Plant Cross Breeding
Mostrando 1-12 de 58 artigos, teses e dissertações.
-
1. Genetic divergence and combined selection for traits that provide high agronomic performance in common bean lines
ABSTRACT The selection of common bean lines with intermediate cycle, upright plant architecture and high grain yield is an important goal of breeding programs. This study proposes to examine the genetic diversity of common bean genotypes for agronomic traits, select superior genotypes for traits that provide high agronomic performance and define promising cr
Revista Ceres. Publicado em: 2022
-
2. Resistance of cocoa to Moniliophthora perniciosa – progenitors and progenies selection
ABSTRACT Witches' broom, caused by Moniliophthora perniciosa, is the most important cacao disease in Brazil, and the final objective of this study is increasing the level and durability of resistance to this fungus, through the association of different alleles or genes favorable to the character, for the generation of new cocoa varieties. It was conducted, f
Revista Ceres. Publicado em: 2022
-
3. A literature review of the pollination strategies and breeding systems in Oncidiinae orchids
ABSTRACT Oncidiinae is an exclusively Neotropical orchid subtribe with about 1600 described species and an impressive array of vegetative and floral morphological adaptations. We present the results of a literature survey on the pollination strategies and breeding systems of this orchid subtribe. The flowers are pollinated by a wide range of insects (mostly
Acta Bot. Bras.. Publicado em: 25/11/2019
-
4. Engineering biodiversity as a model for the species conservation
Abstract: Early humans have domesticated plant and animal species based on ancient empirical concepts (Darwin 1868, 1876). In 1886, Mendel established a new paradigm of hereditary laws (Mendel 1866, 1870, 1950) based on genotypic and phenotypic traits of cross-compatible species, establishing a complex breeding technology that is currently utilized for the d
An. Acad. Bras. Ciênc.. Publicado em: 30/09/2019
-
5. Pollen viability and stigma receptivity in Swainsona formosa (G.Don) J.Thompson (Fabaceae), an ornamental legume native to Australia
Abstract Pollen viability and stigma receptivity are prerequisites for successful cross-pollination and seed set in Swainsona formosa. In this study, the pollen viabilities and stigma receptivities was assayed by in vitro pollen germination and simple hand-pollination method on glasshouse-grown plants, respectively. The viability of pollen grains was tested
Ornam. Hortic.. Publicado em: 12/08/2019
-
6. Vigor and mortality of citrus progenies with potential use as rootstocks
ABSTRACT: Rootstocks influence certain characteristics of the scion, such as vigor, fruit yield and quality, and tolerance to biotic and abiotic factors. In conventional citrus breeding programs, hybridization is the main method used for obtaining rootstock varieties. Between Sept and Oct 2006, controlled pollinations were carried out resulting in nine proge
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-08
-
7. Mapping QTLs for drought tolerance in a SEA 5 x AND 277 common bean cross with SSRs and SNP markers
Abstract The common bean is characterized by high sensitivity to drought and low productivity. Breeding for drought resistance in this species involves genes of different genetic groups. In this work, we used a SEA 5 x AND 277 cross to map quantitative trait loci associated with drought tolerance in order to assess the factors that determine the magnitude of
Genet. Mol. Biol.. Publicado em: 23/10/2017
-
8. Diversidade genética de Qualea grandiflora Mart estimada por microssatélites em quatro áreas de Cerrado do estado de São Paulo / Genetic diversity of Qualea grandiflora Mart estimated by microsatellites in four Cerrado areas of São Paulo
This study deals with the structure and genetic diversity of a species typical of the Brazilian Cerrado, Qualea grandiflora Mart (Vochysiaceae), present in different physiognomies of this biome. We developed eight microsatellite loci to analyze 420 samples of adult individuals from four populations distributed in the state of São Paulo, three of them in uni
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/07/2012
-
9. Diversidade em Psidium guajava L. por caracteres morfológicos, moleculares e citogenéticos / Diversity in Psidium guajava L. by morphological, molecular and cytogenetics
Guava (Psidium guajava L.) is one of the most economically important fruit crop from Myrtaceae family. Brazil is one of the largest producers of guava in the world, which is a potential crop in growth and profitability. Cross-pollination of the species and the existence of heterogeneous seminal propagation orchards result in variability, allowing the selecti
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/07/2012
-
10. FAEM Carlasul: new white oat cultivar with high grain yield
The white oat cultivar FAEM Carlasul was developed at the Plant Genomics and Breeding Center, Faculty of Agronomy Eliseu Maciel, Federal University of Pelotas, as a result of the cross between UFRGS 10 and 90SAT-28 (Coronado2/Cortez3/Pendek/ME 1563). It is characterized by high yield and grain quality.
Crop Breeding and Applied Biotechnology. Publicado em: 2012-06
-
11. Variabilidade e divergência genética em cruzamentos dialélicos de soja / Variability and genetic divergence in soybean diallel crosses
Estimates of genetic divergence (DG) have not been used for parental selection in breeding programs, because of the inconsistence of the results. The objective of this study was to evaluate the possibility of predicting the genetic variability (VG) of soybean populations derived from two-way crosses, using DG data from AFLP markers (Bonato et al., 2006), and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/12/2011
-
12. Mapeamento de QTLs em múltiplos caracteres e ambientes em cruzamento comercial de cana-de-açucar usando modelos mistos / Multi-trait multi-environment QTL mapping in a sugarcane commercial cross using mixed models
Dados coletados de experimentos de melhoramento geralmente contêm observações fenotípicas para vários caracteres avaliados em múltiplos ambientes. Especificamente para cana-de-açúcar, medidas repetidas são obtidas para cana-planta e uma ou mais socas. Tal cenário presta-se naturalmente ao uso de modelos mistos para modelagem de variâncias genétic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011