Harvest Physiological Disorders in Radish (Raphanus sativus)

Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2003
Author(s):  
Ayesha Manzoor ◽  
Muhammad Ajmal Bashir ◽  
Muhammad Saqib Naveed ◽  
Kaiser Latif Cheema ◽  
Mariateresa Cardarelli
Keyword(s):  
Management Practices ◽  
Plant Density ◽  
Abiotic Factors ◽  
Moisture Stress ◽  
Physiological Disorders ◽  
Comprehensive Knowledge ◽  
Metabolic Activities ◽  
Growing Conditions ◽  
Root Tissues ◽  
Internal Browning

Radish, one of the important root vegetables, is widely grown in the world due to its easy cultivation, short duration, growing habit, and adaptability to various growing conditions. However, it is still extremely difficult to produce good quality radish roots due to its vulnerability to different preharvest physiological disorders. Important physiological disorders that significantly reduce the yield and quality of radish are forking, pithiness/sponginess, cracking/splitting, hollowness, and internal browning. Different abiotic factors like moisture stress, temperature fluctuation, growing medium, nutrient imbalance, plant density and harvesting time cause a disturbance in the metabolic activities of root tissues that produce non-marketable roots. Therefore, this review provides a detail insight on the causes, physiology of these disorders, and the management practices to prevent them to produce commercial quality roots. This comprehensive knowledge will not only help the growers, but it will provide relative information for researchers as well to control these disorders through breeding innovations and biotechnological tools.

Guava (Psidium guajava L.) Fruit Coating with Gum – Arabic for Quality and Fruit Fly Control

1970 ◽  
pp. 01-04
Author(s):  
Esameldin B. M. Kabbashi, Ghada H. Abdelrahman and Nawal A. Abdlerahman
Keyword(s):  
Shelf Life ◽  
Gum Arabic ◽  
Fruit Fly ◽  
Psidium Guajava ◽  
Postharvest Quality ◽  
Guava Fruit ◽  
Fruit Shelf Life ◽  
Fly Control ◽  
And Control ◽  
Subtropical Fruit

Guava (Psidium guajava L.) is a lovely tropical and subtropical fruit that originates in Mexico, Central America, and then taken to other distant and near parts around the world. In Sudan this popular fruit is produced in orchards and household and is so profitable but yet attacked by a lot of fruit fly species of the Genera Ceratitis and Bactrocera and the result is a loss of more than 70%. This research aimed at evaluating the effect of Gum Arabic coating (GAC) in extending the shelf life of guava fruit and disinfesting it from these notorious pests. Guava fruits from Kadaro orchards, Khartoum North, were tested using seven concentrations of Gum Arabic solutions. The results reflect that 1: 4 (25%) and 1: 8 (12.5%) (GA: water) concentrations attained 56 and 40% disinfestation, respectively whereas the other lower concentrations effected corresponding results in a range from 20 – 08%. The reduction in maggots per test fruit reached upto 188% as compared to the control.  The highest concentrations (1: 4 & 1: 8) effected a sustainability of 52% in fruit firmness (FF) with an average of medium (3) FF compared to soft FF (4) in the control. The corresponding results in other lower concentrations (1: 16; 1: 32; 1: 64; 1: 72 & 1: 96) were 36, 24, 24, 20 and 16%, respectively. In addition to an average FF of 4 (soft) for all these concentrations and 5 (very soft) for all the corresponding controls. Nevertheless, the sustainability of fruit color (FC) effected by the test concentrations was 52, 44, 24, 22, 24, 20, and 24%, respectively. Regarding these results, the two highest test concentrations effected a sizeable disinfestation and control of fruit flies and a good extension of shelf life of guava in Khartoum State. These findings support using this treatment as an effective IPM tool to extend guava fruit shelf life and upgrading its postharvest quality.

