초록 ▼

Ⅳ. 연구개발결과
제 1 세부연구과제 : 배 신육성 품종의 과피흑변 방지기술 개발
배 과피흑변과 발생은 주로 수확 후 저온저장 중 발생하는 것으로 알려져 있으나 ‘추황배’품종은 수상에서 착과된 상태에서도 발생하며, 수확시기 늦을수록 과피 흑변과의 발생율이 높았며, 기상요인과 수확시 과피흑변과의 관계요인을 분석한 결과 일교차가 커지는 시기와 최저 기온도 10℃이하인 일수가 많은 경우 과피흑변과 발생이 많았다. 수확시기의 차이와 저장용 상자의 포장 방법에 따른 과피흑변과 발생률에서 수확시기가 늦어질수록 과피흑변과 발생이 많았

Ⅳ. 연구개발결과
제 1 세부연구과제 : 배 신육성 품종의 과피흑변 방지기술 개발
배 과피흑변과 발생은 주로 수확 후 저온저장 중 발생하는 것으로 알려져 있으나 ‘추황배’품종은 수상에서 착과된 상태에서도 발생하며, 수확시기 늦을수록 과피 흑변과의 발생율이 높았며, 기상요인과 수확시 과피흑변과의 관계요인을 분석한 결과 일교차가 커지는 시기와 최저 기온도 10℃이하인 일수가 많은 경우 과피흑변과 발생이 많았다. 수확시기의 차이와 저장용 상자의 포장 방법에 따른 과피흑변과 발생률에서 수확시기가 늦어질수록 과피흑변과 발생이 많았으며, 수확용 상자포장 방법에 따른 차이에서 무처리가 P.E필름, 신문지 처리에 비하여 발생이 많았다. 봉지종류가 과피흑변과 발생에 미치는 영향을 조사한 결과 흡광도가 적은 봉지가 흡광도가 높은봉지에 비하여 발생률이 높았다.
제 2 세부연구과제 : 배 주요 신품종의 생리장해 경감기술 개발
배 ‘원황’의 재배 농가를 해발고도에 따라 재배지를 구분하였을 때 중간부(해발고도 100~300m)와 산간부(해발고도 300m 이상)가 해안부(해안인접지역으로 해발고도 100m 이하)와 평야부(해발고도 100m 이하)보다 개화시부터 만개기까지의 개화기간이 1~3일 정도 길고 빠른 것으로 나타났으며, 전자기후도로 표현했을 때 중산간부가 최저극기온이 낮기 때문에 해안평야부보다 개화기 저온 피해 조우 확률이 높아질 수 있다. 토양수분에 따른 배 ‘원황’, ‘만풍배’, ‘한아름’의 광합성량과 수액이동량은 적습 수준인 – 4kpa에서 – 3kpa과 – 7kpa 보다 높게 나타났으며, 광합성속도와 기공전도도는 정의 상관관계를 보였다. 배 ‘화산’ 품종의 부유과 발생율은 과중이 무거워질수록 증가하는 경향이었으며, 부유과는 정상과보다 비중이 낮은 것으로 조사되었다. 과실품질에서 부유과는 정상과보다 과실경도가 낮고 가용성 고형물 함량이 높게 나타나는 것을 보았을 때 부유과가 정상과보다 성숙 및 노화가 더욱 빠르게 진행된 것으로 보이며, 무기성분에서 통계적 유의성은 없었다. ‘만풍배’ 품종 역시 부유과는 정상과보다 비중이 낮아 물에 뜨는 성질을 가지고 있었고 경도와 가용성 고형물 함량이 높고 산도가 낮게 나타나 숙기가 지연된 것으로 보인다. 과실의 무기성분은 질소, 칼륨, 마그네슘에서는 통계적 유의성이 없었으나 칼슘 함량의 경우 부유과가 정상과보다 유의하게 낮은 것으로 나타났다. 엽면적지수에 따른 과중분포에서 배 ‘원황’ 품종은 평균과중과 수확량은 엽면적지수가 1.0~1.2일 때 수확량이 최대치를 나타냈으며, 평균과중의 경우 엽면적지수와 부의상관관계를 나타내었다. 또한 상품과인 430g 이상 과실은 엽면적지수와 부의 상관, 375g 이하 과실 비율은 정의 상관을 나타내었다. ‘화산’ 품종은 엽면적지수가 낮을수록 평균과중이 낮아지는 경향을 보였고 상품과와 엽면적지수와의 관계는 ‘원황’ 품종과 같은 결과를 나타내었다. ‘만풍배’ 품종에서 평균과중은 엽면적지수가 1.12보다 낮거나 높아지면 작아지는 2차방정식을 나타냈으며, 수확량은 엽면적지수가 높아질수록 많아지는 경향을 나타내었다
