Determination of age-age correlation and optimum selection age through juvenile selection efficiency in pinus densiflora S. et Z.

한상억(Sang Urk Han),손성인(Sung In Sohn),김종한(Jong Han Kim),전계상(Gae Sang Jhun) 한국육종학회 1991 한국육종학회지 Vol.23 No.2

Open-pollinated progeny test was established with 58 families of Pinus densiflora plus trees. Heights of 1,2,5,6,8,11,13, and 14 years after planting were measured and analyzed statistically. Heritability was 0.72 at age 1 but gradually decreased to 0.15 at age 14. Genetic and phenotypic correlation based on the log of the ratio of the two ages (LAR) was expressed as simple regression with statistical significance (r²=0.8617, 0.8573). Genetic age-age correlation was bit lower than phenotypic age-age correlation. When the mature age of P. densiflora was assumed as 30 years best efficient selection age was 11 years after planting with efficiency (E) of 1.23.

임목(林木)에서의 F₂ 이용(利用)

전계상,손성인,Jhun, Gae Sang,Sohn, Sung In 한국산림과학회 1985 한국산림과학회지 Vol.70 No.1

임목(林木)의 교잡육종(交雜育種)에서 $F_2$종자(種子)를 이용(利用)하는 데는 위험(危險)이 따르지만 한편으로 매우 간편(簡便)하고 유용(有用)한 방법(方法)일 수도 있다. 그러나 $F_2$세대(世代)에서 야기(惹起)되는 변이(變異)는 많은 육종가(育種家)들이 염려(念慮)하는 것과 같이 심각(深刻)한것 같지는 않다. 한국(韓國)의 리기테다소나무 교잡육종(交雜育種)에 관(關)한 전반적(全般的)인 견해(見解)를 피력(被瀝)한 후(後) $F_2$종자(種子) 이용(利用)을 위(爲)한 금후(今後)의 육종방안(育種方案) 및 주의(注意)할 점(點)에 대(對)하여 논(論)하였다. Utilization of $F_2$ seeds in forest tree hybridization program could be as dangerous as it could turn out to be handy and beneficial. Variation in $F_2$ generation does not appear to be dangerous as many breeder's concern. Pitch-loblolly pine hybridization program in Korea is reviewed and use of $F_2$ seeds are strongly recommended under the strict guide line of further breeding program. Breeding strategy for pitch-loblolly pine hybridization is suggested.

임목에서의 (林木) F2 이용

김계상,손성인 ( Gae Sang Jhun,Sung In Sohn ) 한국산림과학회 1985 한국산림과학회지 Vol.70 No.1

Utilization of F₂ seeds in forest tree hybridization program could be as dangerous as it could turn out to be handy and beneficial. Variation in F₂ generation does not appear to be dangerous as many breeder`s concern. Pitch-loblolly pine hybridization program in Korea is reviewed and use of F₂ seeds are strongly recommended under the strict guide line of further breeding program. Breeding strategy for pitch-loblolly pine hybridization is suggested.

리기테다 수형목 (秀型木) 차대들의 내한성에 (耐寒性) 대한 선발

박문한,손성인,전계상 ( Mun Han Park,Sung In Sohn,Gae Sang Jhun ) 한국산림과학회 1986 한국산림과학회지 Vol.75 No.1

One-year-old seedlings of open-pollinated progenies of pitch-loblolly hybrid pine plus trees were selected for cold-hardiness during cold winter of 1983-1984. Survived trees were planted in three locations. Two years later, the ratio of cold-damaged trees and 3rd year heights were recorded. The ratio of the, cold-damage trees among screened progenies were 5.6% in Kyunggi and 22.6% in Chungnam, while 9.3% and 43.3%, respectively, in unscreened control plot. Severely damaged families at one-year-old seedling stage also suffered heavy cold damage after two years. Not much differences were observed between families in 3rd year height.

전북지역에서의 미국 남부소나무류 종간 (種間) 교잡종의 생장

윤양,전계상,박문한 ( Yang Youn,Gae Sang Jhun,Moon Han Park ) 한국산림과학회 1984 한국산림과학회지 Vol.64 No.1

Hybrids among some southern pines, Pinus rigida, Pinus taeda and Pinus serotina, were tested in Chunbuk area in order to investigate their adaptability to Korean climate and soils. The results were summarized as follows; 1) Hybrids between P. rigida and P. raeda showed good growth among interspecific hybrids of southern pines tested. In particular, P. taeda×P. rigida showed remarkable growth in Chunbuk area. 2) The survival rate of P. taeda was extremely low, probably because of cold susceptibility. 3) Volume growth was correlated with width and length of cone, length of needle and needle sheath at the 1% level. 4) Hybrids were generally located between the parents in cluster analysis.

