Stem End Rind Breakdown Of Citrus Fruit A New Postharvest Physiological Disorder Of Lemon Fruit In Tucuman (Argentina)

2018 ◽  
Vol 2 (2) ◽  
Keyword(s):  
Citrus Fruit ◽  
Physiological Disorder ◽  
Lemon Fruit

scholarly journals Low temperature modulates natural peel degreening in lemon fruit independently of endogenous ethylene

2020 ◽  
Vol 71 (16) ◽  
pp. 4778-4796
Author(s):  
Oscar W Mitalo ◽  
Takumi Otsuki ◽  
Rui Okada ◽  
Saeka Obitsu ◽  
Kanae Masuda ◽  
...  
Keyword(s):  
Low Temperature ◽  
Citrus Fruit ◽  
Citrus Limon ◽  
Lemon Fruit ◽  
Ethylene Treatment ◽  
Low Temperature Storage ◽  
Endogenous Ethylene ◽  
Significant Expression ◽  
Storage Temperatures ◽  
Temperature Storage

Abstract Peel degreening is an important aspect of fruit ripening in many citrus fruit, and previous studies have shown that it can be advanced by ethylene treatment or by low-temperature storage. However, the important regulators and pathways involved in natural peel degreening remain largely unknown. To determine how natural peel degreening is regulated in lemon fruit (Citrus limon), we studied transcriptome and physiochemical changes in the flavedo in response to ethylene treatment and low temperatures. Treatment with ethylene induced rapid peel degreening, which was strongly inhibited by the ethylene antagonist, 1-methylcyclopropene (1-MCP). Compared with 25 ºC, moderately low storage temperatures of 5–20 °C also triggered peel degreening. Surprisingly, repeated 1-MCP treatments failed to inhibit the peel degreening induced by low temperature. Transcriptome analysis revealed that low temperature and ethylene independently regulated genes associated with chlorophyll degradation, carotenoid metabolism, photosystem proteins, phytohormone biosynthesis and signalling, and transcription factors. Peel degreening of fruit on trees occurred in association with drops in ambient temperature, and it coincided with the differential expression of low temperature-regulated genes. In contrast, genes that were uniquely regulated by ethylene showed no significant expression changes during on-tree peel degreening. Based on these findings, we hypothesize that low temperature plays a prominent role in regulating natural peel degreening independently of ethylene in citrus fruit.

scholarly journals HOLDING LEMON FRUIT AT 5 OR 15C BEFORE COLD TREATMENT REDUCES CHILLING INJURY

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1174c-1174 ◽  
Author(s):  
Laurie G. Houck ◽  
Joel F. Jenner ◽  
Jan Bianchi
Keyword(s):  
Chilling Injury ◽  
Cold Treatment ◽  
Citrus Fruit ◽  
Late Summer ◽  
Fruit Fly ◽  
The Other ◽  
Lemon Fruit ◽  
Actual Temperature ◽  
Arizona Desert ◽  
Fly Control

An approved quarantine treatment for Tephritid fruit fly control of citrus fruit requires fruit be held at 0.0-2.2C for 10-22 days, depending on fruit fly species involved and actual temperature attained. However, this treatment causes chilling injury (CI) in California-Arizona desert lemons harvested in late summer or early autumn. We found that temperatures at which lemons are held before cold treatment affects the susceptibility of lemon fruit to CI. Commercially packed lemons obtained from Yuma, AZ packinghouses in Sept.-Nov. 1987 and 1988 were held at 1C for 3 or 6 weeks, or cured for one week at 5, 15 or 30C, or at 15C for one week, followed by 30C for one week, before receiving the 1C cold treatment. Lemons cured one week at 5 or 15C before the cold treatment developed at least 25-30% less CI during 4 weeks peat treatment storage at 10C than noncured fruit. The other curing treatments were not as effective for reducing CI.

scholarly journals Influence of pH and NaHCO3 on Effectiveness of Imazalil to Inhibit Germination of Penicillium digitatum and to Control Postharvest Green Mold on Citrus Fruit

Plant Disease ◽  
2005 ◽  
Vol 89 (6) ◽  
pp. 640-648 ◽  
Author(s):  
J. L. Smilanick ◽  
M. F. Mansour ◽  
D. A. Margosan ◽  
F. Mlikota Gabler ◽  
W. R. Goodwine
Keyword(s):  
Citrus Fruit ◽  
Penicillium Digitatum ◽  
Resistant Isolate ◽  
Potato Dextrose Broth ◽  
Lemon Fruit ◽  
Green Mold ◽  
Sensitive Isolate ◽  
Residue Levels ◽  
Influence Of Ph

In vitro, spores of Penicillium digitatum germinated without inhibition between pH 4 and 7, but were inhibited at higher pH. Estimated concentrations of imazalil (IMZ) in potato-dextrose broth-Tris that caused 50% reduction in the germination of spores (ED50) of an IMZ-sensitive isolate M6R at pH 4, 5, 6, and 7 were 0.16, 0.11, 0.015, and 0.006 μg/ml, respectively. ED50 IMZ concentrations of an IMZ-resistant isolate D201 at pH 4, 5, 6, and 7 were 5.9, 1.4, 0.26, and 0.07 μg/ml, respectively. The natural pH within 2-mm-deep wounds on lemon was 5.6 to 5.1 and decreased with fruit age. IMZ effectiveness to control green mold and its residues increased with pH. The pH in wounds on lemon fruit 24 h after immersion in 1, 2, or 3% NaHCO3 increased from pH 5.3 to 6.0, 6.3, and 6.7, respectively. NaHCO3 dramatically improved IMZ performance. Green mold incidence among lemon fruit inoculated with M6R and treated 24 h later with IMZ at 10 μg/ml, 1% NaHCO3, or their combination was 92, 55, and 22%, respectively. Green mold among lemon fruit inoculated with D201 and treated 24 h later with water, IMZ at 500 μg/ml, 3% NaHCO3, or their combination was 96.3, 63.0, 44.4, and 6.5%, respectively. NaHCO3 did not influence IMZ fruit residue levels.

