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Registros recuperados: 24
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BRS Ipyporã ("belo começo" em guarani): híbrido de Brachiaria da Embrapa. Infoteca-e
VALLE, C. B. do; EUCLIDES, V. P. B.; MONTAGNER, D. B.; VALERIO, J. R.; MENDES-BONATTO, A. B.; VERZIGNASSI, J. R.; TORRES, F. Z. V.; MACEDO, M. C. M.; FERNANDES, C. D.; BARRIOS, S. C. L.; DIAS FILHO, M. B.; MACHADO, L. A. Z.; ZIMMER, A. H..
O híbrido BRS RB331 Ipyporã é resultado de um cruzamento entre B. ruziziensis e B. brizantha realizado em 1992, na Embrapa Gado de Corte e liberado pela Embrapa em 2017 em parceria com a UNIPASTO, após 13 anos intermitentes de avaliações. É uma planta de porte baixo, prostrado, com colmos delgados de bainhas muito pilosas e folhas pilosas em ambas as faces. As espiguetas são uniseriadas e com pouca ou nenhuma pilosidade. A BRS Ipyporã entra no mercado para suprir a demanda por uma cultivar de Brachiaria de boa produtividade e manejo relativamente fácil, como a cv. Marandu, porém com elevado grau de resistência à cigarrinha da cana do gênero Mahanarva, além de apresentar resistência às cigarrinhas típicas de pastagem dos gêneros Deois e Notozulia,...
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Desempenho animal; Híbrido interespecífico.; Brachiaria brizantha; Cigarrinha; Valor nutritivo; Semente; Apomixia.; Urochloa brizantha; Cercopidae; Apomixis; Animal performance; Interspecific hybridization; Seeds; Nutritive value.
Ano: 2017 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1069732
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Comparative effects of root-knot nematode Meloidogyne incognita on yield performance of seven Asian rice and 13 Oryza sativa/O. glaberrima interspecific progenies International Rice Research Institute
Afolami, S. O.; Orisajo, S. B.; Fademi, O. A..
p.21-24
Palavras-chave: Nematoda; Meloidogyne incognita; Varietal resistance; Interspecific hybridization; Progeny; Yields.
Ano: 2003 URL: http://hdl.handle.net/123456789/1316
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Complete asynapsis resulting in 2n pollen formation in Paspalum jesuiticum Parodi (Poaceae). Repositório Alice
BERNARDO FILHO, R. A.; SANTOS, A. C. C.; SOUZA, F. H. D. de; VALLS, J. F. M.; PAGLIARINI, M. S..
bitstream/item/180009/1/gmr2770.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Poaceae; Hexaploidy; Interspecific hybridization; Meiosis; Polyploidy.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/994921
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Complete asynapsis resulting in 2n pollen formation in Paspalum jesuiticum Parodi (Poaceae). Repositório Alice
BERNARDO FILHO, R. A.; SANTOS, A. C. C.; SOUZA, F. H. D. de; VALLS, J. F. M.; PAGLIARINI, M. S..
2014
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Meiosis; Poaceae; Interspecific hybridization; Hexaploidy; Polyploidy.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/983777
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Comportamento de cultivares e linhagens de abobora (C. mochata Duch) e híbridos interespecíficos (C. maxima x C. mochata) em Belém, na Amazônia Oriental. Repositório Alice
CHENG, S. S.; CARVALHO, J. E. U. de; SOUZA, V. A. B. de; OLIVEIRA, W. M. S. de..
1986
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Abobora; Variedade; Produtividade; Hibridação interespecífico; Pumpkins; Varieties; Yields; Interspecific hybridization.
Ano: 1986 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394638
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Cucumber breeding and genomics: Potential from research with Cucumis hystrix National Institute of Agronomic Research
Jin-Feng Chen; Long-Zheng Chen; Yong Zhuang; You-Gen Chen; Xiao-Hui Zhou.
Cucumis hystrix Chakr. (2n=2x=24) is a wild Cucumis species found in Yunnan (China) having cross compatibility with cultivated cucumber (C. sativus L., 2n=2x=14). Since the first interspecific hybridization successfully made in 1995 and development of the synthetic allotetraploid species (C. X hytivus Chen and Kirkbride, 2n=4x=38) in 2000, experiments with C. hystrix and the progenies derived from this interspecific cross were carried out for the potentials in cucumber genetics and cultivar improvements. Some important characters or traits found in C. hystrix were introduced, and the novel germplasm developed from this cross and some results from genetic and epigenetic studies were summarized for the first time in this review. Future objectives are...
