Variation in Flowering Abundance and Its Impact on the Genetic Diversity of the Seed Crop. Variation in Flowering Abundance and Its Impact on the Genetic Diversity of the Seed Crop in a Norway Spruce
the genetic diversity of the seed crop in a Norway spruce seed orchard. Silva Fennica 34(3): 205–222. The variation in flowering abundance was studied in a Norway spruce seed orchard, located in southern Finland (62°13'N, 25°24'E), consisting of 67 clones from northern Finland (64°–67°N)....
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.335.9681 http://www.metla.fi/silvafennica/full/sf34/sf343205.pdf |
| Summary: | the genetic diversity of the seed crop in a Norway spruce seed orchard. Silva Fennica 34(3): 205–222. The variation in flowering abundance was studied in a Norway spruce seed orchard, located in southern Finland (62°13'N, 25°24'E), consisting of 67 clones from northern Finland (64°–67°N). The flowering variation in 1984–1996 was studied at the annual, clonal and graft level. In addition, the genetic diversity of an imaginary seed crop was estimated using a concept of status number. The between-year variation was large in both female and male flowering. Differences in flowering abundance among the clones were large and statistically significant in all the years studied. The average broad-sense heritability values for female and male flowering were 0.37 and 0.38, respectively, but varied considerably from year to year. The correlations between the flowering abundance of the clones in different years were usually positive and significant. However, the correlations for two pairs of successive good flowering years showed that the same clones usually flowered well in the first year in both pairs of years, and the other clones in the second year. The clonal differences in |
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