제 3 세부연구과제 : 수확 후 장기신선도 유지를 위한 숙기조절기술 연구
배 품종별 에틸렌의 발생 정도는 품종에 따라 매우 상이하며 수확 후 유통과정을 거치면서 유통온도에 따라 발생량이 다르게 나타나므로 본 연구에서 ‘한아름’의 경우, 성숙기간 중 소량이지만 에틸렌발생이 검출되었고 ‘만풍배’ 및 ‘신고’의 경우에는 검출되지 않아 ‘한아름’의 경우, 유통 중 신선도를 유지하기 위해서는 수확시기 결정 및 유통온도관리를 더욱 신중히 해야만할 것으로 판단되었다. 배 ‘한아름’, ‘만풍배’ 및 대조구인 ‘신고’에서 생리적 성숙기를 기준으로 7일 간격으로 7-8회 수확하여 과육의 세포벽함량을 조사하였다. 세 품종 모두 과실비대가 증가하고 성숙기에 근접할수록 알콜불용성물질(EIS)의 함량은 낮아지는 경향이었다. ‘한아름’의 경우, 생육일수가 127일로 짧아 과육의 EIS의 함량이 세 품종 중 가장 낮은 것으로 조사되었다. 즉, 성숙기의 EIS 함량은 10.79mg • g FW^-1로 ‘만풍배’의 12.72 및 ‘신고’의 12.75mg • gFW^-1에 비해 낮게 조사되었다.
제 4 세부연구과제 : 배 신품종 과실의 생육기별 세포조직 및 품질변화
만개기부터 수확기까지의 ‘만풍’ 배의 생육기별 과실구조를 관찰한 결과 만개기는 5월 3일이었으며, 만개기 유과의 과실 구조는 가장 바깥쪽으로부터 하나의 외표피층, 아표피층, 유조직층, 내표피층으로 구성되어 있었다. 내표피층 안쪽에는 하나의 심실에 두 개의 배주가 형성되어 있어 총 5개의 심실을 가지고 있었으며, 아표피층부터 유조직층까지 바깥쪽부터 주변 유관속(periphery vascular bundle)과 화판유관속(petal vascular bundle), 악편유관속(sepal vascular bundle)등의 유관속 조직들이 동그란 형태로 내재되어있었고 내표피층 쪽으로 타닌 세포들이 형성되어 있었다. 초기의 과실 비대는 만개기 부터 만개 후 63일 까지 아표피층에서 유관속조직까지의 세포 층수가 8~9층에서 17~18층으로 급격히 증가하고 유관속조직까지의 거리가 73.0~73.1㎛에서 141.2~141.3㎛까지 늘어나 이 시기에는 세포분열에 의한 과실비대가 관찰되었다. 과피세포가 과육세포에 반해 납작하고 얇은 형태로 신장하고 타닌세포들이 전반적으로 존재하여 과피와 과육의 구분이 가능하였다. ‘원황’ 배의 생육기별 해부학적 구조 관찰한 결과 만개기 유과는 가장 바깥쪽으로부터 한 층의 외표피와 아표피층, 유조직층, 한 층의 내표피층으로 구성되어 있으며, 내표피층 안쪽으로 5개의 심실이 형성되고 있는 것을 볼 수 있었다. 또한 아표피층과 유조직층 사이에 바깥쪽으로부터 주변유관속, 악편유관속, 화판유관속, 중앙심피유관속까지 총 4종류의 유관속 조직이 관찰되었다. 만개 후 30일에는 과피 직하에 몇 개의 석세포들이 모여 작은 석세포군을 형성하였으며, 만개 후 일수가 경과할수록 석세포군의 직경 및 세포수가 증가하였다. 만개 후 50일에는 석세포 주변부의 유세포가 방사상으로 배열되기 시작하였으며, 과실의 지속적인 비대로 인해 길게 늘어진 형태를 보였다. 석세포군의 형성은 만개후 80-90일 사이에 대부분 완료되었으며, 이후에는 석세포와 석세포군의 변화를 식별하기 어려웠다. 과점은 만개 후 40일부터 관찰되었고, 코르크층으로 추정되는 세포는 만개 후 50일에 과점 주변부에서 형성되기 시작하여 만개 후 60일에는 모든 처리구에서 관찰할 수 있었다. 코르크층은 무대 처리구에 비해 일반봉지 및 착색봉지 처리구에서 급격히 형성되었다. 반면에 수확 기에는 무대 처리구가 다른 두 처리구에 비해 코르크층의 세포 수가 많고 두꺼웠다. 수확기 과실의 아표피층 또한 무처리구에서 다소 두꺼운 것으로 관찰되었다.

Abstract ▼

This study was skin browning disorder by the harvest time and paper bag types. It was postharvest at cold storage and overripe. But unripe and mature fruit was not occurrence in ‘Chuwhangbae’ pears. According to the paper bag types of skin browning disorder was occurrence of the day with little chan

This study was skin browning disorder by the harvest time and paper bag types. It was postharvest at cold storage and overripe. But unripe and mature fruit was not occurrence in ‘Chuwhangbae’ pears. According to the paper bag types of skin browning disorder was occurrence of the day with little change in the moisture content of humidity. Skin browning disorder was ever ripened harvest time and occur in cold storage. Skin browning disorder caused and total phenol content of related substances added rind of the fruit was measured for each area compared to fruit flesh, skin and fruit core in ' Chuhwangbae' pears. It was highest fruit skin that was fruit skin highest. Total phenol content increased at the over-harvest time. Especially total phenol content was compared to the normal fruit was lower than skin browning disorder fruit in ' Hanareum' pears. Skin browning disorder and normal fruit was fruit skin including the comparison of the content of inorganic components were no differences in N, P, K, Ca
○ Title : Development of technology to reduce disorder in main pear cultivars
Physiological disorder occurs in the inadequate soil environment, weather conditions, biological environment. This study ware conducted in order to reduce physiological disorder in a new variety of pear. The growth and fruit characteristics of ‘Nittaca’ pear and new variety cultured at various altitude were investigated. Differences of normal and physiological disorder fruit between the inorganic components were researched. Irrigation, drainage, pruning method were studied. Growing areas along altitude were separated the coast (100m elevation areas within the adjacent coastal), plains (less than 100m elevation), middle (elevation 100 ~ 300m), the mountains (over 300m elevation). Growth and fruit characteristics of ' Wonhwang' and ' Nittaca' pear were investigated. The higher elevation growing season has been delayed. The plains and the middle part was blooming at same time, so, the minimum temperature damage caused extreme cold temperatures likely to encounter. Growth and fruit were different according to the farmer’s cultivation techniques, so, there was no statistical significance .
The moisture content of the soil was investigated. Soil water content were examined at –3, -4, and – 7kpa. Photosynthesis of soil moisture content in the ever – 4kpa of the adapt moisture was the highest, and photosynthesis is less the lower or higher moisture treatment than adapt condition. Photosynthesis and stomatal conductivity exhibited a positive correlation.
Irrigation was performed in order to find the appropriate time. Same amount of water and various irrigation time (6:00 am, 9:00 am, 15:00 pm, 8:00 pm) was investigated. Photosynthesis was depend upon the timing of irrigation. Photosynthesis before 12 am was higher at irrigation after sunset at 8:00 pm.
Orchard of high soil moisture were performed to investigate the effect of drainage. The underdrainage (hole-pife buried at 90cm depth ), open detches (40cm depth, slope 5%) were treated in ‘Hanarum’ orchard. were compared to shoot growth and fruit quality. Fruit enlargement and vegetative growth in underdrainage ware good than normal farming practices. But it was no statistical significance in the bad management ochard.
Rate of physiological disorder according to the weight of the fruit was investigated. Weight classes divided into more than 600g, 600 ~ 500g, 500 ~ 400g, less 400g in ' Whasan' , more than 750g, 750 ~ 600g, 600 ~ 500g, ess 500g in ' Manfung-bae' . Normal fruit and floating fruit on water in each weight class was classified. Fruit quality characteristics and content of inorganic components were compared. The rate of floating fruit was smaller in the smaller fruit. The lower of pithiness are the lower specific gravity. Floating fruit was lower potassium, calcium, magnesium concentration then normal fruit but it was statistically significant.