Tipo: Conference Paper Palavras-chave: Cucumis; Cucumber; Interspecific hybridization; Introgression; Wild species; Germplasm; Disease resistance; Photosynthesis; Genome; DNA methylation; Molecular markers.
Ano: 2008 URL: http://hdl.handle.net/2174/200
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Cytogenetic evidence for genome elimination during microsporogenesis in interspecific hybrid between Brachiaria ruziziensis and B. brizantha (Poaceae) Genet. Mol. Biol.
Mendes-Bonato,Andréa Beatriz; Risso-Pascotto,Claudicéia; Pagliarini,Maria Suely; Valle,Cacilda Borges do.
Microsporogenesis was analyzed in an interspecific hybrid between an artificially tetraploidized sexual accession of Brachiaria ruziziensis (R genome) and a natural apomictic tetraploid accession of B. brizantha (B genome). Chromosomes associated predominantly as bivalents. From this phase to the end of meiosis, chromosomes presented irregular segregation and abnormal arrangement in the metaphase plate. During metaphase I, in 27.8% of meiocytes, bivalents were distributed in two metaphase plates. In anaphase I, two distinct and typical bipolar spindles were formed. In 29.7% of pollen mother cells, one genome did not divide synchronically, with chromosomes lagging behind or not segregating at all. The second division was very irregular, resulting in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachiaria; Forage grass; Interspecific hybridization; Meiotic rhythm; Microsporogenesis.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000400021
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Desenvolvimento, validação, transferibilidade e aplicação de marcadores microssatélites em estudos genéticos das passifloras. Repositório Alice
ARAYA, S..
O gênero Passiflora compreende centenas de espécies silvestres e cultivadas de maracujá que possuem diversos usos na alimentação, na indústria, na medicina e também no paisagismo. Esforços para desenvolver ferramentas de análises genéticas em Passiflora edulis Sims, a espécie mais importante do gênero Passiflora, ainda são incipientes. Nessa pesquisa, é descrito o uso do Sequenciamento de Nova Geração para a montagem parcial do genoma de P. edulis com o intuito de desenvolver centenas de novos marcadores microssatélites. Um total de 14,11 Gpb de reads de sequências paired-end de Illumina foram analisadas para detectar sequências simples repetidas no genoma de maracujá. Uma amostra de 1.300 contigs que continham sequencias de microssatélites foram...
Tipo: Tese/dissertação (ALICE) Palavras-chave: Microssatélites; Maracujá; Passiflora edulis; Marcador genético; Cruzamento vegetal; Intercruzamento; Passion fruits; Passiflora edulis; Genetic markers; Microsatellite repeats; Mating systems; Interspecific hybridization.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1069454
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Development and characterization of Cucumis sativus-hystrix introgression lines exhibiting resistance to downy mildew National Institute of Agronomic Research
Zhou, X.-H.; Wan, H.-J.; Qian, C.-T.; Chen, J.-F..
Stable C. sativus-hystrix introgression lines with fourteen chromosomes, derived from the interspecific hybridization between a wild relative of cultivated cucumber C. hystrix (2n=2x=24, HH) and a Chinese cucumber 'Beijingjietou' (C. sativus L., 2n=2x=14, CC) were characterized using morphological, cytological, and SSR analysis. In morphology, those introgression lines were characterized to have small-sized leaf, short fruit, and multi-branching habit which were closer to the wild parent (C. hystrix), and to have a fertility as high as that of cultivated cucumber. Cytological observation showed that sister chromatids in at least one pair of somatic chromosomes were delayed obviously in separation at late metaphase. At diakinesis, 0.2 tetravalents, 0.05...
Tipo: Poster Palavras-chave: Cucumber; Cucurbits; Interspecific hybridization; SSR; Pseudoperonospora cubensis.
Ano: 2008 URL: http://hdl.handle.net/2174/230
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Exploitation of wild relatives of pigeonpea and chickpea for resistance to Helicoverpa armigera Open Agri
Mallikarjuna, N.,( Nalini Mallikarjuna ).
Palavras-chave: Pigeonpeas; Chickpeas; Hybridization; Genes; Gene pools; Interspecific hybridization; Hybrids; Genomes; Gene transfer; Polyploidy.
Ano: 2007 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3283
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Induction of Androgenesis as a Consequence of Wide Crossing in Chickpea Open Agri
Mallikarjuna, N.,( Nalini Mallikarjuna ).
Palavras-chave: Asexual reproduction; Chromosomes; Cytokinins; Hybrids; Chickpeas; Parthenogenesis; Cell culture; Organ culture; Interspecific hybridization; Organic compounds.
