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Yield Gap Analysis of Sweet Pepper in Protected Cultivations Between Korea and The Netherlands
Elize Kleijbeuker,Jeong Hyun Lee 한국원예학회 2019 원예과학기술지 Vol.37 No.2
The Korean production of highly valuable horticultural crops is less than 50% of the production inThe Netherlands. The production in Korea can be improved by yield gap analyses between a Dutchand a Korean grower. Fruit set, number of fruits, production of sweet pepper, and climate data of aDutch commercial grower were measured and compared with a Korean commercial grower. Greenhouse type and cultivar were same in both countries. The Korean grower produced faster andmore fruits after planting. However, with the increase in daily radiation later in the growing season,the Dutch grower harvested more sweet peppers per week, which results in a higher final production. Consequently, the difference in yield between growers was 10 kg·m-2. Low radiation along withlarge leaves and the relatively higher number of fruits for the young plants resulted in a lowsource-to-sink ratio (SSR), which causes abortion of reproductive organs. The fruit load variedbetween the two countries; however, it does not explain the factors limiting the yield. SSR canpredict the onset of fruiting, and an SSR above 0.5 suggested fruit onset. An SSR below thisthreshold value indicates light limitations. The SSR limits the fruit set, possibly due to high fruitloads and high vegetative sink strength. In the last part of the growing season, other factors couldhave played a role in the lower fruit set, since the SSR was mainly above 1. To improve yield, theKorean grower needs to know how to manipulate the vegetative and generative plant balance basedon weather conditions, irrigation management, and plant growth and developmental rate.
Lipid Profiles and Hepatitis C Viral Markers in HCV-Infected Thalassemic Patients
( Seyed Moayed Alavian ),( Seyyed Mohammad Miri ),( Seyed Vahid Tabatabaei ),( Maryam Keshvari ),( Bita Behnava ),( Pegah Karimi Elizee ),( Nastaran Mahboobi ),( Kamran Bagheri Lankarani ) 대한소화기기능성질환·운동학회 2011 Gut and Liver Vol.5 No.3
Background/Aims: The distribution of blood lipids, glucose and their determinants in thalassemic patients with chronic hepatitis C virus (HCV) infection has rarely been investigated. Thus, we aimed to investigate the relationship between both liver histologic findings and viral markers and serum lipids in thalassemic patients chronically infected with HCV. Methods: We enrolled 280 polytransfused thalassemic patients with chronic hepatitis C. HCV viral load was determined using the Amplicor test. Genotyping was performed using genotype specific primers. Fasting serum lipid, glucose, ferritin and liver function enzyme concentrations were measured. A modified Knodell scoring system was used to stage liver fibrosis and to grade necroinflammatory activity. Perls` staining was used to assess hepatic siderosis. Results: Just one subject had total cholesterol >200 mg/dL, and 7% had triglycerides >150 mg/dL. The mean high-density lipoprotein cholesterol (HDL-C) and glucose levels were 37 and 104 (97-111) mg/dL, respectively. Viral markers, liver histological findings and aminotransferase activity were not associated with serum lipid levels. Serum triglycerides, total cholesterol and ferritin were independent risk factors for impaired glucose tolerance or diabetes in these patients. Conclusions: The majority of the patients had blood lipid levels (with the exception of HDL) within the defined normal range; viral and liver histological factors do not appear to play a significant role in changing the levels of serum lipids or glucose in these patients. (Gut Liver 2011;5:348-355)