Ameliorative effect of gum arabic, oleic acid and/or cinnamon essential oil on chilling injury and quality loss of guava fruit

2020 ◽  
Vol 266 ◽  
pp. 109255 ◽  
Author(s):  
Rasool Etemadipoor ◽  
Abdolmajid Mirzaalian Dastjerdi ◽  
Asghar Ramezanian ◽  
Sakineh Ehteshami
Keyword(s):  
Oleic Acid ◽  
Essential Oil ◽  
Chilling Injury ◽  
Gum Arabic ◽  
Quality Loss ◽  
Guava Fruit ◽  
Ameliorative Effect ◽  
Cinnamon Essential Oil

Effects of 1-MCP on postharvest quality and internal browning of white-flesh loquat fruit during cold storage

Fruits ◽  
2017 ◽  
Vol 72 (2) ◽  
pp. 67-73
Author(s):  
G. Liguori ◽  
◽  
V. Farina ◽  
O. Corona ◽  
A. Mazzaglia ◽  
...  
Keyword(s):  
Cold Storage ◽  
Postharvest Quality ◽  
Internal Browning

scholarly journals Pectic and Galacturonic Acid Oligosaccharides on the Postharvest Performance of Citrus Fruits

HortScience ◽  
2017 ◽  
Vol 52 (2) ◽  
pp. 264-270 ◽  
Author(s):  
Araceli M. Vera-Guzman ◽  
Maria T. Lafuente ◽  
Emmanuel Aispuro-Hernandez ◽  
Irasema Vargas-Arispuro ◽  
Miguel A. Martinez-Tellez
Keyword(s):  
Ethylene Production ◽  
Galacturonic Acid ◽  
Chilling Injury ◽  
Maturity Stage ◽  
Citrus Paradisi ◽  
Citrus Fruits ◽  
Postharvest Losses ◽  
Physiological Disorders ◽  
Fruit Maturity ◽  
Pectic Oligosaccharides

Orange [Citrus sinensis (L.) Osbeck] and grapefruit (Citrus paradisi Macfad) citrus fruits are prone to develop different peel physiological disorders caused by storage at both chilling and nonchilling temperatures. The effect of galacturonic acid oligosaccharides (GAOs) and pectic oligosaccharides (POs) in reducing postharvest nonchilling peel pitting (NCPP), decay, and chilling injury (CI) in orange cv. Navelina and the effect of POs in reducing CI in grapefruit cv. Rio Red, were investigated. The incidence of these disorders was examined in fruits stored at chilling and nonchilling temperatures and at 90% to 95% relative humidity (RH). POs showed a better efficacy than GAOs in reducing postharvest losses in orange. The POs were able to reduce NCPP and decay in ‘Navelina’ fruits stored at 20 °C, irrespective of the fruit maturity stage. The application of 10 g·L−1 POs also reduced CI and the chilling-induced ethylene production in oranges and grapefruits maintained at the chilling temperature. Likewise, the decrease in ethylene production found in ‘Navelina’ fruits that developed NCPP during storage at the nonchilling temperature was related to lower peel damage. Moreover, results showed that POs do not induce an increase in ethylene when fruit are stored under conditions that do not cause stress-related injury to fruit. Therefore, POs efficacy in reducing postharvest physiological disorders is not likely mediated by ethylene. Overall results indicate that the application of POs may be an acceptable alternative to mitigate postharvest losses of citrus fruits.

scholarly journals Effect of foliar spray of zinc, iron and boron on the growth, yield and sensory characters of guava (Psidium guajava L.) Cv. Sardar L-49

2016 ◽  
Vol 8 (2) ◽  
pp. 701-704
Author(s):  
M. G. Bhoyar ◽  
M.V. Ramdevputra
Keyword(s):  
Zinc Sulphate ◽  
Foliar Application ◽  
Foliar Spray ◽  
Growth Yield ◽  
Psidium Guajava ◽  
Guava Fruit ◽  
Overall Acceptability ◽  
Combined Application ◽  
Fruit Drop ◽  
Sensory Parameters