Ano: 2005 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3252
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Intra- and intergenomic chromosomal pairing in artificially polyploidized elephant grass and pearl millet hybrids PAB
Santos,Fernanda Motta da Costa; Torres,Giovana Augusta; Techio,Vânia Helena; Pereira,Antônio Vander; Davide,Lisete Chamma.
Abstract: The objective of this work was to evaluate, by genomic in situ hybridization (GISH), pairing configurations as potential indicators of recombination between chromosomes of different parental genomes, in two interspecific hybrids (elephant grass x pearl millet) artificially polyploidized. Anthers from young flower buds were used in the chromosomal preparations. The genomic probe was prepared with pearl millet DNA and labeled with biotin-16-dUTP by the nick translation reaction. Blocking DNA was prepared with genomic elephant grass DNA. The homoeologous intergenomic pairing, observed in the two hybrids, indicates the possibility of recombination between chromosomes of the parental genomes.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pennisetum glaucum; Pennisetum purpureum; In situ hybridization; Intergenomic pairing; Interspecific hybridization.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000900814
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Introgression of cultivated sunflower in exotic Helianthus petiolaris populations JBAG
Gutiérrez,A; Cantamutto,M; Poverene,M.
Cultivated sunflower Helianthus annuus and the wild exotic H. petiolaris are sympatric species in an extensive region of central Argentina. Both species are sexually compatible, they overlap their flowering time and share pollinators in the region. Although there are important barriers to introgression between them, interspecific hybrids are occasionally found in contact zones. We present evidences of crop introgression in H. petiolaris populations under natural conditions and controlled and semi-controlled crosses in the experimental field using morphological traits. If crop genes persist in subsequent generations after hybridization, it could then be possible to find crop morphological traits and molecular markers in hybrid offsprings. Plants of H....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crop-wild; Intermediate morphology; Interspecific hybridization; RAPD.
Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332012000100003
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Methods of isolation of Cucumis sativus and C. melo pollen grains and their utilization in in vitro pollination National Institute of Agronomic Research
Skálová, D.; Navrátilová, B.; Lebeda, A..
Optimizing manipulation with pollen grains is necessary for successful in vitro pollination. This pollination can be used for overcoming crossing barriers in interspecific hybridization in the genus Cucumis. Pollen grains from Cucumis sativus and C. melo were isolated by various methods. Different techniques of centrifugation were compared with direct isolation of pollen grains from anthers. The viability of pollen grains was evaluated and their ability to form pollen tubes was tested. Three isolation media (NLN, YST and VB) and two cultivation media (YS and CP) were used. Then pollen grains were cultivated with ovules of C. sativus and the level of regeneration was observed. The growing and green ovules were considered as the lowest level and the highest...
Tipo: Poster Palavras-chave: Cucumis; Centrifugation; Interspecific hybridization; Pollinisation; Regeneration.
Ano: 2008 URL: http://hdl.handle.net/2174/232
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Microsporogenesis in Paspalum conspersum Schrad. (Virgata group) with different ploidy levels. Repositório Alice
JANKE, L.; SOUZA, F. H. D. de; VALLS, J. F. M.; PAGLIARINI, M. S..
2013
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Poaceae; Interspecific hybridization; Pentaploidy; 2n gamete; Meiosis; Paspalum.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1040052
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Obtenção de híbridos em pimenta-do-reino e avaliação em relação a fusariose. Repositório Alice
POLTRONIERI, M. C.; ALBUQUERQUE, F. C. de; POLTRONIERI, L. S..
1996
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Pimenta-do-reino; Melhoramento; Resistência a doença; Cruzamento intra-específico; Piper nigrum; Plant breeding; Disease resistance; Interspecific hybridization.
Ano: 1996 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394875
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Progress in interspecific hybridization between Cicer arietinum and wild species C. bijugum Open Agri
Mallikarjuna, N.,( Nalini Mallikarjuna ).
Palavras-chave: Chickpeas; Hybrids; Cytokinins; Self pollination; Cross pollination; Crossing over; Hybridization; Interspecific hybridization; Heterocyclic compounds; DNA.
Ano: 2007 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3343
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Quantificação da variabilidade genética entre matrizes de Coffea canephora das variedades botânicas Conilon e Robusta. Infoteca-e
ROCHA, R. B.; RAMALHO, A. R.; TEIXEIRA, A. L.; VIEIRA JUNIOR, J. R.; ESPINDULA, M. C.; Marcos Santana Moraes.
O objetivo desse trabalho foi quantificar a divergência genética entre 130 acessos clonais de Coffea canephora das variedades botânicas Conilon, Robusta e híbridos interespecíficos.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Café Conilon; Híbrido interespecífico; