Plant Genetic Improvement
Mostrando 13-24 de 92 artigos, teses e dissertações.
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13. Agronomic performance and genetic divergence between genotypes of Manihot esculenta
Abstract The morphoagronomic characterization of 12 genotypes of M. esculenta was performed during the 2013/2014 and 2014/2015 crop years. The 12 genotypes were planted in a randomized block design, with four replicates per genotype. Number of tuberous roots per plant, weight of tuberous roots, root yield, total plant weight, harvest index, plant height, hei
An. Acad. Bras. Ciênc.. Publicado em: 03/09/2018
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14. Genetic evaluation and selection in Jatropha curcas L.
Abstract J. curcas (physic nut) is one of the most promising oilseeds for biofuel production and the knowledge about genetic parameter estimates is important for its breeding. Here, we evaluated 121 families, from 48 to 60 months of age, aiming genetic evaluation and selection. The trial was set up in an 11 x 11 lattice design, with three replications and 4-
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-04
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15. Gene transfer utilizing pollen-tubes of Albuca nelsonii and Tulbaghia violacea
Abstract Developing a tissue culture-independent genetic transformation system would be an interesting technique for gene transfer in valuable medicinal and horticultural plants. Efficient gene delivery (Agrobacterium tumefaciens strain LBA 4404: harbouring PBI121 plasmid) was achieved with Km-resistant pollen grains (pollen tube technique) and were found to
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-09
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16. Overcoming crossing barriers between jatropha (Jatropha curcas L.) and castor bean (Ricinus communisL.)
Abstract A limitation in improvement of jatropha (Jatropha curcas) has been the low genetic variation among the available germplasm. An alternative to create genetic variability and incorporate desirable traits is through wide crossing. Due to reproductive barriers, wide crossing in jatropha has had limited success. In this experiment, intergeneric hybridiza
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-06
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17. Use of microsatellites for evaluation of genetic diversity in cherry tomato
ABSTRACT Much of the diversity of tomato is found in wild forms, the most important being the Solanum lycopersicum L. var. cerasiforme and S. pimpinellifolium. The objective of this research was to assess the genetic diversity of 30 introductions of cherry tomato with 36 microsatellite molecular markers. The study was conducted at the Plant Transformation Re
Bragantia. Publicado em: 15/05/2017
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18. Tissue culture efficiency of wheat species with different genomic formulas
Abstract Ancient wheats are increasingly considered as valuable resources for genes of interest which could be analyzed and introduced into cultivated varieties by genetic engineering technologies. The first stage of biotechnological crop improvement consists of successful in vitro plant regeneration. Twelve wheat germplasms with different genomic formulas (
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-12
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19. Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding
ABSTRACT Grama-tio-pedro (Paspalum oteroi Swallen) is a rare stoloniferous grass of the Plicatula group of Paspalum, well adapted to continuous grazing in areas subject to seasonal flooding in the Pantanal region, in central western Brazil. The species is a facultative apomictic (asexual reproduction by seed) tetraploid, sporadically cultivated on Pantanal f
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-08
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20. Recurrent Somatic Embryogenesis and Plantlet Regeneration in Psidium guajava L.
A simple and efficient protocol for recurrent somatic embryogenesis and plant regeneration is one of the prerequisites for genetic improvement of guava. An efficient reproducible regeneration somatic embryogenesis protocol was developed in four genotypes of Psidium guajava L. using immature zygotic embryo as starter explant. Somatic embryogenesis induction w
Braz. arch. biol. technol.. Publicado em: 06/05/2016
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21. Genetic evaluation of grain sorghum hybrids in Brazilian environments using the REML/BLUP procedure
When it comes to recommending sorghum (Sorghum bicolor) cultivars, it is essential to carry out a genetic evaluation of the agronomic traits of promising genotypes from several common environments where the crop is cultivated. This study consisted of a genetic evaluation of 52 experimental grain sorghum hybrids and eight commercial cultivars. Hybrids were ev
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-04
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22. Genetic potential of common bean parents for plant architecture improvement
In common bean (Phaseolus vulgaris L.) breeding, plant selection that associate erect plant architecture, high yield, and grains with good commercial acceptance has been the choice of breeders. Thus, this study aimed to evaluate potential parents, to obtain promising segregating populations that associate high yield, erect plant architecture and carioca grai
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-06
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23. 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
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24. Mapeamento Bayesiano de múltiplos caracteres: efeitos pleiotrópicos no estudo da herança dos componentes da produção em milho / Bayesian mapping of multiple traits: pleiotropic effects in studying the inheritance of yield components in maize
Pleiotropy has played an important role in understanding quantitative traits. However, the extensiveness of this effect in the genome and its consequences for plant improvement have not been fully elucidated. The aim of this study was to identify pleiotropic quantitative trait loci (QTL) in maize using Bayesian multiple interval mapping. Additionally, we sou
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/01/2012