JUVENILE-MATURE GENETIC CORRELATIONS IN <i>Pinus taeda</i> CLONES PROPAGATED VIA SOMATIC EMBRYOGENESIS

Dias, Poliana Coqueiro; Xavier, Aloisio; Resende, Marcos Deon Vilela de; Biernaski, Fabrício Antonio; Estopa, Regiane Abjaud; Pires, Ismael Eleotério

doi:10.1590/0100-67622016000200008

Acessibilidade / Reportar erro

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

Articles • Rev. Árvore 40 (2) • Mar-Apr 2016 • https://doi.org/10.1590/0100-67622016000200008 copy

JUVENILE-MATURE GENETIC CORRELATIONS IN Pinus taeda CLONES PROPAGATED VIA SOMATIC EMBRYOGENESIS

CORRELAÇÃO GENÉTICA JUVENIL-ADULTA EM CLONES DE Pinus taeda PROPAGADOS VIA EMBRIOGÊNESE SOMÁTICA

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

This study aimed to estimate the genetic correlation among selection ages (juvenile - adult) and efficiency of early selection for the height, diameter, and volume traits of individuals from Pinus taeda families propagated via somatic embryogenesis. This study was carried out by genetic-statistical analysis, estimation procedure of variance (Reml), and prediction components of breeding values (Blup), using the Selegen-Reml/Blup software. Genetic correlations among juvenile ages and rotation age were performed by applying the linear model developed by Lambeth (1980). In accordance with results of the established model, the early selection can be performed in clones of Pinus taeda with high selection efficiency. Ages from 4 to 6 years old are enough to select Pinus taeda clones propagated via somatic embryogenesis for harvesting at 8 and 12 years old; and 6 to 10 years old are enough to select them for harvesting at 20 years old. On the basis of the genetic correlations estimates from the environments, the clones' selection of Pinus taeda propagated via somatic embryogenesis should be developed specifically for each environment. The clones' selection can be performed considering the diameter due to the high correlation between volume and diameter.

Keywords:
Forest improvement; Clonal forestry; Early selection

Table 1 Description of installed clonal tests with clones of Pinus taeda propagated via somatic embryogenesis

States	Local	Experiments	Clones	Number of blocks	Plants/plot
SC	Site 1	1	1-3536-147	126	1
	Site 1	2	164-178179-215	126	1
	Site 2	1	1-94	6	1
	Site 2	2	164-193	6	1
PR	Site 3	1	1-5455-160	126	1
	Site 3	2	164-196	6	1
	Site 4	1	1-110	6	1
	Site 4	2	164-179164-238	126	1
General total of different clones:		238
Common clones in the four environments:			126

Table 3 Genetic correlations between selection ages (1-3; 1-4; and 3-4 years old) for the height (Ht), diameter (dbh), survival (sur), and volume (vol) evaluated by clonal tests propagated via somatic embryogenesis in Pinus taeda located at four sites (site 1, site 2, site 3, and site 4)

Local	Ht		dbh		sur		vol
Local	Ages	Correlations	Ages	Correlations	Ages	Correlations	Ages	Correlations
SITE1	1-3	0.59	1-3	0.55	1-3	0.41	1-3	0.55
	1-4	0.48	1-4	0.50	1-4	0.30	1-4	0.50
	3-4	0.88	3-4	0.92	3-4	0.87	3-4	0.91
SITE2	1-3	0.77	1-3	0.75	1-3	0.78	1-3	0.73
	1-4	0.66	1-4	0.71	1-4	0.73	1-4	0.70
	3-4	0.92	3-4	0.97	3-4	0.95	3-4	0.96
SITE3	1-3	0.87	1-3	0.83	1-3	0.90	1-3	0.87
	1-4	0.65	1-4	0.79	1-4	0.66	1-4	0.80
	3-4	0.73	3-4	0.94	3-4	0.70	3-4	0.94
SITE4	1-3	0.81	1-3	0.69	1-3	0.78	1-3	0.73
	1-4	0.76	1-4	0.66	1-4	0.84	1-4	0.71
	3-4	0.96	3-4	0.97	3-4	0.94	3-4	0.97

Table 5 Correlation (cor) among ages selection (juvenile - adult) and selection efficiency (E) for the height (Ht), 1.30 m diameter (dbh), and volume (vol) traits obtained from clonal tests of Pinus taeda propagated via somatic embryogenesis, located in four different environments (Sitel; Site2; Site3; and Site4), with 8, 12, and 20 years old as reference ages for correlation with youth ages

