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리기다소나무와 리기테다소나무 묘목의 (苗木) 광합성능력과 순동화율 (純同化率) 비교 연구
윤양,이돈구,심상영 ( Yang Youn,Don Koo Lee,Sang Yung Shim ) 한국산림과학회 1984 한국산림과학회지 Vol.63 No.1
Photosynthetic ability and net assimilation rate were compared between two-year-old seedlings of Pinus rigida and of Pinus rigida × P. taeda F₁ to examine whether growth potential could be predicted at young stages. Six families per each species used in this study were grown at the nursery of the Institute of Forest Genetics in Suweon. Photosynthesis and net assimilation rate showed seasonal and genetic variations among the families. Photosynthetic ability of most of the families except for three families of Pinus rigida decreased with increasing ages, while net assimilation rate of all the families decreased with increasing ages. The rank of photosynthetic ability and net assimilation rate among the families varied during the experimental period. Thus, growth potential was better predicted from total photosynthetic ability and total net assimilation rate rather titan from photosynthetic ability and net assimilation rate at a certain period. Total photosynthetic ability and total net assimilation rate were correlated with total dry weight. Correlation coefficients were 0.6394 and 0.7998, respectively. Thus, growth potential of the two species could be predicted by the measurement of total photosynthetic ability and total net assimilation rate. Family K.G. No. 13×7-107 from Pinus rigida × P. taeda F₁ and family K.G. No. 1 from Pinus rigida were the best in total photosynthetic ability and total net assimilation rate within species.
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