To appropriate prunning amount for high-quality and high-yielding, relationship between the leaf area index (LAI) and yield and fruit were analyzed in ' Wonhwang ' , ' Whasa' , ' Manfung-bea' . LAI range is represented by a quadratic equation, so, the yield and fruit qulity ware lowered below and above 1.0 to 1.2. Leaf area index to produce large quantities of high quality ware 1.0 to 1.2.
○ Title : Management of pre- and post-harvest technology for long-term fruit quality in new pear variety
1. We investigated the changes of fruit quality parameters, polysaccharide contents and cell wall components during maturation and ripening of two Korean pear cultivar ‘Hanareum’ and ‘Manpungbae’ compared with ‘Niitaka’ pear (Pyrus pyrifolia Nakai) which showed different physiological maturity based on the days after full bloom (DAFB). Flesh firmness decreased continuously with fruit development and maturation, reaching a final level of 29.4, 33.5 and 27.4N at maturity in ‘Hanareum’ (127 DAFB), ‘Manpungbae’ (163 DAFB) and ‘Niitaka’ (170 DAFB), respectively. The level of ethylene production was very low in early season ‘Hanareum’pear which showed at most 0.39uL • .L-1 at maturity and no ethylene was detected in ‘Manpungbae’ and ‘Niitaka’ at maturity. Fructose was the most abundant soluble sugar during fruit maturation in the pears tested and an increase of sucrose was observed during fruit ripening in the Asian pears commonly. Ethanol insoluble solids (EIS) content decreased gradually with different levels among the pear cultivars as fruit ripens consisted of 10.79, 12.72 and 12.75mg • ..g FW-1. The amount of total soluble polyuronides was higher in early season cultivars ‘Hanareum’ than those of mid-season cultivar ‘Manpungbae’ and ‘Niitaka’. In ‘Niitaka’ which harvested most late season, the level of 4% KOH soluble hemicelluloses was lower than ‘Hanareum’ and ‘Manpungbae’ and maintained constantly during fruit ripening period. Cellulosic residues were determined high level in ‘Niitaka’ which showed 612.33ug • ..mg EIS-1 at maturity when compared with ‘Hanareum’ (408.0ug • ..mg EIS-1) and ‘Manpungbae’ (538.67ug • ..mg EIS-1). The main constituents of cell wall neutral sugars which consisted of arabinose, xylose, galactose and glucose were decreased gradually with onset of fruit ripening regardless of cultivar. Arabinose which was predominant in ‘Hanareum’ pear decreased at the last stage of ripening, but the changes of cell wall neutral sugar during ripening were not occurred in ‘Niitaka’ pear. The change of molecular mass distribution in water soluble pectin observed dominantly at the early stage of fruit development. Depolymerization of 4% KOH-soluble hemicelluloses and degradation of xyloglucan showed in early-season cultivar ‘Hanareum’ during fruit maturation, and degradation of those fractions were detected only at the early stage fruit development in mid-season cultivar ‘Manpungbae’ and ‘Niitaka’. The molecular mass profile of CDTA soluble pectin, Na2CO3-SP and 24% KOH soluble hemicelluloses showed no significant change during fruit maturation regardless of cultivar.
2. We investigate the effect of pre-harvest spray of aminoethoxyvinylglycine (AVG), a known inhibitor of ACC synthase activity, on fruit quality of ' Wonhwang' pear (Pyrus pyrifolia Nakai). And the effects were compared with ethephon which releasing ethylene to elucidate treatment efficacy of ethylene biosynthesis inhibitor on Asian pears. Chemicals were sprayed on 30 days before harvest with AVG(75 and 150mg • L-1) and ethephon(100mg • L-1), respectively. Highest flesh firmness during 21 days of shelf-life at 25℃ after 30 days of cold storage was attained in the fruit treated with 150mg • L-1 AVG(26.5N) when compared with untreated control(16.7N), while the fruits treated with 100mg • L-1 ethephon completely lost their marketability within 14 days of shelf-life by mass drop of firmness down to 11.6N. Low incidence of physiological disorders including pithiness and core browning were attained at the fruits treated with 150mg • L-1 AVG when we compared with untreated control. No occurrence of mealiness found in the fruits treated with AVG but ethephon treated fruits showed 36.4% during 14 days of shelf-life. Consequently, AVG spray at the concentration of 150mg • L-1 on Asian pear ' Wonhwang' fruit regarded as useful preharvest management approach for keeping quality during marketing period after simulated exportation.