Characteristics	Selection	Site1		Site2		Site3		Site4		All sites
Characteristics	Age	Cor	E	Cor	E	Cor	E	Cor	E	Cor	E
Ht	4-8	0.673	0.925	0.831	1.143	0.884	1.216	0.904	1.243	0.859	1.181
	6-8	0.872	1.163	0.912	1.216	0.928	1.237	0.948	1.264	0.924	1.232
	4-12	0.474	0.889	0.750	1.406	0.839	1.573	0.859	1.611	0.794	1.489
	6-12	0.673	1.010	0.831	1.247	0.884	1.326	0.904	1.356	0.859	1.289
	8-12	0.814	1.018	0.889	1.111	0.915	1.144	0.935	1.169	0.905	1.131
	10-12	0.924	0.990	0.934	1.001	0.940	1.007	0.960	1.029	0.941	1.008
	4-20	0.223	0.641	0.648	1.863	0.783	2.251	0. 803	2.309	0.712	2.047
	6-20	0.422	0.971	0.729	1.677	0.828	1.904	0.848	1.950	0.777	1.787
	8-20	0.564	1.081	0.787	1.508	0.859	1.646	0.879	1.685	0.823	1.577
	10-20	0.673	1.106	0.831	1.365	0.884	1.452	0.904	1.485	0.859	1.411
	12-20	0.762	1.095	0.868	1.248	0.904	1.300	0.924	1.328	0.888	1.277
	14-20	0.838	1.071	0.899	1.149	0.921	1.177	0.941	1.202	0.913	1.167
	16-20	0.904	1.040	0.925	1.064	0.935	1.075	0.955	1.098	0.934	1.074
	18-20	0.962	1.006	0.949	0.992	0.948	0.991	0.968	1.012	0.953	0.996
*dbh*	4-8	0.740	1.018	0.821	1.129	0.912	1.254	0.902	1.240	0.874	1.202
	6-8	0.951	1.268	0.914	1.219	0.981	1.308	0.971	1.295	0.960	1.280
	4-12	0.529	0.992	0.727	1.363	0.843	1.581	0.833	1.562	0.789	1.479
	6-12	0.740	1.110	0.821	1.232	0.912	1.368	0.902	1.353	0.874	1.311
	8-12	0.889	1.111	0.887	1.109	0.961	1.201	0.951	1.189	0.935	1.169
	10-12	1.005	1.077	0.938	1.005	0.999	1.070	0.989	1.060	0.982	1.052
	4-20	0.263	0.756	0.610	1.754	0.756	2.174	0.746	2.145	0.682	1.961
	6-20	0.474	1.090	0.703	1.617	0.825	1.898	0.815	1.875	0.767	1.764
	8-20	0.624	1.196	0.769	1.474	0.874	1.675	0.864	1.656	0.828	1.587
	10-20	0.740	1.216	0.821	1.349	0.912	1.498	0.902	1.482	0.874	1.436
	12-20	0.834	1.199	0.862	1.239	0.943	1.356	0.933	1.341	0.913	1.312
	14-20	0.914	1.168	0.898	1.147	0.969	1.238	0.959	1.225	0.945	1.208
	16-20	0.984	1.132	0.929	1.068	0.992	1.141	0.982	1.129	0.973	1.119
	18-20	1.000	1.093	0.956	0.999	1000	1.058	1.000	1048	0.998	1.043
*vol*	4-8	0.396	0.545	0.593	0.815	0.777	1.068	0.725	0.997	0.868	1.194
	6-8	0.720	0.960	0.849	1.132	0.919	1.225	0.903	1.204	0.957	1.276
	4-12	0.071	0.133	0.338	0.634	0.635	1.191	0.547	1.026	0.778	1.459
	6-12	0.396	0.594	0.593	0.890	0.777	1.166	0.725	1.088	0.868	1.302
	8-12	0.626	0.783	0.775	0.969	0.878	1.098	0.852	1.065	0.931	1.164
	10-12	0.804	0.861	0.915	0.980	0.956	1.024	0.950	1.018	0.980	1.050
	4-20	-0.338	-0.972	0.016	0.046	0.457	1.314	0.322	0.926	0.666	1.915
	6-20	-0.013	-0.030	0.271	0.623	0.599	1.378	0.500	1.150	0.755	1.737
	8-20	0.217	0.416	0.453	0.868	0.699	1.340	0.627	1.202	0.818	1.568
	10-20	0.396	0.651	0.593	0.974	0.777	1.277	0.725	1.191	0.868	1.426
	12-20	0.541	0.778	0.708	1.018	0.841	1.209	0.805	1.157	0.908	1.305
	14-20	0.664	0.848	0.805	1.029	0.895	1.144	0.873	1.116	0.941	1.202
	16-20	0.772	0.888	0.890	1.024	0.942	1.083	0.932	1.072	0.971	1.117
	18-20	0.866	0.905	0.964	1.008	0.983	1.028	0.984	1.029	0.997	1.042

Sociedade de Investigações Florestais Universidade Federal de Viçosa, CEP: 36570-900 - Viçosa - Minas Gerais - Brazil, Tel: (55 31) 3612-3959 - Viçosa - MG - Brazil
E-mail: rarvore@sif.org.br

Acompanhe os números deste periódico no seu leitor de RSS

[1] *Corresponding author.

