Variabilidade genética em população base de Eucalyptus viminalis em idade juvenil

The main objective of this study was to investigate genetic control for individual volume (VOL) and genetic and phenotypic correlation between trait measured at two different ages. We also assessed three different selection intensities (i=1%, i=5% and i= 10%) to understand the effects on genetic gain and effective size. Eight progeny tests were evaluated included three tests of C. citriodora (CCT), two tests of C. variegata (CCV), and three tests of C. torelliana (CTO). Narrow-sense heritability (h ̂_a^2) ranged from 0.264 to 0.62 for the CCT tests, from 0.07 to 0.21 for the CCV tests, and from 0.14 to 0.69 for CTO. The coefficients of individual genetic variation (CVgi (%)) ranged from 22.5% to 63.9% for CCT, from 19,3% to 28,3% for CCV, and from 22.8% to 41.3% for CTO. Considering a selection intensity of 10%, the Ne after selection would range from 31 to 98 for CCT, 36 to 47 for CCV, and 45 to 62 for CTO. For the TP8two CTO tests, a selection intensity greater than 10% is recommended. With ana selection intensity of 10%, genetic gains ranged from 25 to 107% for CCT, from 14 to 27% for CCV, and from 19 to 64% for CTO

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Genetic control and early selection of threeCorymbiaspecies

Miranda

Estopa

Paludeto

et al. 2024

Can. J. For. Res.

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Variabilidade genética em população base de Eucalyptus viminalis em idade juvenil

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Genetic control and early selection of threeCorymbiaspecies

Genetic control and early selection of threeCorymbiaspecies

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