The field experiment was carried to evaluate the response to the foliar application of micronutrients viz. zinc, iron and boron in single or in different combinations on guava (Psidium guajava L.) cv. Sardar L-49 for various growth, yield and sensory parameters. From various combinations of micronutrients growth characters were remain uninfluenced. Combination of 0.5% Zinc sulphate + 0.5% Ferrus sulphate + 0.3% Borax significantly influenced fruit per shoot (3.6), overall yield (57.1 kg/tree) and sensory characters like aroma (7.7), taste (8.1), flavour (8.2), texture (7.5) and also overall acceptability (7.9). Application of 0.3% Borax significantly influenced flowers per shoot (5.3). Minimum fruit drop was recorded with application of 0.5% Ferrus sulphate + 0.3% Borax and minimum fruit drop per shoot observed in 0.5% Zinc sulphate + 0.3% Borax foliar application. The present study indicated that combined application of micronutrients enhanced fruit set, minimized fruit drop and overall yield. This has resulted in improved sensory characters in the guava fruit. This will lure consumers with appealing fruit that would enable farmers to earn a decent sum of money.

scholarly journals POSTHARVEST QUALITY AND CHILLING INJURY OF “SUCCARY” POMEGRANATES AS AFFECTED BY DIFFERENT PACKAGING TYPES

2019 ◽  
pp. 1-11
Keyword(s):  
Vitamin C ◽  
Fruit Juice ◽  
Chilling Injury ◽  
Storage Period ◽  
Fruit Weight ◽  
Postharvest Quality ◽  
Harvest Time ◽  
Total Sugars ◽  
Poly Vinyl Chloride ◽  
Cling Film

Fully ripe 'Succary' pomegranate fruits were harvested from a private orchard in Ismailia, Egypt in 2015 & 2016 seasons. The fruits were packed in: 1- freely packed fruits (control) 2- sealed fresh bags of high ethylene absorption (HEA) 3- perforated polyethylene )PPE( 4- polyethylene (PE) film (stretchable cling film) 5- commercial PVC (poly vinyl chloride) pages. All packaging treatments were stored at 5 ºC and 90 – 95% RH for 12 weeks. Samples were taken every 2 weeks followed by 4 days at 20˚C. Fruit weight (g) rind thickness (mm), aril /fruit (%), juice content %, juice colour, SSC, acidity%, total sugars%, total phenols% and vitamin C were evaluated at harvest time. Chilling injury of the fruit was reduced by all packaging types. Changes in acidity, and SSC of the packed fruits were lower than that of freely packed fruits (control) during storage period. Cold storage at 5 °C with packaging treatments would be the best for preserving the freshness and vitamin C, increasing antioxidant activity, reducing chilling injury and maintaining fruit quality. Consequently, the fruits were more commercially acceptable.

Pearl Millet: boon in mineral deficiency: A review

2018 ◽  
Author(s):  
Rupesh P. Datir ◽  
Shaikh Adil ◽  
Amol S. Sahare
Keyword(s):  
Public Health Problem ◽  
Normal Growth ◽  
Child Growth ◽  
Micronutrient Deficiencies ◽  
Mineral Deficiency ◽  
Nutritional Disorder ◽  
Mineral Concentration ◽  
Number Of Children ◽  
Iron And Zinc ◽  
Zinc And Other Minerals

Mineral deficiency can be defined as a condition that caused due to reduced level of any of the minerals essential to human health. Low mineral concentration may impair a function dependent on that mineral in a body. Minerals support normal growth and development through various biochemical reactions. Its deficiencies can lead to a variety of health problems, such as fatigue, weak bones or a low immunity and other disorders. A large section of today’s population is suffering from micronutrient deficiencies caused largely by deficiency of vitamins and minerals. Iron and Zinc deficiency is the most common and widespread nutritional disorder in the world, and is a public health problem in both developed and developing countries. Widespread malnutrition specially among children is of great concern as it affects child growth, cognitive development and resistance to infection. Malnutrition due to mineral deficiency is a great concern in India as large number of children are suffering mineral deficiency due to insufficient mineral rich diet. Pearl Millets is important cereal crop and provides various minerals which are required for the wellbeing of a human body. It is enriched with Iron, Zinc and other minerals and its inclusion in diet through various food products could be useful in battling mineral deficiency.

Sign in / Sign up

Export Citation Format

Share Document