‘Taegang’ is a new six-rowed covered barley cultivar developed by the National Institute of Crop Science (NICS), R.D.A. This cultivar is developed from a cross between ‘Suwon287’ and ‘Olbori’ in 1992. An F8 selection was made at NCES in 2000 and it was te

A new sprout-soybean cultivar, “Wonhwang” was developed at the Honam Agricultural Research Institute (HARI) in 2005. Wonhwang was selected from a cross between Camp and Myeongjunamulkong. The preliminary, advanced, and regional yield trials for evaluation and selection of Iksan45 were carried out from 2001 to 2005. This cultivar has a determinate growth habit with purple flower, grayish brown pubescence, grayish brow hilum, lanceolate leaflet shape and small seed size (10.0 grams per 100 seeds). The maturity date of Wonhwang is 7 days earlier than that of the check variety, Pungsan. It has good seed quality for soybean-sprout, and resistance to lodging. It has also been identified to have resistance to soybean mosaic virus (SMV) and necrotic symptom(SMV-N). The average yield of “Wonhwang” was 2.80MT/ha, which was higher by 4% than “Pungsannamulkong” at the regional yield trials.

In this study, the PHYTO-PAM-fluorometric method was used to evaluate the ETRmax in terms of sensitivity to DIN/DIP against 14 microalgae: Prorocentrum micans, Heterocapsa triquetra, Gymnodinium impudicum, Gymnodinium catenatum, Amphidinium caterae, Chlorella vulgaris, Chroococcus minutus, Microcystis aeruginosa, Chlorella ellipsoidea, Nannochloris oculata, Oocystis lacustris, Chroomonas salina, Gloeocystis gigas, and Prymnessium parvum. We found that P. micans, H. triquetra, and A. caterae exposed to the maximum level of DIN/DIP were significantly smaller in the ETRmax than that of the minimum and moderate mixture. Unlikely the ETRmax, the initial slope alpha was not significantly different at the level of 60 DIN/DIP. In G. catenatum, the moderate levels of 15 and 20 in DIN/DIP were found to be significantly different from the ETRmax at Ch1-Ch4. Gymnodinium impudicum had a higher value than that of the ETRmax than that of dinoflagellates used in this study, ranging from 306.1 (Ch4, DIN/DIP: 10) to 520.1 (Ch4, DIN/DIP: 30). The ETRmax value obtained from other microalgae was similar to G. impudicum at any of the ratios of DIN/DIP and channels. Consequently, the influence of offshore water current assures us of the suppression of photosynthesis and electron transport rate in dinoflagellates. Gymnodinium impudicum has not been researched in the area of red tides in Korea, but it will be enough to creat the massive algal blooms in the future because of higher potential photochemical availability.

A new oat (Avena sativa L.) cultivar 'Darkhorse' was developed by Honam Agricultural Research Institute (HARI) m2005. It was released because ofits earlmess, high forage yield potential and adaptability for late summer sowing. It was devel-oped from the a

A new oat (Avena sativa L.) cultivar, "Highspeed" was developed by Honam Agricultural Research Institute (HARI) in2005. It was released because of its earliness, high forage yield potential, and good adaptability for late summer sowing. "High-speed" was s

Chinese milk vetch (AstragaIus sinicus L.) is a biennial leguminous plant. Although this species is becoming a commongreen manure croP, Chinese milk vetch seed has a low germination rate due to low water permeability of the seed coat which islimiting fact

Airborne particles collected from a heavily industrialized site were analyzed by chemical speciation of seven trace metals: Pb, Cd, Cr, Cu, Ni, Zn, and As. The average concentrations were as follows: Zn, 502.0 ± 230.7; Pb, 176.5 ± 310.9; Cu, 111.9 ± 82.7; As, 38.0 ± 31.0; Cr, 21.5 ± 24.4; Cd, 20.8 ± 17.4; and Ni, 11.4 ± 8.4 ng/m3. The median enrichment factor (EF) values of Cd (7,280), As (1,030), Cu (215), Zn (214), and Pb (143), with respect to iron, were much larger than 100. We observed that Cd was found in the soluble and exchangeable form (56.9%), and that Pb and Cr were found in carbonates, oxides and the reducible form (69.8% and 61.1%, respectively). These two forms, which are the most easily absorbed into human body tissue, predominated in most of the trace metals investigated in this study.

A stable, efficient, and reliable selection system using bar and hpt as selectable markers for Agrobacterium mediatedco-transformation of rice with two separate vectors was developed. Two plasmids, pMJC-GB-IFS2 and pMJC-GH-CHR carryingbar or hpt gene as s

A new vegetable peanut variety “Bakjung(Arachis hypogaea L.)” was developed from the cross between Shindaekwang and Suwon94 at the Honam Agricultural Research Institute and Yongnam Agricultural Research Institute, National Institute of Crop Science in 200

A new peanut variety “Kokwang(Arachis hypogaea L.)” was developed from the cross between Florigiant and Tifapan at the Honam Agricultural Research Institute in 2003. This variety has shinpung type and erect growth habit with midium size obovate dark green

A new soy sauce and soy paste soybean cultivar, “Hojang” was developed from the cross between HS12 (Jangyeobkong/Hwangkeumkong) and Suwon153 by the soybean breeding laboratory of the National Honam Agricultural Experiment Station (NHAES) in 2002. The prel

A new sprout-soybean variety, “Dagi” was developed from the cross between Namhaekong and D70-6545 by the soybean breeding laboratory of the National Honam Agricultural Experiment Station (NHAES) in 2002. The preliminary, advanced, and regional yield trial

A new soybean variety, “Sunam” was developed from the cross between Kosuzu and Bukwangkong by soybean breeding laboratory of the National Honam Agricultural Experiment Station (NHAES) in 2002. The preliminary, advanced, and regional yield trials for evalu

Activity of senescence-induced antioxidant enzymes in the detached rice seedlings (Oryza sativa L. cv. Dongjin) was examined. The levels of ~textrmH2~textrmO2 content and peroxidase (POD) activity were gradually increased during leaf senescence, whereas catalase activity was decreased. The activity of superoxide dismutase (SOD) was increased, and ascorbate peroxidase (APX) and glutathione reductase (GR) were slightly increased until 3d and 4d of dark induced-senescence, and thereafter were decreased. The activation of all SOD isoforms showed a significant decrease after 6d and 7d. After 4d to 7d of dark senescence, there was a significant effect in enhancing the activity of APX-12 and -13 isoforms as compared with light, despite similar levels in total APX activity. GR-8 and -10 isoforms were more effective in leaf senescence at 4d to 7d, particularly with respect to dark-induced senescence. These results suggest that the metabolism of active oxygen species such as ~textrmH2~textrmO2 is dependent on various functionally interrelated antioxidant enzymes such as catalase, peroxidase, SOD, APX and GR.

This study was conducted to determine the efficient regeneration condition for perilla (Perilla frutescens cv. Yeupcildllggae). Leaf, cotyledon and hypocotyl explants were excised from perilla plants 10-12 days after germination and subjected to regenerat