3. We investigate the effect of preharvest spray of aminoethoxyvinylglycine (AVG) on the fruit quality and incidence of physiological disorders during shelf-life in ‘Hanareum’ and ‘Wonhwang’ pear (Pyrus pyrifolia Nakai). AVG applications (0, 75, 150 and 300 mg • .L-1) made 30 days before anticipated harvest of respective cultivar. AVG did not influenced on fruit development and quality parameters including starch content, soluble solids and acidity at harvest time in two pear cultivar although the flesh firmness of the fruits treated 300 m g • .L-1 AVG were higher than that of control in ‘Hanareum’ pear. Among three AVG concentrations, only 300 mg • .L-1 AVG showed effectiveness on keeping flesh firmness in ‘Hanareum’ pear during shelf-life. Meanwhile, competitive high flesh firmness was attained in ‘Wonhwang’ pear treated with 150mg • .L-1 AVG (27.7 N) and 300 mg • .L-1 AVG (28.2 N) when compared with untreated control (17.8 N) during 21 days of shelf-life at 25℃AVG did not cause a significant difference at skin color development relative to control in two pear cultivars. AVG decreased ethylene production and respiration rate at 300 mg • .L-1 level in two pear cultivar during entire shelf-life. During shelf-life, low incidence of physiological disorders including internal and core browning and mealiness were attained at the fruits treated at 300 mg • .L-1 AVG in two cultivars when we compared with untreated control.
4. This study was conducted to investigate the effect of 1-methylcyclopropene(1-MCP), a known ethylene action inhibitor, on fruit quality and incidence of physiological disorders during simulated marketing period in very early-season Asian pear (Pyrus pyrifolia Nakai) ' Hanareum' which treated with 0, 0.5, 1.2 or 2.4% of GA4+7 at 35 days after full bloom (DAFB), 2013. Fruits were harvested at different times among GA treatments (2.4% GA4+7 of 105 DAFB, 1.2 and 0.5% GA4+7 of 108 DAFB, and untreated control of 112 DAFB) and treated with 1 μL • ..L-1 1-MCP for 12h at 25℃. Fruits were stored at 25℃ for 20 days and measured flesh firmness, weight loss, soluble solids, acidity, ethylene, respiration and severity of physiological disorders at five day interval. Weight loss of stored fruits were increased coincide with GA4+7 concentration and the 1-MCP treatment slightly reduced weight loss percentage during shelf-life. The flesh firmness decreased abruptly in all 1-MCP-untreated fruits as the storage period was extended to 10 days, although the firmness of 1-MCP-treated fruits were kept high value (> 30N) during 15 days of shelf-life. The effect of 1-MCP was significantly reduced when fruits were subjected to increased GA concentration. Higher soluble solids content and acidity during extended shelf-life were also apparent in 1-MCP-treated ' Hanareum' pears. The L-values (lightness), b-values (yellowness) and hue angles of 1-MCP treated samples were higher than those of controls during 20 days of shelf-life, but a-value (redness) was lower in 1-MCP treated fruits. ' Hanareum' pears showed relatively high ethylene production almost of 4μL • ..L-1 level and 1-MCP treatment did not decreased the evolution of ethylene regardless of GA concentration. Meanwhile, 1-MCP treatment to ' Hanareum' pears decreased respiration rate significantly during shelf-life. The efficacy of 1-MCP was greater in the GA-untreated fruit and reduced coincide with increased GA concentration. 1-MCP treatment influenced the severity of physiological disorders including core browning and mealiness, 1-MCP treatment completely blocked the incidence of core browning of during 15 days of shelf-life, and reduced the severity of mealiness during 20 days of shelf-life. Whereas, in the mid-season pear fruit of ' Manpungbae' , the efficacy of 1-MCP was lower than those of ' Hanareum' . Therefore we concluded that the use of 1-MCP was of great benefit for the keeping quality and the prevention of physiological disorders in early-season pear cultivar ' Hanareum' pears.
○ Title : The characteristics of anatomical structures and fruit quality of ‘M anpungbae’, ‘Hanareum’ and ‘W onhwang’ pear (pyrus pyrifolia)
We carried out to investigate physiological characteristics of ‘Manpungbae’, ‘Hanareum’ and ‘Wonhwang’ pears through the seasonal changes of pericarp structures, fruit qualities and studies of each variety characteristics to identify the cultivation problem and produce basis arrangement fo new pear variety cultivation.
