• Korean Journal of Breeding Science
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• v.40 no.4
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• pp.525-528
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• 2008

A new graft cactus (Copiapoa scopa) cultivar 'Redstone' was developed at Cactus Research Institute, Gyeonggi-do A.R.E.S, in 2007. GCP563 and GCP618 were crossed in 2004 and we got 9 seedlings from this combination. After pedigree selection in 2005, one cultivar was finally selected through the test of specific character in 2007 and named as "Redstone". "Redstone" cultivar has red brown color and round globose shape with 15 ribs and its spines are black. This cultivar is able to produce 26.8 offshoots per plant. 'Redstone' cultivar has higher productivity and more slow growth than Copiapoa scopa cultivar.

• Korean Journal of Breeding Science
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• v.40 no.4
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• pp.521-524
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• 2008

A new graft cactus (Chamaecereus silvestrii f. variegata) cultivars "Yellow Ttree" was developed at Cactus Research Institute, Gyeonggi-do A.R.E.S. in 2007. GC013001 and GC0110703 were crossed in 2005 and we got 42 seedlings from this combination. After pedigree selection in 2005, one cultivar were finally selected through the test of specific character in 2007 and named as "Yellow Ttree". "Yellow Ttree" has cylindrical shape of yellow color with 13~14 ribs. Formation of its offshoots is concentrated on the lower part of the plant. This cultivar is able to produce 13.9 offsets shoots per plant and its offshoots are hard.

• Journal of Bio-Environment Control
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• v.30 no.3
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• pp.196-205
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• 2021

This research was conducted in order to analyze the difference in yield through the changes in growth and measuring the photosynthesis efficiency in cherry tomatoes. Seedlings of cherry tomato 'Nonari' were used as scion and non-grafted control, while 4 different grafted tomatoes 'Powerguard', 'T1', 'L1', and 'B.blocking' were used as rootstocks. Plants grafted onto 'B.blocking' produced the highest fruit yield (417.5 g plant^-1), whereas non-grafted plant 'Nonari' had the lowest fruit yield, (354.2 g plant^-1) at the latter period of cherry tomatoes in May. The flowering position in May, plant grafted onto 'B.blocking', showed 14-17 cm, whereas non-grafted plant 'Nonari' showed 10-14 cm. The growth strength on May 15, non-grafted plant 'Nonari', showed 8.43 mm which was the lowest value among the treatments. Grafted plants kept the growth balance until the end of the harvest that led to an increase in fruit yield, while non-grafted plant weakened the vigor earlier that led to a decrease in fruit yield. Grafted plants showed higher values of chlorophyll fluorescence variables than the values of non-grafted plant. These results indicate that grafting influenced fruit yield which was observed as maintaining growth balance for longer and an increase in photosynthesis efficiency compared to non-grafting.

• Journal of Agricultural Extension & Community Development
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• v.12 no.1
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• pp.109-118
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• 2005

This study was carried out to identify the major characteristics of plug seedling farm's management. Thirty glasshouse farms were surveyed out of 42 farms that adopted plug seedling production technology in Korea. The major objectives of this survey were to determine the technical capability of the glasshouse farmers, and to analyze the significant differences in terms of production performance and management capabilities. The major results of the survey were as follows : 1) The production quantity of plug seedlings of the superior group was 43% higher than the inferior group. 2) The plug seedling loss rate of the superior roup was lower by 4% than the inferior group. 3) The income of superior group was 4.2 million Won per $1,000m^2$, while the income of the inferior group was only 0.45 million Won. 4) The cause of low production of grafted plug seedlings was primarily due to the lack of technical knowledge and skills. 5) The results indicated that the technical knowledge level and production skills of grafting plug seedling should be improved.

• Journal of Korean Society of Forest Science
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• v.109 no.2
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• pp.243-247
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• 2020

This study investigates bench grafting (BG) and field grafting (FG) in walnut by comparing the graft take rate, grade ratio, and simple earning rate using a conventional method. The mean grafting-take rate of the BG was 30.3% while that of FG was 77.1%. The quality of grafted seedlings is classified as good, fair, and poor. The quality grade ratio of FG seedlings is 3:4:3 (good:fair:poor) while the grade ratio of BG seedlings is 2:3:5. Field grafting resulted in 20% more good and fair seedlings than the BG method. As a result of calculating the earning rate with the sales income versus the input cost, FG has 1.5 times higher earning rate than BG. In summary, FG could be an alternative to conventional epicotyl grafting because it produced high-quality seedlings and increased productivity due to its high graft-take rate and earning rate.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.02a
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• pp.198-203
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• 2002

