Effect of Temperature on the Growth of Korean Valerian (Valeriana fauriei var. dasycarpa HARA)

온도가 한국산 쥐오줌풀의 생육에 미치는 영향

  • Published : 1995.07.26

Abstract

This study was carried out to know the effect of air temperature on photosynthesis and growth of Korean Valerian (valeriana fauriei var. dasycarpa HARA). The results are as follows; 1. Photosynthesis of V fauriei had highly significant relation to temperature in a quadratic regression mo­del, from which the optimum temperature for the plant growth were estimated to be $17.7^{\circ}C$. During the day­time in the field condition, the photosynthesis rate was highest at 9 a.m, then reduced to minimum at 2 p.m., and increased again thereafter. 2. Number of stomata was about $25/mm^2$ on the upper side and $85/mm^2$ on the lower side of the leaf, and the size was $21{\sim}30/{\mu}m$ in diameter. 3. A highly significant quadratic regression was noted between temperature and leaf width or root weight of V. fauriei. It was estimated from the regression equation that the optimum temperature for root growth was $20.3^{\circ}C$.

한국산 광릉쥐오줌풀에 대한 광합성 및 호흡특성과 아울러 광합성의 일중(日中)변화와 이와 관련된 특성 및 생육상황에 미치는 온도의 영향을 조사하였던 그 결과는 다음과 같다. 1. 온도와 쥐오줌풀 잎의 광합성간에는 고도로 유의한 2차곡선회귀가 인정되었으며, 이 회귀식에 의해 산출한 최대광합성을 위한 은도는 $17.7^{\circ}C$이었다. 2. 쥐오줌풀 잎의 기공수는 잎의 표면에서 약 $25/mm^2$, 이면에서 $85mm^2$이었으며 기공의 크기는 $21{\sim}30/{\mu}m$로 나타났다. 3. 온도와 쥐오줌풀의 엽폭 및 근중간에는 각각 고도로 유의한 2차곡선회귀가 인정되었으며 이 회귀식에 의해 산출한 근생장(根生長)의 최적온도는 약 $20.3^{\circ}C$이었다.

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