Estimates of genetic parameters for juvenile traits in macaw palm
| Autor: | Elivelton Alves Lustri, Suelen Alves Vianna, Walter José Siqueira, Carlos Augusto Colombo, Joaquim Adelino de Azevedo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Materials Science (miscellaneous) Agriculture (General) Arecaceae heritability 01 natural sciences S1-972 oleaginous species Genetic variation plant breeding Plant breeding Genetic variability Genetic diversity Acrocomia aculeata biology 04 agricultural and veterinary sciences Heritability biology.organism_classification REML/BLUP Horticulture Genetic gain 040103 agronomy & agriculture 0401 agriculture forestry and fisheries General Agricultural and Biological Sciences 010606 plant biology & botany |
| Zdroj: | Bragantia, Volume: 80, Article number: e2821, Published: 03 MAY 2021 Bragantia, Vol 80 (2021) Bragantia v.80 2021 Bragantia Instituto Agronômico de Campinas (IAC) instacron:IAC |
| Popis: | Acrocomia aculeata (Jacq.) Lodd. ex. Mart. (Arecaceae) is a neotropical oil palm of widespread occurrence in the American continent and with great economic potential for the energy and food sectors. Genetic breeding studies for the species are very recent, with a need for basic knowledge from the genetic diversity in agronomic traits. Thus, the aim of this work was to estimate genetic variance, heritability, and genetic gain as well as to propose strategies of selection. Two-year evaluations of eight agromorphological characteristics were carried out in two experimental fields composed of 50 open-pollinated progenies. The results revealed moderate heritability for progeny average to thorn density in the abaxial side ( = 0.402 in Pindorama) and relative chlorophyll index ( = 0.458 in Presidente Prudente). The selective accuracy was 0.634 and 0.677 for the same traits, respectively. In the combined analysis, the higher values of heritability were obtained to thorn density on the abaxial region of leaves and relative chlorophyll index (0.616 and 0.666, respectively). Moderate to high magnitude values of genetic gain was reached for traits with greatest agronomic interest, as plant height Gs (%) = 19.64, number of leaves Gs (%) = 26.43, stipe diameter at breast height Gs (%) = 12.51, and relative chlorophyll index Gs (%) = 38.12. In conclusion, the results indicate considerable genetic variability for the evaluated traits and suggest that their most effective use for the purpose of genetic gains would be based on the combined selection between and within progenies. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|