Genetic parameters and selection of Brachiaria decumbens hybrids for agronomic traits and resistance to spittlebugs

被引：11

作者：

Mateus, Rogerio Goncalves ^{[1
]}

Lima Barrios, Sanzio Carvalho ^{[2
]}

do Valle, Cacilda Borges ^{[2
]}

Valerio, Jose Raul ^{[2
]}

Vilela Torres, Fabricia Zimermann ^{[2
]}

Martins, Lucas Bearari ^{[1
]}

Cesar do Amaral, Pedro Nelson ^{[1
]}

机构：

[1] Univ Estadual Mato Grosso do Sul, Unidade Aquidauana, BR-79200000 Aquidauana, MS, Brazil

[2] Embrapa Gado Corte, BR-79106550 Campo Grande, MS, Brazil

来源：

CROP BREEDING AND APPLIED BIOTECHNOLOGY | 2015年 / 15卷 / 04期

关键词：

Apomixis; forage breeding; recurrent selection; selection index;

D O I：

10.1590/1984-70332015v15n4a39

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The objective of this work was to estimate genetic parameters for agronomic traits and resistance to spittlebugs in B. decumbens hybrids and to select the ones with best performance. For that, 324 hybrids were evaluated in field plots for agronomic traits and in the greenhouse for resistance to spittlebugs. Genetic variability amongst the hybrids was observed for all traits analyzed. The heritability estimates between genotypes means were higher than 0.52 for all agronomic traits and 0.98 and 0.99 for nymphal survival and nymphal period duration respectively. Hybrids with better performance than cultivar Basilisk for each individual trait were identified and also through a selection index combining all traits. Assigning weights to the different traits in the selection index did not significantly alter the rank for superior hybrids. Those were selected to continue on to the next phases of the breeding program.

引用

页码：227 / 234

页数：8

共 23 条

[1] [Anonymous], [No title captured]
[2] [Anonymous], 2007, Software Selegen-REML/BLUP: Statistical System and Computerized Genetic Selection via Mixed Linear Models. Embrapa Forests = Sistema Estatistico e Selecao Genetica Computadorizada via Modelos Lineares Mistos
[3] [Anonymous], 2005, ESTATISTICA BASICA
[4] [Anonymous], 1999, SISTEMA BRASILEIRO C
[5] [Anonymous], 2007, PESQUI AGROPECUARIA, DOI DOI 10.5216/PAT.V37I3.1867
[6] Reciprocal recurrent selection in the breeding of Brachiaria decumbens
Barrios, Sanzio C. L.
Do Valle, Cacilda B.
Alves, Geovani F.
Simeao, Rosangela M.
Jank, Liana
[J]. TROPICAL GRASSLANDS-FORRAJES TROPICALES, 2013, 1 (01): : 52 - 54
[7] Brachiaria brizantha Stapf access evaluation and estimates of genetic parameters for agronomical characters
Basso, Kelen Cristina
Simeao Resende, Rosangela Maria
do Valle, Cacilda Borges
Goncalves, Manoel Carlos
Lempp, Beatriz
[J]. ACTA SCIENTIARUM-AGRONOMY, 2009, 31 (01): : 17 - 22
[8] Estimation of genetic parameters and selection of Brachiaria humidicola progenies using a selection index
de Figueiredo, Ulisses Jose
Rodrigues Nunes, Jose Airton
do Valle, Cacilda Borges
[J]. CROP BREEDING AND APPLIED BIOTECHNOLOGY, 2012, 12 (04): : 237 - 244
[9] Euclides Valeria P. B., 1992, Revista da Sociedade Brasileira de Zootecnia, V21, P691
[10] The value of improved pastures to Brazilian beef production
Jank, Liana
Barrios, Sanzio C.
do Valle, Cacilda B.
Simeao, Rosangela M.
Alves, Geovani F.
[J]. CROP & PASTURE SCIENCE, 2014, 65 (11) : 1132 - 1137

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