首页|Effects of previous land use on genotype-by-environment interactions in two loblolly pine progeny tests

Effects of previous land use on genotype-by-environment interactions in two loblolly pine progeny tests

扫码查看
原文链接
  • NSTL
  • Elsevier
Loblolly pine (Pinus taeda L.) is widely used for forestry in southern Brazil, with most seeds coming from clonal seed orchards. This study investigated the effects of previous land use on the adaptability, stability, and productivity of loblolly pine progenies in southern Brazil, aiming to produce a second-generation clonal seed orchard (CSO). Two progeny tests were installed in southern Brazil. In FARA, 52 open-pollinated loblolly pine progenies were tested, and in TUNAS, 65 open-pollinated loblolly pine progenies were tested, 35 of which were common to both tests. FARA is a rotation area previously used for annual agronomic crops (oats, corn, soy, beans), whereas, TUNAS is a recycled loblolly pine plantation forest. The diameter at breast height (dbh) and stem height were measured at six years of age, and the wood volume was calculated. Genetic parameters were estimated using REML/BLUP method in SELEGEN software. The adaptability, stability, and productivity of the progenies were estimated by the relative performance harmonic mean of the breeding values method (MHPRVG). The breeding values for volume were used to estimate genetic gains through selection. The heritability values were slightly higher in FARA compared to those in TUNAS. Most of the individual narrow-sense heritability values were between 0.10 and 0.20 for growth traits. And most of the family-mean heritability values were above 0.50. In FARA, the selection strategy resulted in up to 26.37% genetic gain, while for TUNAS, it reached about 20%. GE effects are significant for volume. Because of the significant GE effects it is necessary to consider previous land use in the selection of genotypes for the formation of loblolly pine CSOs in the tested region. Considering the MHPRVG ranking, the maximum genetic gain estimated is 13.20%. The choice of more stable genotypes can circumvent the challenges imposed by crop rotation in the tested areas.

AdaptabilityClonal seed orchardHeritabilityStabilityPinus

Souza, Bruno Marchetti、de Aguiar, Ananda Virginia、Dambrat, Heloise Milena、Galucha, Simone Cristina、Tambarussi, Evandro Vagner、da Silva Sestrem, Mayte Sampaio Cesario、Tomigian, Dayane Samistraro、Menezes Freitas, Miguel Luiz、Venson, Ivan、Torres-Dini, Diego、Longui, Eduardo Luiz

展开 >

Univ Estadual Paulista, 56 Ave Brasil, BR-15385000 Ilha Solteira, Brazil

Embrapa Floresta, Km 111,Estr Ribeira,POB 319, BR-83411000 Colombo, Parana, Brazil

Univ Fed Parana, Av Prefeito Lothario Meissner 632, BR-80210170 Curitiba, Parana, Brazil

Rua 17 Julho, BR-2466 Guarapuava, Parana, Brazil

Univ Estadual Centro Oeste, Rua Prof Maria Roza Zanon Almeida S-N, BR-84505677 Irati, Parana, Brazil

Rua Vicente Ciccarino 1140, Curitiba, Parana, Brazil

Inst Florestal, Rua Horto 931, BR-02377000 Sao Paulo, Brazil

INIA Tacuarembo, Ruta 5 Km 386, Tacuarembo 45000, Uruguay

展开 >

2022

10.1016/j.foreco.2021.119762

Forest Ecology and Management

Forest Ecology and Management

EISCI
ISSN：0378-1127
年,卷(期)：2022.503
  • 1
  • 57