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Lee Y.-S.,Jeollanamdo Agricultural Research and Extension Services | Seo H.-Y.,World Institute of Kimchi | Kim G.-D.,Chonnam National University | Moon J.-H.,Chonnam National University | And 5 more authors.
Korean Journal of Food Science and Technology | Year: 2010

This study was performed to compare the quality and volatile components of two cucumber (Cucumis sativus L.) cultivars (Cheongnakhab, Ipchunakhab)-grown under organic and conventional conditions. The levels of pH and soluble solids in the organic system were similar to those in the conventional system. The hardness of the pulp in the organic cucumbers was slightly higher than that in conventional cucumber regardless of cultivar. However, the contents of chlorophyll a, b, and total chlorophyll in organic cucumbers were significantly (p>0.05) higher than those in conventional cucumber. The major volatile compound of fresh cucumber was (E,Z)-2,6-nonadienal regardless of cultivar and farming system. When classified by the identified components′ functional group, the rate of aldehydes was the highest of all samples. The results indicate that the quality and volatile components in organic cucumbers were similar to those in conventional cucumbers except for hardness and chlorophyll contents regardless of cultivar. © The Korean Society of Food Science and Technology.

Lee J.-Y.,Chonnam National University | Kim Y.C.,Chonnam National University | Han T.-H.,Chonnam National University | Kim S.-T.,National Horticultural Research Institute | Gi G.-Y.,Jeollanamdo Agricultural Research and Extension Services
Acta Horticulturae | Year: 2010

Rose is one of the most important cut flowers all over the world as well as in Korea. Growers in Korea are exclusively relying on foreign cultivars. A rose breeding programme was started a decade ago in Korea. Lack of knowledge lead to a number of research topics for Korean researchers. One of these topics is the low germination rate in rose seeds which is in general about 20%. High amounts of substances that inhibit germination were found in the pericarp of the achene. Four different treatments such as scarification (0, 1, 5, and 10 min), UV-irradiation (0, 5, 10, 20, and 30 min), immersion in surphuric acid (0, 5, and 10 min) and microorganism (Klebsiella oxytoca C1036 treatment for 0, 1, and 48 h), were applied to improve germination rate. Only microorganism treatments (1 and 48 h) were successful in improving germination rate by two times compared to the control. Presently several other microorganisms are being tested.

Seo J.B.,Jeollanamdo Agricultural Research and Extension Services | Shin G.H.,Jeollanamdo Agricultural Research and Extension Services | Jeong H.J.,Jeollanamdo Agricultural Research and Extension Services | Lee Y.S.,Jeollanamdo Agricultural Research and Extension Services | And 3 more authors.
Acta Horticulturae | Year: 2014

This study was conducted to examine the effect of foliar applications of a water-soluble complex fertilizer without nitrogen, on plant growth, budding and flowering of strawberry runner plants. The cultivar used was the junebearing 'Seolhyang'. After foliar spraying in one month intervals from the last ten days of July. There was a significant effect of treatments on the leaf number and dry weight. Yields at 40 days after transplanting were not affected by treatments. The budding ratio was 8.5 to 10.5% higher than the control at 35 days after transplanting, and the same trend was observed at 45 and 55 days after transplanting. The flowering ratio of the one or more leaf sprays group increased compared to the control. Therefore, it was found that during the strawberry nursery period (summer, high temperatures, long photoperiods), leaf sprays with a nutrient solution lacking nitrogen induced flower bud differentiation and increased budding ratio.

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