Growth and Wood Quality Traits in a Dipteryx alata Vog. (Fabaceae) Progeny and Provenance Test

2021 ◽  
Author(s):  
T S Santos ◽  
K Martins ◽  
A V Aguiar ◽  
M J Baptista Filho ◽  
J R Menucelli ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Ex Situ Conservation ◽  
Wood Quality ◽  
Ex Situ ◽  
Quality Traits ◽  
Brazilian Cerrado ◽  
Stem Form ◽  
Provenance Test ◽  
Multiple Uses ◽  
Dipteryx Alata

Abstract Dipteryx alata Vog. presents an excellent economic potential because of its multiple uses. However, it is currently threatened as a result of the degradation of the biome in which it occurs, the Brazilian Cerrado. Therefore, our goal was to provide subsidies for future breeding and ex situ conservation programs of D. alata. We evaluated genetic variation in growth, stem form, and wood quality traits in a progeny and provenance test planted in a random complete block design. The traits were measured in 37-year-old trees. Significant effect for provenance was obtained for all evaluated traits except bifurcation, but progeny effect was significant only for acoustic wave velocity (AWV). The estimates of individual narrow sense heritability were of low magnitude for all traits except AWV (0.24 ± 0.09). Eleven groups were formed based on Mahalanobis genetic distance with 83.1% of progenies allocated to one group. Dipteryx alata has genetic variability between progenies and provenances that can be explored to obtain genetic gain, especially for AWV. We also recommend the use of multi-trait selection index to obtain gains for both growth and wood quality traits. Controlled pollination between individuals from different progeny groups would increase variability in next generation breeding. Study Implications Dipteryx alata is a tree species that presents multiple uses and is threatened as a result of the devastation of the Brazilian Cerrado. We evaluated genetic variation in growth, stem form, and wood quality traits in a progeny and provenance test planted 37 years ago. We found genetic differences among progenies only for the wood quality trait, which can be explored to obtain genetic gains. The test is better suited for ex situ conservation, and the infusion of novel sources of germplasm is necessary for future generations of breeding.

scholarly journals Optimizing sampling efforts for ex situ conservation of genetic variability of Dipteryx alata Vogel

2011 ◽  
Vol 5 (Suppl 7) ◽  
pp. P18 ◽  
Author(s):  
Dayane B Melo ◽  
José Alexandre F Diniz-Filho ◽  
Guilherme Oliveira ◽  
Ludmilla L Santana ◽  
Thannya N Soares ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Ex Situ Conservation ◽  
Ex Situ ◽  
Dipteryx Alata

scholarly journals Structure of the phenotypic variability of fruit and seeds of Dipteryx alata vogel (Fabaceae)

2020 ◽  
Vol 42 (5) ◽  
Author(s):  
Elias Emanuel Silva Mota ◽  
Carolina Ribeiro Diniz Boaventura Novaes ◽  
Luciana Borges e Silva ◽  
Lázaro José Chaves
Keyword(s):  
Phenotypic Variability ◽  
Descriptive Analysis ◽  
Germplasm Collection ◽  
Ex Situ ◽  
Brazilian Cerrado ◽  
Phenotypic Differentiation ◽  
Fruit Species ◽  
Mother Plants ◽  
Priority Species ◽  
Dipteryx Alata

Abstract Dipteryx alata Vogel (“baru tree”) is a fruit species native to the Brazilian Cerrado and presents a multiplicity of uses, constituting a priority species for domestication and cultivation studies. The objective of the current study was to characterize fruit and seeds of D. alata from several regions of the Brazilian Cerrado biome to support strategies for ex situ conservation and utilization of the genetic variability of the species. Fruits were collected from 25 subpopulations, sampling six mother plants per subpopulation, with collection of at least 25 fruits per plant. The physical trait data of the fruits and seeds were submitted to descriptive analysis, analysis of variance and correlation among traits. There was significant variation for all traits among subpopulations and among individuals within subpopulations. The highest proportion of variability was observed among individuals within subpopulations. The phenotypic differentiation among subpopulations was higher for fruit traits compared to seed traits. The correlation analysis showed the existence of significant correlations for most of the traits pairs in the different hierarchical levels. It was concluded that D. alata presents phenotypic variability to support germplasm collection programsand formation of base populations for breeding programs, recommending the sampling in several locations to ensure an adequate representativeness of the phenotypic variability.

scholarly journals GENETIC VARIATION AND EFFECTIVE POPULATION SIZE IN DIPTERYX ALATA PROGENIES IN PEDERNEIRAS, SÃO PAULO, BRAZIL