The diazepam-like sedative effects of vaporized essential oil from the Okinawan Kabuchii citrus fruit

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
Y Kobayashi ◽  
H Takemoto ◽  
Z Fu ◽  
E Shimizu ◽  
Y Kinjo
Keyword(s):  
Essential Oil ◽  
Citrus Fruit ◽  
Sedative Effects

Modern Technology for Image processing and Computer vision -A Review

2018 ◽  
Vol 1 (2) ◽  
pp. 17-23
Author(s):  
Takialddin Al Smadi
Keyword(s):  
Image Processing ◽  
Computer Vision ◽  
Augmented Reality ◽  
Video Compression ◽  
Video Processing ◽  
Vision System ◽  
Citrus Fruit ◽  
Modern Technology ◽  
Image And Video Processing ◽  
Depth Video

This survey outlines the use of computer vision in Image and video processing in multidisciplinary applications; either in academia or industry, which are active in this field.The scope of this paper covers the theoretical and practical aspects in image and video processing in addition of computer vision, from essential research to evolution of application.In this paper a various subjects of image processing and computer vision will be demonstrated ,these subjects are spanned from the evolution of mobile augmented reality (MAR) applications, to augmented reality under 3D modeling and real time depth imaging, video processing algorithms will be discussed to get higher depth video compression, beside that in the field of mobile platform an automatic computer vision system for citrus fruit has been implemented ,where the Bayesian classification with Boundary Growing to detect the text in the video scene. Also the paper illustrates the usability of the handed interactive method to the portable projector based on augmented reality.   © 2018 JASET, International Scholars and Researchers Association

Study Of Antimicrobial Activity By Aqueous Citrus Lemon Fruit Extracts (Citrus Lemon L.)

2018 ◽  
pp. 1
Author(s):  
حافظ عبدالفتاح الشريف ◽  
فاطمة محمد عمر ◽  
صلاح منصور الحاج عمر ◽  
خالد صابر عبدالرحمن الشلماني ◽  
يونس علي طيب
Keyword(s):  
Antimicrobial Activity ◽  
Lemon Fruit ◽  
Fruit Extracts

Navel Orange Pitting Stimulated by Waxing and High Storage Temperature

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 520b-520
Author(s):  
Huating Dou ◽  
Peter D. Petracek ◽  
Craig Davis
Keyword(s):  
High Temperature ◽  
Storage Temperature ◽  
Chilling Injury ◽  
Citrus Fruit ◽  
Navel Orange ◽  
Oil Glands ◽  
C Storage ◽  
High Storage Temperature ◽  
Florida Citrus ◽  
Citrus Varieties

Navel oranges are reportedly susceptible to postharvest peel disorders, including chilling injury and aging/stem end rind breakdown. These and other physiological disorders are sometimes given the common term “navel rind breakdown.” California citrus industry reports on recent incidences of navel rind breakdown suggested that some instances of this disorder were similar to “postharvest pitting,” a disorder that we have observed in a number of Florida citrus varieties. Thus, we decided to define the morphology and etiology of pitting of `Washington' navel orange (Citrus sinensis L.) peel. The disorder was characterized by the collapse of clusters of oil glands and was stimulated by wax application and high temperature (≥13 °C) storage. Internal ethanol levels of waxed fruit stored at high temperature (13 or 21 °C) were significantly higher among fruit that developed pitting than those that did not. The pitting observed in these studies is comparable to previously observed navel orange disorders that have occurred without known cause. Navel orange pitting is morphologically and etiologically distinct from chilling injury and aging/stem end rind breakdown, but is similar to postharvest pitting of Florida citrus fruit.

Use competition and water exchange in Marina Baja district, Alicante, Spain

2005 ◽  
Vol 5 (3-4) ◽  
pp. 265-272 ◽  
Author(s):  
T.T. Martí
Keyword(s):  
Water Exchange ◽  
Citrus Fruit ◽  
Water Markets ◽  
Tourist Industry ◽  
Related Services ◽  
Integrated Water Management ◽  
The North ◽  
Increasing Demand ◽  
Water Problems ◽  
Water Uses

The water problems in Marina Baja district, located in the north of Alicante Province, southeast Spain, gives rise to very interesting practices in the management of this scarce resource. The key issue in water use both in the Júcar Catchment and in Marina Baja district is the growing demand for water in inland areas for intensive crop irrigation (principally fruit, medlars and citrus fruit) and the growth in demand for water for urban use, as well as for use in the tourist industry and its related services mainly in the towns in the coastal areas, due to strong growth in tourism. This trend of increasing demand has created a tense situation as well as conflict between existing water uses and the need for integrated water management in the area. This step implies that procedures for water exchange contracts have to be developed, that are significantly different from emerging water markets.

Adsorption and Inhibiting Mild Steel Corrosion in Natural Lemon and Lime Citrus Fruit Juices by Alanine

2021 ◽  
Vol 7 (3) ◽  
Author(s):  
A. J. Ojo ◽  
A. A. Daniyan ◽  
P O. Atanda ◽  
O. E. Olorunniwo ◽  
O. A. Oyatogun ◽  
...  
Keyword(s):  
Mild Steel ◽  
Citrus Fruit ◽  
Steel Corrosion ◽  
Fruit Juices ◽  
Mild Steel Corrosion
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