Years	Genetic correlations among traits
Years	Htxdbh	Htxsur	Htxvol	dbhxsur	dbhxvol	surxvol
1	0.890	0.171	0.869	0.197	0.887	0.202
3	0.881	0.217	0.874	0.236	0.952	0.171
4	0.523	0.103	0.456	0.251	0.932	0.353
Years	Genetic correlations among sites for volume
Years	Site1xSite2	Site1xSite3	Site1xSite4	Site2xSite3	Site2xSite4	Site3xSite4
1	0.637	0.250	0.326	0.349	0.258	0.590
3	0.371	0.337	0.547	0.401	0.484	0.555
4	0.404	0.429	0.511	0.544	0.384	0.487

Local	Traits	LAR			LAR²
Local	Traits	a	b	r²	a	b	r²
Site1	Ht	1.014	0.491	0.606	0.880	-0.299	0.594
	dbh	1.101	0.519	0.767	0.968	-0.324	0.750
	vol	0.953	0.348	0.840	0.860	-0.214	0.844
Site2	Ht	0.970	0.198	0.771	0.923	-0.127	0.840
	dbh	1.030	0.229	0.979	0.965	-0.137	0.933
	vol	1.028	0.273	0.809	0.948	-0.161	0.750
Site3	Ht	0.957	0.110	0.750	0.929	-0.070	0.789
	dbh	1.027	0.173	0.946	0.978	-0.103	0.894
	vol	1.019	0.153	0.921	0.977	-0.092	0.892
Site4	Ht	0.978	0.108	0.871	0.948	-0.066	0.860
	dbh	1.021	0.166	0.797	0.973	-0.099	0.748
	vol	1.028	0.190	0.865	0.974	-0.114	0.819
All Sites	Ht	0.968	0.158	0.508	0.928	-0.158	0.533
	dbh	1.024	0.208	0.701	0.965	-0.125	0.666
	vol	1.021	0.223	0.623	0.958	-0.133	0.590
Local	Traits	LAR			LAR²
Local	Traits	a	b	r²	a	b	r²
Site1	Ht	1.014	0.491	0.606	0.880	-0.299	0.594
	dbh	1.101	0.519	0.767	0.968	-0.324	0.750
	vol	0.953	0.348	0.840	0.860	-0.214	0.844
Site2	Ht	0.970	0.198	0.771	0.923	-0.127	0.840
	dbh	1.030	0.229	0.979	0.965	-0.137	0.933
	vol	1.028	0.273	0.809	0.948	-0.161	0.750
Site3	Ht	0.957	0.110	0.750	0.929	-0.070	0.789
	dbh	1.027	0.173	0.946	0.978	-0.103	0.894
	vol	1.019	0.153	0.921	0.977	-0.092	0.892
Site4	Ht	0.978	0.108	0.871	0.948	-0.066	0.860
	dbh	1.021	0.166	0.797	0.973	-0.099	0.748
	vol	1.028	0.190	0.865	0.974	-0.114	0.819
All Sites	Ht	0.968	0.158	0.508	0.928	-0.158	0.533
	dbh	1.024	0.208	0.701	0.965	-0.125	0.666
	vol	1.021	0.223	0.623	0.958	-0.133	0.590
Local	Traits	LAR			LAR²
Local	Traits	a	b	r²	a	b	r²
Site1	Ht	1.014	0.491	0.606	0.880	-0.299	0.594
	dbh	1.101	0.519	0.767	0.968	-0.324	0.750
	vol	0.953	0.348	0.840	0.860	-0.214	0.844
Site2	Ht	0.970	0.198	0.771	0.923	-0.127	0.840
	dbh	1.030	0.229	0.979	0.965	-0.137	0.933
	vol	1.028	0.273	0.809	0.948	-0.161	0.750
Site3	Ht	0.957	0.110	0.750	0.929	-0.070	0.789
	dbh	1.027	0.173	0.946	0.978	-0.103	0.894
	vol	1.019	0.153	0.921	0.977	-0.092	0.892
Site4	Ht	0.978	0.108	0.871	0.948	-0.066	0.860
	dbh	1.021	0.166	0.797	0.973	-0.099	0.748
	vol	1.028	0.190	0.865	0.974	-0.114	0.819
All Sites	Ht	0.968	0.158	0.508	0.928	-0.158	0.533
	dbh	1.024	0.208	0.701	0.965	-0.125	0.666
	vol	1.021	0.223	0.623	0.958	-0.133	0.590