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Is the genetic variability of elite rice in southern Brazil really disappearing?
Is the genetic variability of elite rice in southern Brazil really disappearing?
- Source :
- Crop Breeding and Applied Biotechnology v.20 n.2 2020, Crop Breeding and Applied Biotechnology, Sociedade Brasileira de Melhoramento de Plantas, instacron:CBAB, Crop Breeding and Applied Biotechnology, Volume: 20, Issue: 2, Article number: e262620214, Published: 17 JUL 2020, Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice), Empresa Brasileira de Pesquisa Agropecuária (Embrapa), instacron:EMBRAPA
- Publication Year :
- 2020
- Publisher :
- Crop Breeding and Applied Biotechnology, 2020.
-
Abstract
- There is a worldwide concern about a possible narrowing of the genetic base of most crops, as e.g. that of rice (Oryza sativa L.), as a result of the modern breeding practices. Thus, the purpose of this study was to investigate this phenomenon in the germplasm of elite paddy rice in southern Brazil, including frequently used accessions in crosses. The panel consisted of 91 accessions. Data of morphological traits, SNP markers and mineral content of husked and polished grain were analyzed by hierarchical clustering and principal component analysis. The SNP markers and hierarchical clustering proved most appropriate to assess the genetic variability. A narrowing of the genetic base of rice was confirmed, although a certain level of genetic variability was still found in the germplasm of elite paddy rice in south Brazilian rice, particularly for grain mineral content. Made available in DSpace on 2021-01-22T09:04:28Z (GMT). No. of bitstreams: 1 Artigo-Busanello-et-al-2020.pdf: 1994579 bytes, checksum: 7df191a977188fc578f6ec9820499c9d (MD5) Previous issue date: 2020
- Subjects :
- 0106 biological sciences
Germplasm
phenotyping
Biology
01 natural sciences
Genetic variation
genetic variability
Genetic variability
Genetic resources
General Environmental Science
Oryza sativa L
Genetic diversity
Oryza sativa
Germoplasma
Arroz Irrigado
food and beverages
04 agricultural and veterinary sciences
Hierarchical clustering
Agronomy
genotyping
Arroz
Plant morphology
Genetic marker
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
General Earth and Planetary Sciences
Genética Vegetal
Agronomy and Crop Science
010606 plant biology & botany
Biotechnology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Crop Breeding and Applied Biotechnology v.20 n.2 2020, Crop Breeding and Applied Biotechnology, Sociedade Brasileira de Melhoramento de Plantas, instacron:CBAB, Crop Breeding and Applied Biotechnology, Volume: 20, Issue: 2, Article number: e262620214, Published: 17 JUL 2020, Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice), Empresa Brasileira de Pesquisa Agropecuária (Embrapa), instacron:EMBRAPA
- Accession number :
- edsair.doi.dedup.....c0b38ec18db9467c3ed16366f6c8b401