Progeny evaluation and early selection for plant height in Acacia mearnsii improve genetic gains

Acacia mearnsii De Wild. is one of the most widely cultivated forest species in Brazil. Despite its importance, studies on breeding strategies for this species are scarce. Therefore, the aim of this study was to evaluate the progeny and develop early selection strategies for A. mearnsii. Individuals...

Full description

Saved in:
Bibliographic Details
Published in:Crop breeding and applied biotechnology 2022, Vol.22 (4)
Main Authors: Bisognin, Dilson Antônio, Lencina, Kelen Haygert, Greff, Henrique Pinton, Tonetto, Thaise, Gazzana, Denise
Format: Article
Language:English
Subjects:
Acacia mearnsii
AGRONOMY
BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Breeding
Cultivation
Flowering
Genotypes
Nurseries
Offspring
Plants (botany)
Progeny
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Acacia mearnsii De Wild. is one of the most widely cultivated forest species in Brazil. Despite its importance, studies on breeding strategies for this species are scarce. Therefore, the aim of this study was to evaluate the progeny and develop early selection strategies for A. mearnsii. Individuals of half-sib progenies were classified according to their genotypic value and selected based on their relative performance. The additive effect was only significant for plant height. The best progenies and plants should be selected based on plant height after approximately 60 days of being in nursery and 2 years of field cultivation. This strategy eliminates the worse progenies, discards inferior genotypes in the nursery, eliminates unselected genotypes based on plant height before flowering, and intercrosses only the best plants in field cultivation. This resulted in an annual genetic gain of 3% for plant height and 2% for diameter at breast height.
ISSN:1518-7853
1984-7033
1984-7033
DOI:10.1590/1984-70332022v22n4a48