2018 ◽  
Vol 42 (3) ◽  
Author(s):  
Wanderley dos Santos ◽  
Ananda Virginia Aguiar ◽  
Danilla Cristina Lemos Souza ◽  
Diego Gabriel Torres Dini ◽  
Francine Beatriz de Souza ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Block Design ◽  
Strict Sense ◽  
Effective Population ◽  
Stem Form ◽  
Mato Grosso ◽  
Randomized Block Design ◽  
Improvement Programs ◽  
The Individual ◽  
Dipteryx Alata

ABSTRACT Genetic and phenotypic parameters of fork (BIF), stem form (RET) and diameter at breast height (DBH) for Dipteryx alata provenances and progenies were assessed. The trial was lead in a randomized block design, with 43 treatments (26 and 17 progenies from the municipalities of Três Lagoas and Brasília in the state of Mato Grosso do Sul and Distrito Federal, Brazil, respectively) and five plants per plot. The spacing between plants was 3 x 3 meters. The data analysis was performed using the REML/BLUP method (restricted maximum likelihood best linear unbiased prediction). Significant differences were detected between progenies only for DBH. The individual genetic values ranged from 3.7 to 21.7 % for BIF and DBH; genetic variation among progenies ranged from 9 to 10.5 % for BIF and DBH among provenances. Individual heritability in the strict sense was high for DBH (minimum from 0.31), revealing the potential for genetic improvement. Provenance and progenies trial showed genetic variability which can be exploited in forest improvement programs with a broad genetic base.

Provenance and Family Variation in Biomass Potential of Loblolly Pine in the Piedmont of North Carolina

2021 ◽  
Author(s):  
Jessica A Maynor ◽  
Fikret Isik ◽  
Trevor D Walker ◽  
Ross W Whetten ◽  
Austin J Heine ◽  
...  
Keyword(s):  
North Carolina ◽  
Loblolly Pine ◽  
Wood Quality ◽  
Biofuel Production ◽  
Quality Traits ◽  
Stem Form ◽  
The Family ◽  
Stem Quality ◽  
Biomass Potential ◽  
Harvest Regimes

Abstract Considerable genetic differences in loblolly pine (Pinus taeda L.) exist for growth, stem form, and wood quality traits that influence biomass/biofuel production. By planting genetically superior trees with desirable biomass/biofuel traits, it is possible to substantially increase the amount of biomass and potential sawtimber trees produced from plantations. Ten of the fastest growing loblolly pine families from two provenances, Atlantic Coastal Plain and Piedmont, were tested for their biomass potential in North Carolina on a Piedmont site. At this northern Piedmont site at age six years, there were no provenance differences for biomass production or for trees with sawtimber potential. Variation in volume and sawtimber potential was significant at the family level. For biomass plantations, risks can be mitigated because of shorter rotation length, allowing for a higher-risk seed lot to capture greater gains in terms of volume. For a longer-rotation sawtimber stand, a more conservative family deployment strategy should be considered to maintain stem quality at the end of the rotation. Understanding the different seed source families and harvest regimes is essential to ensure profitable returns from pine plantations. Study Implications Landowners in the southeastern United States have more choices than ever before regarding the choice of genetic stock of loblolly pine seedlings they plant, and the family selection should reflect the stand management objectives with regard to growth, stem form, and wood quality traits. In a biomass/biofuel production regime, planting families from nonlocal seed sources for increased growth can potentially increase the amount of biomass and sawtimber produced from the plantation, although risks such as increased susceptibility to winter storm damage must be considered. For biomass plantations, with shorter rotation lengths, risks can be reduced allowing for a higher-risk genotype to capture the greater gains in volume. For a sawtimber stand, genotype selections should be more conservative to ensure stem quality at the end of the rotation. Understanding different genotypes and harvest regimes is essential to maximize profit from plantations.

Genetic variation of wood quality traits and relationships with growth in Picea abies

2009 ◽  
Vol 24 (1) ◽  
pp. 15-27 ◽  
Author(s):  
Arne Steffenrem ◽  
Harald Kvaalen ◽  
Olav Albert H⊘ib⊘ ◽  
Øyvind M. Edvardsen ◽  
Tore Skr⊘ppa
Keyword(s):  
Genetic Variation ◽  
Picea Abies ◽  
Wood Quality ◽  
Quality Traits

Ex-situ conservation of medicinal plant genetic resources managed by national agrobiodiversity center of Korea

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
JS Sung ◽  
CW Jeong ◽  
YY Lee ◽  
HS Lee ◽  
YA Jeon ◽  
...  
Keyword(s):  
Medicinal Plant ◽  
Genetic Resources ◽  
Ex Situ Conservation ◽  
Plant Genetic Resources ◽  
Ex Situ
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