Abstract: The genetic worth of radiata pine (Pinus radiata) seedlots in New Zealand can be described using the Growth & Form Plus (GF Plus(tm)) rating system (Vincent, 1998). This rating system is issued for controlled-cross material based on the relative merit and relative parental contributions. This paper looks at how between the sowing in the nursery to the point of final harvest, the proportional representation of individual parents within the mix (and therefore the genetic worth) can change (Figure 1). (no keywords)
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