제주 곶자왈 희귀식물 약난초(Cremastra appendiculata var. variabilis)의 생태 및 생리적 특성 연구

다국어 초록 (Multilingual Abstract)

A variety of rare plants with unique ecological characteristics are distributed in Gotjawal of Jeju Island in Korea. In this study, among the native plants of Gotjawal, Orchidaceae medicinal orchid (Cremastra appendiculata var. variabilis), which uses underground stems for medicinal purposes, reveals the habitat environment and growth characteristics, physiological response to indoor environmental treatment, and proposes management plans. Tried to do to this end, environmental factors, the number of aboveground parts, canopy projections, growth and reproduction responses, investigated in the habitat. And in the greenhouse, physiological reactions such as photosynthesis rate, transpiration rate, water utilization efficiency, stomatal conductance, and chlorophyll content are measured under environmental (light, soil moisture content, temperature, soil organic matter) treatments, and using this value, the ecophysiological position width calculated. also investigated to growth and reproduction reactions, plant phenology.
As a result, 1) The light environment 3.04±2.79μmolm-2s-1, corresponding to the shaded area in habitat. This is because Quercus glauca (Quercus glauca) and Idesia polycarpa (Idesia polycarpa) grow densely in the crown of the upper part of the habitat and there is little light. 2) The monthly change in the number of above-ground parts (light quantity μmolm-2s-1) of C. appendiculata in their native habitat was proportional to the amount of light reaching the clinical stage, which is due to the leaf opening and vitality of I. polycarpa, a deciduous tree that makes up the canopy layer. 3) The leaves of the aerial part of the C. appendiculata appeared distinctly from the beginning of August and were green until April of the following year, but most of them withered from May. In May, as the leaves wither, the peduncle appears, blooms from mid-May, and fruits are formed from mid-July. 4) The number of digests and weight per tuber diameter was higher in the greenhouse than in the habitat. 5) The photosynthetic rate was 11.3 times, water utilization efficiency 15.9 times, and chlorophyll content 4.2 times higher than habitat at 15% of total light (p<0.05). 6) The ecophysiological position width was narrowest in light (0.573±0.154). This means that the C. appendiculata is a narrow-range species for light. 7) The response of C. appendiculata to such light was different from the response to temperature, soil moisture content, and organic matter in the factor analysis.
As a result, it is judged that C. appendiculata currently living in their natural habitat have ecological and physiological characteristics that can adapt to environments with low light. However, in order to increase the habitat photosynthetic rate, it is considered necessary to adjust the amount of light incident to about 15% by adjusting the canopy layer in the upper part of the habitat.

목차 (Table of Contents)

• Ⅰ. 서 론 1
• Ⅱ. 재료 및 방법 3
• 1. 연구 대상 3
• 2. 자생지 조사 4
• 1) 조사지 4
• 2) 환경요인 측정 5
• (1) 광량 5
• (2) 온도 5
• (3) 토양수분함량 6
• (4) 토양유기물함량 6
• (5) 토양 pH 6
• (6) 낙엽층 깊이 7
• 3) 생육 및 번식 반응 7
• 4) 개체군 조사 7
• 3. 실내 연구 환경요인 처리 8
• 1) 광량 8
• 2) 토양수분함량 8
• 3) 대기온도 10
• 4) 토양유기물함량 10
• 4. 식물계절학 10
• 5. 생육 및 번식반응 11
• 6. 생리반응 11
• 7. 생태생리적 지위 12
• 8. 통계분석 12
• Ⅲ. 결과 및 고찰 13
• 1. 자생지 환경요인 13
• 1) 광량 13
• (1) 전체 광량 13
• (2) 월별 광량 비교 14
• 2) 온도 15
• (1) 대기 온도 15
• (2) 토양 온도 16
• 3) 토양수분함량 17
• 4) 토양유기물함량 17
• 5) 토양 pH 17
• 6) 낙엽층 깊이 17
• 2. 개체군 조사 18
• 1) 월별 광량 변화에 따른 약난초의 지상부 수 18
• 3. 수관투영도 19
• 4. 식물계절학 20
• 5. 생육반응 22
• 1) 잎 길이 22
• 2) 잎 폭 23
• 3) 잎 수에 따른 지상부의 비율 24
• 4) 개엽율 25
• 6. 번식반응 26
• 1) 소화 수 26
• 2) 지하경 직경 당 무게 27
• 7. 생리반응 28
• 1) 광량 28
• (1) 광합성률 28
• (2) 증산률 30
• (3) 수분이용효율 32
• (4) 기공전도도 34
• (5) 엽록소 함량 36
• 2) 토양수분함량 38
• (1) 광합성률 38
• (2) 증산률 40
• (3) 수분이용효율 42
• (4) 기공전도도 44
• (5) 엽록소 함량 46
• 3) 대기온도 48
• (1) 광합성률 48
• (2) 증산률 50
• (3) 수분이용효율 52
• (4) 기공전도도 54
• (5) 엽록소 함량 56
• 4) 토양유기물함량 58
• (1) 광합성률 58
• (2) 증산률 60
• (3) 수분이용효율 62
• (4) 기공전도도 64
• (5) 엽록소 함량 66
• 8. 생태생리적 지위 68
• 9. 요인분석 69
• Ⅳ. 결 론 72
• Ⅴ. 참고문헌 74
• ABSTRACT 76
• 감사의 글 79