English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Cryptomeria japonica e originaria da regiao temperada do Japao, onde e amplamente plantada em funcao da alta durabilidade e trabalhabilidade da madeira. O objetivo do presente trabalho foi avaliar o desempenho de procedencias japonesas de C. japonica , implantadas em 1980 na Estacao Experimental da Universidade Federal do Parana, municipio de Rio Negro, Parana. Realizou-se levantamento dendrometrico em setembro de 2011, o qual serviu de base para as analises estatisticas e geneticas. A produtividade observada aos 31 anos variou de 9,3 m³.ha -1 .ano -1 na testemunha (Camanducaia), ate 22,2 m³.ha -1 .ano -1 na procedencia Miyagi. A partir dos resultados, foram propostas estrategias de melhoramento genetico para a criacao de uma Area de Producao de Sementes (APS) e um Pomar Clonal de Sementes (PCS), bem como a selecao de individuos superiores para reproducao assexuada. Para tal, considerou-se uma intensidade de selecao que mantivesse ao maximo a variabilidade genetica entre procedencias, mas explorasse a variacao dentro de cada procedencia. As sementes produzidas terao um ganho no crescimento diametrico estimado em 9,2% para a APS (curto prazo) e de 14% para o PCS (medio prazo). Abstract A proposal for the existing germplasm of Cryptomeria japonica (L.F.) Don. at the Experimental Station of Rio Negro, PR, aiming at the production of genetic improved seeds. Cryptomeria japonica is indigenous to the temperate region of Japan where it is widely planted, due to its wood quality, high durability and workability. The aim of this study was to evaluate the performance of Japanese provenances of C. japonica , established in 1980 at Experimental Station of Parana Federal University, municipality of Rio Negro, Parana State. Dendrometric measurements were carried out in September 2011, which was the basis for statistical and genetic analysis. The productivity at age 31 years ranged from 9.3 m³.ha -1 .year -1 (control), up to 22.2 m³.ha -1 .year -1 (Miyagi). A breeding strategy was proposed based on a seed production area (SPA) and on a clonal seed orchard (CSO). Moreover superior individuals for vegetative reproduction were also selected. The selection intensity was suggested considering the maintenance of expressive genetic variability among provenances, but exploring the variation within each provenance. The estimated genetic gain for diameter growth was 9.2% for the SPA (short term) and 14% for the CSO (medium term). Keywords : Forest breeding; seed production area; clonal seed orchard.

APROVEITAMENTO DO GERMOPLASMA DE Cryptomeria japonica DA ESTAÇÃO EXPERIMENTAL DE RIO NEGRO, PR, VISANDO A PRODUÇÃO DE SEMENTES