한국농림기상학회지, 제 15권 제2호(2013) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 15, No. 2, (2013), pp. 102~108
DOI: 10.5532/KJAFM.2013.15.2.102
ⓒ Author(s) 2014. CC Attribution 3.0 License.


소나무 풍매차대 검정림에서의 생장 우수가계와 불량가계간
입지환경에 따른 생장과 수분이용효율 비교

오창영(1), 한상억(1) 전병환(2), 오찬진(2)
(1)국립산림과학원 산림유전자원부, (2)한국임업진흥원, (3)전남산림자원연구소

(2013년 04월 05일 접수; 2013년 06월 10일 수정; 2013년 06월 24일 수락)

A Comparison in Growth and Water Use Efficiency between
Superior and Inferior Families from Open-Pollinated Progenies of
Pinus densiflora under Different Environmental Conditions

Chang-Young Oh(1), Sang-Urk Han(1), Byung-Whan Cheon(2), Chan-Jin Oh(2)
(1)Department of Forest Genetic Resources, Korea Forest Research Institute, Suwon 441-847, Korea
(2)Korea Forestry Promotion Institute, Seoul 129-914, Korea
(3)Jeollanam-do Forest Resources Research Institute, Naju 520-833, Korea

(Received April 05, 2013; Revised June 10, 2013; Accepted June 24, 2013)

ABSTRACT
To understand the relationship of growth and water use efficiency (WUE) between superior and inferior families from open-pollinated progenies of P. densiflora, two families (one superior and one inferior families) in two open-pollinated progeny test sites were selected using volume growth at 26 years. And we compared environmental factors and WUE which was calculated from measured δ13C in the wood. The δ13C change during the last 20 years showed steady decrease and same pattern as WUE in the fertile site, while there was an inverse relationship between δ13C and WUE in poor site, indicating an interaction between gene and environment. The superior family showed higher WUE than inferior family in poor site, indicating efficient stomatal control of the former under water stress. Water use efficiency calculated by carbon isotope composition can be used as a selection criterion for drought tolerance families in open-pollinated progenies of P. densiflora.

Keyword: Pinus densiflora, Open-pollinated progenies, Drought stress, Carbon isotope composition, Water use efficiency

MAIN

적요

본 연구는 소나무 풍매차대를 대상으로 환경이 다른 두 지역에서 토양 양료 수준, 강수량 등을 조사하여 이를 생장, 수분이용효율과 비교함으로써 현지에서 건조스트레스를 받았는지 확인하고, 건조스트레스에 의한 반응에서 수분이용효율이 유전적으로 구분되는지 구명하고자 하였다. 소나무 풍매차대 26년생의 재적생장을 이용하여 생장 우수가계와 불량가계를 구분하였다. 수분이용효율은 건조기에는 증가하는 것으로 나타났다. 지난 20년간 토양 양료 조건이 좋은 곳에서는 탄소안정성동위원소 함량비는 서서히 감소하는 경향이었으며, 수분이용효율 역시 비슷한 경향으로 나타났다. 하지만 토양 양료 조건이 좋지 않은 곳에서는 유전적 요인과 환경적 요인의 상호작용으로 탄소안정성동위원소 함량비와 수분이용효율은 반대의 경향으로 나타났다. 생장우수가계는 수분 스트레스를 받는 상황에서 기공을 효과적으로 조절하여 불량가계에 비하여 토양이 불량한 지역에서 높은 수분이용효율을 나타냈다. 결론적으로 탄소안정성동위원소 함량비를 이용한 수분이용효율은 소나무 풍매차대를 대상으로 건조스트레스에 대한 선발 기준으로 이용할 수 있다.

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