실외 여름철 온난화 및 가뭄 처리가 소나무 묘목의 이상생장 반응에 미치는 영향

서지정보

ㆍ발행기관 : 한국환경생물학회 ㆍ수록지정보 : 환경생물 / 41권 / 4호
ㆍ저자명 : 조희재, 박지은, 김진서, 김광중, 김가은, 손요환

목차

1. 서 론
2. 재료 및 방법
2.1. 연구 설계
2.2. 연구 방법
2.3. 통계분석
3. 결 과
4. 고 찰
5. 결 론
적 요
CRediT authorship contribution statement
Declaration of Competing Interest
사 사
REFERENCES

영어 초록

Pinus densiflora is a fixed-growth coniferous species that elongates its shoot once a year and finishes growing in early summer. However, it may produce additional shoots in the same year in response to external stimuli, called abnormal shoot growth. This study investigated the effects of open-field summer warming and drought on the abnormal shoot growth of P. densiflora seedlings. In March 2022, two factorial combinations were constructed, including two temperature treatments (control and 4°C increase) and two precipitation treatments (control and drought), with five replicates for each combination. The temperature treatment was performed for 87 days from May 14 to August 8, 2022, and the precipitation treatment was performed for 33 days from May 14 to June 15, blocking 100% of the ambient rainfall. The abnormal shoot occurrence rate and leaf unfolding stages were measured in November, and the shoot and root collar diameter growth rates were calculated by comparing the seedling height and root collar diameter measured in August (after the cessation of treatment) and October (after the end of growing period) with the initial values (i.e., May 2022). The abnormal shoot occurrence rate significantly increased under the warming treatment, showing a 410.6% increase in the warming plots (38.4%) compared to the control plots (7.5%). There was no significant difference in the shoot and root collar diameter growth rate regarding warming and drought treatments. Abnormal shoots may have been affected by high temperatures by inducing early transition to the next ontogenetic stage.

참고 자료

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