Auricularia polytricha has strong decomposition ability on wood fiber and a wide range of temperature adaptation as mid-high temperature mushroom. In addition, Auricularia polytricha does not require light in the mycelial growth period, but it is cultivated in the field because the light promotes the differentiation of fruiting bodies and affects the pigment formation. This study was conducted to investigate the possibility of the cultivation of Auricularia polytricha (Mont.) Sacc. "Geoni" which was bred at Jeonnam Agricultural Research Institute in 2012 at a simple-typed PE film mushroom house, and to compare the quality characteristics of the Auricularia polytricha (Mont.) Sacc. "Geoni" cultivated at air-conditioned mushroom house. Auricularia polytricha (Mont.) Sacc. "Geoni" was cultivated with sawdust-based media (0.9 kg) every 3 days from June 15 to July 13 at air-conditioned mushroom house and PE film mushroom house, and harvested until July 26th. The temperature and the humidity of the air-conditioned mushroom house was maintained at 23°C and 90-9 %. The Irrigation was conducted 1 time per day and 2 to 3 times per day at air-conditioned mushroom house and PE film mushroom house respectively. The harvesting period were the same for each treatment. The fruiting body was 6.0 ㎝ and 5.1 ㎝ in major axis and 4.6 ㎝ and 4.0 ㎝ in minor axis at PE film mushroom house and air-conditioned mushroom house respectively, as a result the size of the fruiting body grown at PE film mushroom house tended to be larger. The thickness of fruiting body was 0.85㎜ and 1.24㎜ at PE film mushroom house and air-conditioned mushroom house respectively. These results are considered to be due to the difference in the humidity control conditions between each treatment. The number of fruiting bodies per bag was 4.3 at PE film mushroom house and more tendency than 3.7 at air-conditioned mushroom house. The springiness of the fruiting body was 1.23 ± 0.21 and 1.01 ± 0.17. the chewiness was 620 ± 89 and 507 ± 128, and the resilience was 0.49 ± 0.03 and 0.35 ± 0.07 at PE film mushroom house and air-conditioned mushroom house respectively. As a whole, it was judged that the physical properties of the fruiting body grown at PE film mushroom house were excellent. Also, when comparing the chromaticity of fruiting body, L(lightness)-a(red color)-b(yellow color) value was 30-5.5-3.9 and 39-6.5-7.5 at PE film mushroom house and air-conditioned mushroom house respectively. The yields did not show differentiated tendency by cultivation time. However, the weight of fruiting body per bag was 308g and 252g at PE film mushroom house and air-conditioned mushroom house respectively. Therefore, according to these result, Auricularia polytricha (Mont.) Sacc. "Geoni" was judged to be a suitable cultivar at PE film mushroom house for summer.

A. auricular-judae cultivars, ‘Yong-a’ was cultivated in JARES on 2015. Ear mushroom have been consumed the form of dried mushrooms imported from china, but the production and consumption of domestic ear mushroom have been increasing recently. However, how the different drying methods affect the quality of domestic varieties is not clear. Therefore, we examined the effects of drying methods to improve the competitiveness of dried ear mushrooms using domestic cultivar, ‘Yong-a’. Ear mushroom samples were dried using sun-drying and hot air drying(50, 60°C) and combined of two methods(hot air drying at 50, 60°C after 3,6 and 9 hours sun drying) and drying time, rehydration ratio, color and hardness, vitamin D2 contents were evaluated. Drying time was the fastest at 60°C hot air drying(11.5h) and the slowest at 50°C hot air drying(16h) and drying time was shorter as the sun drying time was longer. The rehydration ratio was the highest at 60°C hot air drying(18.6%) and increased as the drying time decreased. After drying and rehydration, the color showed no significant difference between drying methods. The hardness of rehydrated mushroom was highest at sun drying and 60°C hot air drying. The contents of ergosterol were not significantly different by drying methods. However, vitamin D2 was lowest at 50 °C and 60°C hot air drying (4.22mg%, 3.87mg%) and highest at sun drying and 50°C hot air drying after 6 hours sun drying (12.52mg%, 12.99mg%). vitamin D2 contents was higher at 50°C hot air drying than 60°C. According to the results of color, hardness, vitamin D2 contents of dried ear mushroom, sun drying is the best method. When the sun drying is not possible, hot air drying at 60°C is suitable, but it is better to use sun drying method to increase the vitamin D2 contents.

