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Variabilidade genética e estimativas de herdabilidade para o caráter germinação em matrizes de Albizia lebbeck

Authors: Rego, Flávio Luiz Hilário; Costa, Reginaldo Brito da; Contini, Adriana Zanirato; Moreno, Renata Gomez dos Santos; Rondelli, Karen Gomes da Silva; Kumimoto, Humberto Haruki;

Variabilidade genética e estimativas de herdabilidade para o caráter germinação em matrizes de Albizia lebbeck

Abstract

Em áreas rurais, buscam-se espécies arbóreas que apresentem rápido crescimento, habilidade para fixar nitrogênio e melhorar a estrutura do solo, especialmente em locais degradados, tendo usos múltiplos e facilidade para consórcio com culturas agrícolas. A Albizia lebbeck apresenta essas características. O presente estudo avaliou a variabilidade genética e estimou parâmetros genéticos em progênies de albizia para o caráter germinação. Sementes de 26 matrizes da espécie foram coletadas no município de Campo Grande, MS. Os testes de superação da dormência e germinação foram realizados no laboratório de Botânica da Universidade Católica Dom Bosco. O delineamento experimental foi o de blocos ao acaso, com cinco repetições e 15 plantas. As estimativas de herdabilidade no sentido amplo foram de 0,43 para indivíduos e 0,79 para média de matrizes, sugerindo expressivo controle genético. A seleção das 10 melhores matrizes proporcionou ganho genético de, pelo menos, 8,1%. Este germoplasma pode ser usado em programa de melhoramento genético para a espécie.

Keywords

variabilidade genética, herdabilidade, seleção, S, Agriculture (General), germinação, selection, Agriculture, heritability, S1-972, Albizia lebbeck, germination, genetic variability

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
8
Average
Average
Average
Green
gold