논문 상세보기

A comparison in physiological responses and photoinhibition tolerance between superior and inferior families of Pinus densiflora under drought condition

  • 언어ENG
  • URLhttps://db.koreascholar.com/Article/Detail/297706
서비스가 종료되어 열람이 제한될 수 있습니다.
한국육종학회 (The Korean Breeding Society)
초록

This study was conducted to figure out the differences in physiological responses, e.g. growth, photosynthetic activity and water potential, and photoinhibition tolerance in photosystem between superior and inferior families of Pinus densiflora under drought condition. Superior which is KW85 and inferior which is KW40 families were selected using progeny test results of height growth. In 2007, seeds were collected from seed orchard. In 2008, seedlings were produced and cultivated, and from April 2009 drought treatment was started with shading treatment and plants were harvested in Sept. 2009. There was no significant difference in height growth between families. In case of leaf water potential, KW85 showed higher water potential under drought condition. But there was no significant difference in drought with shading treatment. There was no difference in photosynthetic rate but stomatal conductance and transpiration rate of KW85 showed lower value than KW40. So water use efficiency of KW85 showed higher value in every treatment. Non-photochemical quenching of KW40 showed higher value in drought treatment, but there was no significant difference in control and drought with shading treatment. Xanthophyll cycle pool size of KW85 showed higher value in drought treatment, but in drought with shading treatment KW40 showed higher value. Selected superior family showed higher drought tolerance according to water use efficiency, and it also has effective non-photochemical quenching ability. In contrast inferior family respond more sensitively in photoinhibition under drought condition.

저자
  • Chang-Young Oh(Department of Forest Genetic Resources, Korea Forest Research Institute) Corresponding Author
  • Sang-Urk Han(Department of Forest Genetic Resources, Korea Forest Research Institute)