Genetic assessment of seed yield-related traits in superior hybrids of Paspalum plicatulum × Paspalum guenoarum
| Autor: | Patricia Bertoncelli, Larissa Arnhold Graminho, Cleber Henrique Lopes de Souza, Eder Alexandre Minski da Motta, Emerson André Pereira, Lucia Brandão Franke, Mariana Rockenbach de Ávila, Rodrigo Ramos Lopes |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Genetic gains
clustering analysis genetic gains Genetic correlation 040301 veterinary sciences Capim ramirez Melhoramento genético vegetal Randomized block design SF1-1100 0403 veterinary science Apomixis Clustering analysis genetic parameters Hybrid Paspalum plicatulum biology Genética vegetal 0402 animal and dairy science food and beverages 04 agricultural and veterinary sciences Interspecific competition Genetic parameters biology.organism_classification Semente REML/BLUP 040201 dairy & animal science genetic correlation Animal culture Inflorescence Raceme Agronomy Animal Science and Zoology Capim colchão |
| Zdroj: | Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS Revista Brasileira de Zootecnia, Volume: 48, Article number: e20190075, Published: 25 NOV 2019 Revista Brasileira de Zootecnia v.48 2019 Revista Brasileira de Zootecnia Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ Revista Brasileira de Zootecnia, Vol 48 (2019) |
| Popis: | This study aimed to estimate the genetic parameters, genetic correlations, genetic dissimilarity, and predicted gains with the selection of interspecific apomictic Paspalum plicatulum × Paspalum guenoarum hybrids in relation to seed yield traits. Nineteen genotypes that showed increased forage yield in previous studies were planted in a randomized complete block design with ten blocks. Traits evaluated in this study were: number of tillers/plant, number of reproductive tillers/plant, number of racemes/inflorescence, number of seeds/inflorescence, weight of a thousand seeds, and seed yield. Data were analyzed using a mixed model approach. The genotypes evaluated in our study showed improvement potential in relation to high heritability (H a 2 > 0.50 ), high precision (Acgen> 90%), and genetic dissimilarity (forming three groups) for seed yield traits. Seed yield showed high correlation to reproductive tillers that can be used as indirect selection tools for genetic improvement of seed yield. |
| Databáze: | OpenAIRE |
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