Background : Boxthorn has been cultivated by conventional fertilization and irrigation methods that can be characterized by applying a great deal of fertilizers and a small amount of water compared to the other crops. With increasing rain shelter greenhouses, there were significant needs for developing new fertigation and irrigation methods. In this study, several prescribed fertigation methods for balanced fertilizer application and a few irrigation start methods based on soil moisture tension has been tested to confirm the fruit quality and productivity for Boxthorn growers. Methods and Results : In the experiment, ‘Cheong-un’ cultivar was grown in the rain shelter greenhouses for the tests. Plots were set by randomized block design. According to the growth investigation on the ‘Cheong-un’ cultivar which is supplied with four different formulated fertigation, the formulation N 15 me/ℓ increased the size and weight of fruit leading to 17% increased yield than the others. Additionally, on the amount of annual supply of fertigation with the concentration of N 15 me/ℓ, the treatment applied with 10kg/10a during the cultivation period facilitated overall growth of ‘Cheong-un’ cultivar and increased the yield as well. In the irrigation experiment ‘Cheong-un’ cultivar was grown in the four differently planned treatments that start irrigation at –20, -40, -50 and -100kPa soil moisture tensions. According to the investigation, the irrigation treatment starting at -50kPa enhanced the number of fruit bearing and productivity of Boxthorn consistently during two years. Conclusion : Therefore, the newly developed fertigation and irrigation methods could enhance the annual income of Boxthorn growers by increasing growth and yield.

Background : Chinese matrimony vine (Lycium chinense Mill.) is a deciduous shrub belonging to the Solanaceae. The leaves are used as an alternative raw material replacing dried fruits associated with high production costs in many industires. The aim of this experiment was to determine the effect of drying temperature on the leaves used in the manufacture of functional products. Methods and Results : The leaves of Chinese matrimony vine were harvested when the plant height reached 60 - 70 ㎝ in the spring and treated at four different temperatures (40℃, 50℃, 60℃ and 70℃). The time to reach the desiccation state of 20% was 63 h at 40℃, 37 h at 50℃, 17 h at 60℃ and 11 h at 70℃. The drying rate per hour was 1.28% at 40℃, 2.25% at 50℃, 4.94% at 60℃ and 7.60% at 70℃. No significant difference were observed in ash, crude fat, polyphenol or rutin content of treated samples. Crude protein and betaine content decreased with higher dry temperatures. Nitrogen free extract of the treated samples increased with higher drying temperatures. Conclusions : Taking into consideration drying time, drying rate, color value, energy consumption and functional ingredients is advantageous to dry the leaves of the Chinese matrimony vine at 60℃ using a hot air agricultural dryer.

내병충, 다수성 계통인 CB02214-131 (IT232701)을 모본으로 하고, 청양 7호(IT232601)를 부본으로 인공교배를 실시하여 CB04340-64를 선발하고, 생산력검정 시험 결과 병충해에 강하며 다수성으로 인정되어 ‘청양 14호’로 계통명을 부여하였다. 구기자 우량계통 ‘청양 14호’는 청양, 예산, 진도 등 3지역에서 2009∼2011년 3개년간 지역적응성을 검증한 결과 생육이 양호하고 병해충에 강하며 약용성분이 많을 뿐만 아니라 수량성이 우수하여 ‘청광’으로 2012년에 품종보호출원하였고, 국립종자원에 품종보호등록(품종보호 제 4794호, 2014.02.10∼2034.02.09) 되었다. 주요특성을 요약하면 잎은 둥근 피침형이고 다소 작으며, 열매는 장타원형이고 중간크기이었다. 개화기는 6월 26일로서 중생종이였다. ‘청광’은 대비품종에 비하여 2회의 적심에 의하여 분지 발생이 많았다. 혹응애와 탄저병 저항성은 중강으로 대비품종과 비슷하였다. 지표성분인 베타인 함량은 0.75%, 당도는 15.3°Brix로 대비품종에 비하여 다소 높았다. 건과수량은 대비품종에 비하여 생산력 검정시험에서 15%, 지역적응시험에서 6% 증수되었다. 이 품종은 자가불화합성이 있으므로 수분수 품종으로 ‘청명’과 같이 혼식하여 재배하여야 한다.

The objective of this study was to establish the optical storage condition in cutting slips of Lycium chinense Mill. We investigated the different influential growth factor of this plant including two soil types (soil and vermiculite) and storage methods (gauze, parafilm, vinyl, and paper). Our result revealed that the formation of axillary bud was highest (4.8 ± 0.75 ea) from the cutting slips stored in vinyl and vermiculite treatment. Root length was long (2.8 ± 0.13 ea) in parafilm storage using soil. Maximum plant height was 135.33 ± 12.81㎝ with gauze storage using vermiculite. The number of leaves was maximum (130 ± 2.5 ea) at 90 days from the cutting slips of gauze storage using vermiculite. Highest number of fruit was harvested (149 ± 16.05 ea) from the cutting slips stored in parafilm and grown in vermiculite. It can be concluded that the storage treatment and soil type influence the affecting to general growth of Lycium chinense Mill.

2007년에 내병성이면서 장타원형인 청명(IT232706)과 다수성인 CB04341-286로 인공교배를 실시하였고, CB07423-104 개체를 선발하여 2011년 “청양 17호”로 계통명을 부여하였다. 청양, 예산, 진도 등 3지역에서 2011～2013년까지 3년간 지역적응성을 검정한 후 개화기가 빠르면서, 키가 작고, 내병충성, 지표성분 고함유, 다수성으로 인정되어 우수성을 인정받아 2014년도 “청홍(靑紅, Cheonghong)으로 명명하였다. 구기자 신품종 “청홍”의 주요 특성은 다음과 같다. 잎은 피침형으로 녹색이고 대비품종인「청명」에 비하여 가늘다. 개화기는 대비품종에 비하여 약 11일 빨랐고, 수형은 개장형으로 키가 작고 적심에 의한 분지발생이 적은 편이다. 열매는 황적색이면서 장타원형이고 100과중이 약 19g로서 중간크기이다. 병해충 저항성은 무방제 상태인 노지포장에서 자연 발생 정도를 조사하였는데, 탄저병 이병과율과 혹응애 발생률은 대비품종인 「청명」과 비슷하여 저항성이 강하였다. 주요 지표성분으로 베타인 함량 0.85%, 당도 15.4°Brix로서 대비품종에 비하여 높았고, 건과수량은 대비품종에 비하여 생산력 검정시험에서 22%, 지역적응시험에서 16% 증수되었다. 주요 용도는 약용과 식용으로 모두 이용이 가능하였다. 신품종 「청홍」의 수분수는 열매크기가 비슷하고 두 품종의 혼식시 결실률이 높은「청명」품종이 가장 적합하였다. 또한 건조 후 외관 품질 향상을 위하여 적기에 수확하고, 건조온도를 준수할 필요가 있다.

This study was carried out to investigate the effect of sucrose, boric acid, and calcium nitrate in optimum pH and relative humidity on pollen germination and pollen tube growth of boxthorn (Lycium chinense M.). Medium containing 100mg/L of H3BO3 showed maximum pollen germination and pollen tube elongation, 64.8% and 920μm. Additionally supplied calcium nitrate to the medium lowered pollen germination rate and pollen tube elongation. Here we report the optimum conditions for the pollen germination and pollen tube development was observed at 10% sucrose, 1.0% agar, pH 6.0, and 100% relative humidity.