Korean Journal of Breeding Science (한국육종학회지)

The Korean Society of Breeding Science (한국육종학회)
권호 표지

Seed Orchard Management Considering the Correlation between Vegetative and Reproductive Traits in Pinus koraiensis S. et Z.

영양생장과 생식생장간 상관을 고려한 잣나무 채종원 관리 방안

Oh, C.Y.;Kang, K.S.;Choi, W.Y.;Han, S.U.;Kim, C.S.
오창영;강규석;최완용;한상억;김장수

  • Published : 2007.12.31
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Abstract

The correlation between vegetative and reproductive traits of P. koraiensis was analyzed to obtain genetic information for seed orchard management and breeding criteria set. General combining ability (GCA) for the vegetative trait was estimated based on the volume growth and compared to reproductive growth (i.e. male and female strobili production). The volume growth was calculated as height x DBH2, which were collected from progeny tests at the ages of 8, 10, 15, and 20. Flowering assessment was conducted in a clone bank for 10 consecutive years. As a result of correlation analysis, we found that there was no significant correlation between vegetative and reproductive traits, and both traits could thus be considered independent. At age intervals of 8 through 10, 10 through 15, and 15 through 20, both traits were also not dependent. Superior families in GCA and flower production showed stably high ranks by ages, and inferior families did consistently low. This was proven and profound when upper 20% and lower 20% families were analyzed. The effect of corelation between vegetative and reproductive traits on the management of seed orchard was also discussed.

본 연구는 잣나무의 영양생장과 생식생장간의 상관관계를 구명하여 잣나무 채종원의 효율적 관리방안, 임목개량을 위한 선발기준 설정 및 우량품종 육성 등 금후 선발육종 방안을 제시하고자 하였다. 잣나무의 영양생장 분석을 위하여 차대검정 결과로부터 재적생장에 대한 일반조합능력을 추정하였으며, 재적생장은 수령 8년, 10년, 15년 및 20년 때의 수고 및 흉고직경 생장으로부터 산출하였고 이를 10년 동안의 개화량 성적과 비교·분석하였다. 그 결과 재적생장에 대한 일반조합능력과 개화량 간에는 상관관계가 나타나지 않아 서로 독립적인 형질로 판단되었다. 그리고 8년~10년, 10년~15년 및 15년~20년의 수령 간격에 있어서도 일반조합능력과 개화량 간에는 상관관계가 없는 것으로 나타났다. 일반조합능력 및 개화량이 우수한 가계는 수령 증가에 관계없이 계속하여 우수한 것으로 나타났으며, 불량한 가계는 지속적으로 불량한 것으로 나타났다. 특히 이러한 현상은 생장 및 개화가 우수한 상위 20%와 불량한 하위 20% 가계를 대상으로 분석하였을 때 더욱 뚜렷하게 입증되었다.

Keywords

References

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