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Depletion of stem non-structural carbohydrates supports release of lateral branches from apical control in Quercus mongolica seedlings

첫 페이지 보기
  • 발행기관
    강원대학교 산림과학연구소 바로가기
  • 간행물
    강원대학교 산림과학연구소 학술대회 바로가기
  • 통권
    2022 International symposium of Institute of Forest Science for the 40th Anniversary of College of Forest and Environment Science (2022.10)바로가기
  • 페이지
    pp.97-97
  • 저자
    Xiujun Lu
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A450470

원문정보

초록

영어
The stored non-structural carbohydrates (NSC) (i.e. sugars and starch) in trees play an important role in metabolism and growth, but their relationship with plant architecture is poorly understood. Mongolian oak (Quercus mongolica) is an important economic hardwood species in northeast China, but a lack of apical control during the seedling stage may reduce the potential to grow quality timber. In this research, we quantified the effects of repeated pruning (RP) on morphology, biomass, and NSC dynamics in Mongolian oak seedlings. The RP treatment significantly promoted the growth of terminal shoot by increasing the length of the second flush; however, rapid recovery of lateral branch growth indicated that the capacity for apical control was not enhanced. The RP treatment significantly modified longitudinal NSC distribution pattern in different growth units (GUs) of the stem, with higher NSC reserves in the upper parts of the stem expected to enhance growth potential. The sustained total NSC storage of the whole seedling, together with starch depletion at GU1 of the stem, indicated that both the carbohydrate status of the whole seedling and the local costs of starch are the reasons for maintaining the active branch growth. The quantification of the temporal and spatial variation in sugars and starch concentrations in different tissues improved our understanding of NSC dynamics in Mongolian oak, revealing the potential relationships between carbohydrate status and plant apical dominance in trees.

키워드

Mongolica oak non-structural carbohydrates pruning seedlings

저자

  • Xiujun Lu [ Shenyang Agricultural University, China ] Corresponding Author

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    강원대학교 산림과학연구소 [Institute of Forest Science Kangwon National University]
  • 설립연도
    1975
  • 분야
    농수해양>임학
  • 소개
    강원대학교부설산림과학연구소(이하 “연구소”라 한다)는 산림에 관한 제반 학술적 연구를 통하여 산림자원의 효용을 밝히고 임업 및 임산업의 발전에 기여함을 목적으로 한다.

간행물

  • 간행물명
    강원대학교 산림과학연구소 학술대회
  • 간기
    부정기
  • 수록기간
    2017~2024
  • 십진분류
    KDC 526 DDC 634

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