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이욱 ( Uk Lee ),김만조 ( Mahn Jo Kim ),이문호 ( Moon Ho Lee ),황명수 ( Myoung Soo Hwang ),황석인 ( Suk In Hwang ) 한국산림과학회 2005 한국산림과학회지 Vol.94 No.1
This study, basic research for releasing new chestnut cultivar, is conducted to consider quantitative nut characteristics according to combinations and individuals in 11 chestnut hybrids. Number of bur on bearing branch(NBB) and nut yield(NY), which showed large difference among combinations, was superior in JO (J000k×Otanba) and KO (Kwangeun×Otanba) combinations, respectively. Average nut weight (NW) was 21.1g, the highest in EO (Eunsan×Otanha) combination. Nut shape which was expressed to the rate of nut height and width, was investigated to the range of 1.13-1.23 in the all combinations, so nut shape of all combinations showed oval type. EO and JO combinations, which were measured to 30.0% and 27.5%, respectively in the percentage with the pericarp split(PPS), were produced more bad fruits than the others. OK (Otanba×Kwangeun) combination, 1.7%, was the most excellent in the percentage of polyembtyonic nuts(PPN), and the superior combinations which was measured to the below 5%, could be included five combinations. ER and RK combinations, were the highest values, 16.3% and 10.0 kg! ㎠, in soluble solids content(SSC) and kernel hardness (KH), respectively. NBB showed highly positive correlation with NY but showed highly negative correlation with SSC and NW. NW showed highly positive correlation with PPS, but showed highly negative correlation with SSC and NH. PPS showed highly positive correlation with PPN. Eight individuals such as superior individuals could be selected by selection criteria.
이은승,안영희,황명수 中央大學校 食糧資源硏究所 1997 食糧資源硏究所 論文集 Vol.4 No.-
Callus induced from cambium of chestnut (Castanea crenata) relatively showed high survival rate. About 40 cultivars of 1 or 2-year-old chestnut were selected and their cambium were cutted in vitro. Then the peeling cambium were cultured onto Murashige and Skoog(MS) medium containing 2,4-D to induce callus from Feb. to May in 1997. Callus Induced were subcultured at 6-7 times by the time their color became white. Then 'Ikaba'. ' Odanba' and 'Pyong-gi', which showed excellent growth status, were selected to compare various cryoprotactants and pretreatments. 3-week-old callus were precultured onto ½MS medium containing 5% sucrose at 25℃ for 24 hours. Precultured callus were treated with various cryoprotectants. Callus treated with cryoprotectants were transfered to 1.8㎖ plastic cryothubes containing a highly concentrated vitrification solution (PVS2) and preserved in -196℃ liquid nitrogen(LN) for 24 hours. After rapid warming in water, of which the temperature was 30℃, 35℃, and 40℃ respectively, the survival rate were examined by means of staning with fluorescein diacetate (FDA). In the present study, the most high survival rate at all the three cultivars was showed in the treatments with 5% DMSO + 0.5% glucose pretreating following postthaw at 35℃ water and the rate was about 50%.