The pericarp at full bloom of ‘Manpungbae’ was consists of outer epidermis, hypodermis, parenchyma cell, and inner epidermis from the exterior. The cell layers from the outer epidermis to vascular bundle increased rapidly 7-10 layers to 18-26 layers from full bloom (FB) to 77 days after full bloom (DAFB) and did not change significantly until maturity. Thus, the cell division period of ‘Manpungbae’ pear was until 77 DAFB and during this period, the thickness from hypodermis to vascular bundle increased from 73.1 μm to 195 μ m in this period. Stone cells were formed from seven to 21 DAFB and stone cell clusters were formed around 49 DAFB. The cork cell layer was formed between 49 and 77 DAFB. ‘Manpungbae’ fruit pericarp was consists of 4.5 layers of the cork cell layers and seven layers of hypodermis which has the tannin at harvest time (161 DAFB). Comparison of the fruit enlargement and fruit structure development by bagging or non-bagging showed that ‘Manpungbae’ fruits without bagging had more than three cork cell layer than those with bagging at maturity. The size of stone cell clusters were varied in two treatments. Fruit weight was higher in the non-bagging treatment but there was no difference in soluble solid contents (SSC) between two treatments. The cork cell layer numbers between yellowish brown and green pericarp were not different significantly, in 3.8 and 3.5 respectively.
The pericarp at full bloom of ‘Hanareum’ was consists of outer epidermis, hypodermis, parenchyma cell, and inner epidermis from the exterior and five types of vascular bundle tissues. Cork cell layer was formed at 70 days after full bloom (DAFB) in non-treated fruits and formed at 60 DAFB in GA treated fruits. Cell division period was from full bloom (FB) to 40DAFB and then fruit enlargement was accomplished by cell growth. Comparison of the fruit enlargement and fruit structure development by GA treatment or non-treatment showed that cell division of ‘Hanaerum’ fruits was not effected GA treatment but fruit enlargement was effected cell growth. Fruit stalk of GA treatment fruits was larger than non-treatment fruits from 40 DAFB which correspond to the period of stop of cell division and ‘Hanareum’ was regarded GA treatment expedite of vascular bundle tissue growth and relatively increased nutrient transport to fruit. In addition to, average fruit quality between non-treatment and GA treatment showed that fru it weight was higher in fruit treated by GA but firmness was lower and probably was effected fruit storing in ‘Hanareum’ pear. The pericarp at full bloom of ‘Wonhwang’ was consists of outer epidermis, hypodermis, parenchyma cell, and inner epidermis from the exterior. Cell division period was from full bloom (FB) to 60DAFB and then fruit enlargement was accomplished by cell growth. The weight of the ‘Manpunbae’ fruit was distributed from 251 g to more 900 g and the average fruit weight was 497.8 g at harvest time, and fruits in the range of 300-800 g accounted for 87.1% of total production. The SSC, acidity and SSC/acidity ratio was 10.9-13.2 °Brix, 0.24-0.34% and 33.8-57.6 respectively, and the SSC was higher in bigger fruit which had a very higher positive correlation with a fruit weight. However, the fruit firmness tended to be lower with fruit size which had a very higher negative correlation with the fruit weight and SSC.

목차 Contents

• 표지 ... 1
• 제출문 ... 2
• 요약문 ... 3
• SUMMARY ... 6
• 목차 ... 11
• 제 1 장 서 론 ... 12
• 제 2 장 국내외 기술개발 현황 ... 15
• 제 3 장 연구개발수행 내용 및 결과 ... 18
• 제 1 세부연구과제 : 배 신육성 품종의 과피흑변 방지기술 개발 ... 18
• 제 2 세부과제 : 배 주요 신품종의 생리장해 경감기술 개발 ... 33
• 제 3 세부과제 : 수확 후 장기신선도 유지를 위한 숙기조절기술 연구 ... 54
• 제 4 세부과제 : 배 신품종 과실의 생육기별 세포조직 및 품질변화 ... 104
• 제 4 장 연구개발목표 달성도 및 대외기여도 ... 135
• 제1절 : 목표대비 달성도 ... 135
• 제2절 : 정량적 성과 ... 136
• 제 5 장 연구개발결과의 활용계획 ... 137
• 제 6 장 연구개발과정에서 수집한 해외과학기술정보 ... 138
• 제 7 장 기타 중요 변동사항 ... 139
• 제 8 장 국가과학기술종합정보시스템에 등록한 연구장비 현황 ... 149
• 제 9 장 참고문헌 ... 141
• 끝페이지 ... 149