GENETIC VARIABILITY OF HALF SIBS EUCALYPTUS PROGENIES FOR COLD TOLERANCE

Autor: Moraes, Cristiano Bueno de, Carvalho, Edmar Vinicius de, Zimback, Leo, Limeira Luz, Otavio dos Santos, Pieroni, Gustavo Bloise, Mori, Edson Seizo [UNESP], Alves de Barros Leal, Tarcisio Castro
Přispěvatelé: Univ Fed Tocantins, Inst Florestal Estado Sao Paulo, Palmasola, Universidade Estadual Paulista (Unesp)
Jazyk: portugalština
Rok vydání: 2015
Předmět:
Zdroj: Web of Science
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 0100-6762
Popis: Made available in DSpace on 2018-11-26T16:26:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-11-01. Added 1 bitstream(s) on 2021-07-15T14:31:45Z : No. of bitstreams: 1 S0100-67622015000601047.pdf: 581001 bytes, checksum: 421bef850066d7e79201ff80d7f08f22 (MD5) The aim of this study was to estimate quantitative genetic parameters of progenies under frost situations and to determine the interaction of genotype x environments for Eucalyptus dunnii progenies in two different sites. The progeny trials were set up in 2010, using 20 open pollination progenies of E. dunnii. The following variables were evaluated: plant height (HGT), diameter at breast height (DBH), and wood volume (VOL) in cubic meters. Descriptive and statistical analysis were used as well as phenotypic/genotype correlation by location and joint variance analysis and the genetic parameters were estimated. Significant differences were detected (p< 0,05) among progenies for silvicultural characters, suggesting the possibilities for selection gain. By the joint analysis, the interaction of progenies x environments (P x E) did not show significant differences, confirming that the superior progenies identified in the tests can be used for both studied locations. The genetic and phenotypic correlations results ranged from low to high (0.23 to 1.0) values for the studied characters, and the great majority of correlations were significant (p< 0,05) in which the diameter at breast height was highly correlated with volume. Because of high genetic variability and genetic control of the characters, the population allows to obtain gains with selection between in the progenies. Univ Fed Tocantins, Campus Univ Gurupi, Gurupi, TO, Brazil Univ Fed Tocantins, Programa Posgrad & Prod Vegetal, Gurupi, TO, Brazil Inst Florestal Estado Sao Paulo, Floresta Estadual Botucatu, Botucatu, SP, Brazil Palmasola, Madeiras & Agr, Palma Sola, SC, Brazil Univ Estadual Paulista, Fac Ciencias Agron Botucatu, Dept Agr & Melhoramento Vegetal, Botucatu, SP, Brazil Univ Estadual Paulista, Fac Ciencias Agron Botucatu, Dept Agr & Melhoramento Vegetal, Botucatu, SP, Brazil
Databáze: OpenAIRE
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