Geoni, a new variety of Auricularia polytricha, was bred in JARES(Jeollanamdo Agricultural Research and Extension Services) in 2012. Geoni was selected through the monospore hybridization with JNM21008 and JNM21014 in 2010. Based on a performance test conducted from 2011 to 2012, the Geoni was selected from a line showing an excellent light brown pileus and strong pest resistance. Geoni has a favorable chewiness, light brown and smooth pileus. In addition, Geoni was rich in dietary fiber. MCM(mushroom complete medium), Malt and PDA(Potato Dextrose Agar) mediums were suitable for cultivating the Geoni. The number of effective stipes was 39 ea/0.9 kg and minor axis and major axis of pileus were 6.9 cm and 8.7 cm respectively. The yield of Geoni was 291 g/0.9 kg in plastic bag. Geoni was required 40~54 days for culture at 20oC and 24days for the primordia and growth period, which is longer than that of the control(Pung-un). Somatic incompatibility was formed between parental strains and Geoni. Analysis of the genetic diversity of the new variety "Geoni”revealed a different profile from the parental strains when RAPD(random Amplified Polymorphic DNA) primers were used.

This study was performed to investigate the adequate standard pot and number of plants per tree of raising seeding pot on the foxtail millet transplanting culture in the southern province. Due to the various application of wellbeinghealth food recently, for upbringing of the foxtail millet, millet and sorghum in minor cereals, R & D and policy support is being promoted actively. The foxtail millet growing season is so short from 90 to 130 days, and it is large variations for a growth temperature. The main results are as follows. When it comes to foxtail millet transplantation, seedling quality of 406 holes, 200 holes and 162 holes of raising seeding pot type were not all significant, and field rooting percentage is accounted for all 94 to 95%. Yield of a foxtail millet was exposed in 406holes 305 kg/10a>162holes 303 kg> 200holes 302 kg order, and it was no significance between test processing. When it's the raising seeding transplanting culture, in case of pot culture, 406holes pot culture were reduced the bed soil cost 63%, pot 50%, working hours 18% for 200holes pot. Transplanting seedling quality per a foxtail millet transplanting culture method, dry weight was high inclination as transplanting number of plant is less, and field rooting percentage displayed more than all 95%. Yield appeared to 2 plants seedling transplanting 315kg/10a> 3 plants seedling transplanting 304kg>1 plant seedling transplanting 256kg order. The projected cost per the pot-sort on the raising seeding transplanting culture of foxtail millet, the seedling transplanting culture of 406holes was reduced 40% percentages compared to 200holes as 76,230won/10a. As a result, 406holes pot and 2plants seedling transplanting culture, labor-saving culture was possible.

“고강”은 고품질･내병･다수성 지황 개발을 목표로 지황1호 실생 집단에서 우량 개체를 선발, 증식을 거친 후 2001～’02년 생산력 검정시험을 실시하였다. 그 결과 고품질이면서 병해에 강하고수량성이높아수원7호로계통명을부여한후, 2003～’05년까지 3년간 지역적응시험을 실시한 결과 우수성이 인정되어 2005년 12월 직무육성 품종 심의회를 거쳐 “고강”으로 명명하였는바 그 주요특성을 요약하면 다음과 같다. 1. 고강의 초형은 지면에서 약간 솟아오르는 형태를 나타내며, 생육중기 완전 전개된 잎중 가장 어린잎들의 색깔은 안토시아닌 색소를 거의 띠지 않아 대비품종과 구별된다. 2. 고강은 지황1호에 비하여 잎이 크고 많으며, 뿌리가 굵고 길다. 3. 고강은 병에 대한 저항성도 비교적 강하여 생산의 안정성이 높은 품종이다. 4. 고강은 2003～’05년까지 3년간 실시한 지역적응시험결과 수원 등 3지역에서 모두 증수되는 것으로 나타났고, 3지역의 10a당 평균 수량은 1,186kg로 지황1호 대비 13% 증수하였다. 5. 고강은 지황의 주요성분인 catalpol과 엑스함량이 지황1호에 비하여 많은 고품질 품종이다.