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| Correlation between Vegetative and Reproductive Traits |
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| 글쓴이 : 관리자
날짜 : 09-04-03 09:50
조회 : 12063
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Seed Orchard Management Considering the Correlation between Vegetative and Reproductive Traits in Pinus koraiensis S. et Z. <Kor. J. Breed. 39(4):419-426 2007> Corresponding author kanks@forest.go.kr
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.
Key words : Pinus koraiensis, volume growth, flowering assessment, progeny test, clone bank, seed orchard management
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