Growth Stimulation of Pines by Artificial Inoculation with Mycorrhizal Fungus, Pisolithus tinctorius

균근균(菌根菌)의 인공접종(人工接種)에 의(依)한 소나무류(類)의 생장촉진(生長促進)

  • Received : 1982.02.18
  • Published : 1982.03.30

Abstract

Two ectomycorrhizal fungi, Pisolithus tinctorius and Thelephora terrestris, were introduced form U.S.A. and inoculated to five pine species in Korea to evaluate the reported growth stimulation of host plants after inoculation. These fungi were grown as mycelial inoculum in large quantity and ioculated to the fumigated nursery soil just before seed sowing. At the end of the first growing season. Pisolithus stimulated the height growth of Pinus densiflora. P. thunbergii. P. rigida, and P. rigida x teada by55, 36, 69, and 37%, respectively, compared with control seedlings with no fumigation and no inoculation. When the growth stimulation was expressed with dry weight, Pisolithus increased dry weight of P. densiflora and P. rigida x taeda by 143% and 128%, respectively, over control seedling. Thelephora failed to stimulate growth of inoculated plants. Pinus koraiensis did not respond to the inoculation during the first growing season. It is concluded that artificial inoculation of nursery pine trees with selected mycorrhizal fungi should be seriously considered to improve the quality of planting stocks and to stimulate early plant growth. The potential for use of Pisolithus in reforestation on adverse sited is also discussed.

美國에서 Pisolithus tinctorious(P.t.), Thelephora terrestris(T.t.)의 두 가지 외생균근균(外生菌根菌)을 도입(導入)하여 한국(韓國)에 있는 5개(個) 소나무수종(樹種)에 인공접종(人工接種)하여 그들의 생장촉진효과(生長促進効果)를 측정(測定)하였다. P.t.와 T.t.균계(菌系)를 대량증식배양(大量增殖培養)하여, 파종(播種) 직전(直前)에 Methyl bromide로 훈증(薰蒸)된 토양(土壤)에 접종(接種)하였다. 생장(生長) 첫해에, P.t.로 접종(接種)한 Pinus densiflora, P. thunbergii, P. rigida, P. rigida${\times}$taeda묘목(苗木)은 무처리묘목(無處理苗木)보다 수고생장(樹高生長)이 각각(各各) 55%, 36%, 69%, 37% 증가(增加)되었다. P. densiflora, P. rigida${\times}$taeda묘목(苗木)의 건중량(乾重量)에서는 P.t. 접종묘(接種苗)가 무처리묘목(無處理苗木)보다 각각(各各) 143%, 128% 증가(增加)되었다. 그러나 P. koraiensis에서는 생장(生長) 첫해에 균근균접종효과(菌根菌接種効果)가 나타나지 않았고 접종(接種)된 5개수종(個樹種)에서 T.t. 접종효과(接種効果)는 없었다. 우수(優秀)한 균근균(菌根菌)을 선발(選拔)하여 묘포장(苗圃場)에 인공접종(人工接種)할 경우 파종묘(播種苗)의 초기생장(初期生長)이 촉진(促進)되고, 묘목(苗木)의 품질향상(品質向上)을 도모(圖謀)할 수 있다고 결론(結論)지을 수 있다. 맹폐지조림시(荒廢地造林時) P.t.균(菌)의 이용(利用)에 관(関)하여서도 토의(討議)하였다.

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