활착이 이루어지는 동안 접목묘 결합 부위의 식물체 온도 변화에 미치는 광질효과를 구명 하고자 열화상측정 시스템을 사용하였다. 접목묘의 활착기간 동안 접목 부위의 온도는 줄기 부위에 비해서 낮게 나타났으며, 활착이 이루어지면서 접목부위와 줄기부위의 온도차가 감소하였다. 접목묘의 식물체 온도는 백색광, 청색광, 적색광 및 혼합광의 모든 처리에서 광질과 무관하게 명기에 내려가고 암기에 올라가는 현상이 반복적으로 나타났다. 일반적으로 광합성이 이루어지는 명기에 엽온과 같은 식물체 온도가 높게 나타나는 것과 비교할 때 상기의 결과는 정반대에 해당하는 바 이부분에 대한 상세한 검토가 필요할 것으로 판단된다.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.02a
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• pp.204-209
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• 2002

본 실험은 주택용, 일반용, 교육용, 산업용, 농사용, 심야전력 등 국내의 종별요금체계에 따라 인공광을 이용한 접목묘 활착촉진장치에서 소비된 전기에너지와 전력요금을 비교하고자 수행되었다. 그 결과 전력요금은 일반용>교육용>산업용>심야전력>농사용의 순서로 나타났으며 접목묘 1주를 활착시키는 데 필요한 전기요금은 농사용의 경우 9.24원이었으며, 일반용 전력요금과 비교할 때 봄과 가을, 겨울, 여름철의 1주당 생산단가는 각각 2.3배, 2.4배, 3.4배로 나타났다. 또한 본 실험에서 소비된 전력은 컴프레서, 가열기, 조명, 가습기, 송풍기의 순서로 각각 28%, 57%, 11%, 3%, 1%로 나타났다. 활착촉진장치에서 소비된 전력 가운데 공조 시스템, 즉 냉·난방이 차지하는 비중이 전체의 85%로서 매우 높게 나타난 바, 공조 시스템에 대한 전력소모량의 절감 방안이 우선적으로 강구되어야 할 것으로 판단된다.

• Research in Plant Disease
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• v.23 no.3
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• pp.228-233
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• 2017

Six commercial rootstock varieties were tested for resistance to bacterial wilt (Ralstonia solanacearum) by dipping the roots of seedlings in the bacterial suspension at seedling stage. 'Shincheonggang' and 'B-Blocking' ranked top and second in resistance to bacterial wilt, respectively. For disease index of the grafted plants, 'Dotaerang' grafted onto 'Shincheonggang' was the least, followed by 'Ultra', 'Fighting', 'B-Blocking', 'Special', and 'Connection' grafts. Thus, disease development on the grafted plants was correlated with resistance of rootstocks. The effect of rootstocks on horticultural characteristics including days to flower of scion was minimum or negligible. In correlation between horticultural characteristics of rootstocks and scions grafted thereon, statistically significant negative correlation was observed in days to flower and fruit height but no significant correlation was observed in yield per plant, fruit diameter and soluble solid content in the fruits. Thus, selection of resistant rootstock varieties that support the growth and yield of scion well is necessary for effective control of the disease and yield increase.

• Journal of Bio-Environment Control
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• v.19 no.4
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• pp.317-323
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• 2010

This study aimed to examine a suppression effect of salinity on extension rate of stem elongation of cucumber seedlings (Cucumis sativus L.) grafted with roots of figleaf gourd plant. The effects of application methods, timings, and concentrations of two salt types, sodium chloride (NaCl) and calcium chloride ($CaCl_2$), were compared to untreated control plants. In result, an obvious suppression effect on the excessive elongation of stem was obtained by both sub-irrigated and medium-mixed NaCl salt. An improvement in quality of transplants was also obtained by the sub-irrigated NaCl salt. Foliar-applied NaCl caused visible leaf injury when the concentration was higher than 40 mM; but, with no effect on suppressing the stem elongation. When the NaCl was applied at 7 days after grafting, a higher concentration of NaCl was demanded for suppressing the stem elongation compared to an application at the day of grafting. No effect of the NaCl salt on the fresh weights of 36-day grown plants was observed; but, there was a negative effect on the number of female flowers at a high temperature season. Overall, the NaCl salt was more effective on slowing down the stem elongation and had the lower incidence of leaf injury than the $CaCl_2$ salt.

• Journal of Korean Society of Forest Science
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• v.55 no.1
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• pp.68-75
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• 1982

This study was carried out to promote percent survival of the walnut seedling grafting. The hardwood scions of the walnut were grafted on the nures seed-stock of the Juglans mandshurica Mat in an electric heating bed, then planted in field. The results obtained from the study were as follows : The optimum time of scion cpllection was from January to February. The best medium of the seed bed was sandy soil. The best grafting time was form the early to the 20the of the march. When the grafted seedling in the heating bed was trans-planted on filed 90percent of the seedlings was survived until autmn. The percent grafting on the elective heating bed was 90%. Crown gall occuring frequently in chestnut nurse graft was not appeared in juglans mandshurica Max grafted seedling of after outplanting. The grafted seedlings have not shown any physiological defects but developed normaly 3 years since grafting.