Pinus thunbergii × P . massoniana F1 교잡종 (交雜種) 유묘의 (幼苗) 특성

박문한,전계상,윤양 ( Mun Han Park,Gae Sang Jhun,Yang Youn ) 한국산림과학회 1985 한국산림과학회지 Vol.69 No.1

Pinus thunbergii × P, massoniana F₁ hybrids were made by pollinating 15 years old Japanese black pine (P. thunbergii) with Masson pine (P. massoniana) pollen, air-shipped from Taiwan. The crossability between two species were observed. Seedling height, morphological characteristics, and the composition of plhenolic compounds of these hybrids and the open-pollinated progenies of P. thunbergii were investigated. The results of the observation were as follows; 1) Number of the hybrid seeds per cone was 2.3, while open-pollinated Japanese black pine produced 26 seeds per cone. 2) All hybrid seedlings outgrew P. thunbergii, averaging 151% of mean height of Japanese black pine seedlings. The growth of hybrids was much variable, ranging from 120% to 208% of mean height of the open-pollinated progenies of P. thunbergii. 3) With regard to needle characteristics, the hybrid needles were longer and softer than those of P. thunbergii. The color of hybrid needles showed yellowish green. The positions of resin ducts in P. thunbergii observed medial, while those of hybrids showed medial and external. 4) No large difference in phenolic compound composition between hybrid and P. thunbergii was found, but phenolic compound of unknown 4 and 6 were observed only in hybrid. Further intensive work is recommended in this area.

Pinus thunbergii×P. massoniana F₁ 교잡종(交雜種) 유묘(幼苗)의 특성(特性)

박문한,전계상,윤양,Park, Mun Han,Jhun, Gae Sang,Youn, Yang 한국산림과학회 1985 한국산림과학회지 Vol.69 No.1

Pinus thunbergii를 교배모수(交配母樹)로 하고 대만(台灣)으로부터 도입(導入)된 P. massoniana 화분(花粉)으로 인공교배(人工交配)한 교잡종(交雜種)과 그의 모수(母樹) 풍매차대(風媒次代)들에 대(對)한 충실종자생산(充實種子生産), 생장(生長), 외부형태학적(外部形態學的) 특성(特性) 및 Phenol 물질함량(物質含量)을 조사(調査)하였다. 1) 구과당(毬果當) 충실종자(充實種子) 생산량(生産量)은 교잡종(交雜種)이 평균(平均) 2.3립(粒)으로 풍매(風媒) 26립(粒)에 비(比)하여 저조(低調)하였다. 2) 유묘시(幼苗時) 묘고생장(苗高生長)은 교잡종(交雜種)이 풍매차대(風媒次代)에 비(比)해 평균(平均) 151%로 우수(優秀)하였으며 120~208%의 변이(變異)를 나타냈다. 3) 침엽(針葉)의 외부형태학적(外部形態學的) 특성(特性)은 교잡종(交雜種)이 풍매차대묘(風媒次代苗)에 비(比)하여 침엽(針葉)이 부드럽고, 연(軟)하고, 길며, 연록색(軟綠色)을 나타내고 해부형태(解剖形態)에 있어서는 수지구(樹脂溝)의 위치(位置)가 P. thunbergii 풍매차대(風媒次代)는 중위(中位)인데 비(比)하여 교잡종(交雜種)들은 중위(中位)와 외위(外位)가 동시(同時)에 나타났다. 4) Phenol 물질분석(物質分析)에 있어서는 교잡종(交雜種)과 P. thunbergii 풍매차대간(風媒次代間)에 뚜렷한 차이(差異)가 없었으나 Unknown 4와 6의 물질(物質)이 교잡종(交雜種)에만 나타난 사실(事實)은 특이(特異)하나 이것이 화분수(花粉樹)에서 유래(由來)된 것인지의 여부(與否)는 좀 더 구명(究明)되어야 할 과제(課題)이다. Pinus thunbergii ${\times}$ P. massoniana $F_1$ hybrids were made by pollinating 15 years old Japanese black pine (P. thunbergii) with Masson pine (P. massoniana) pollen, air-shipped from Taiwan. The crossability between two species were observed. Seedling height, morphological characteristics, and the composition of phenolic compounds of these hybrids and the open-pollinated progenies of P. thunbergii were investigated. The results of the observation were as follows; 1) Number of the hybrid seeds per cone was 2.3, while open-pollinated Japanese black pine produced 26 seeds per cone. 2) All hybrid seedlings outgrew P. thunbergii, averaging 151% of mean height of Japanese black pine seedlings. The growth of hybrids was much variable, ranging from 120% to 208% of mean height of the open-pollinated progenies of P. thunbergii. 3) With regard to needle characteristics, the hybrid needles were longer and softer than those of P. thunbergii. The color of hybrid needles showed yellowish green. The positions of resin ducts in P. thunbergii observed medial, while those of hybrids showed medial and external. 4) No large difference in phenolic compound composition between hybrid and P. thunbergii was found, but phenolic compound of unknown 4 and 6 were observed only in hybrid. Further intensive work is recommended in this area.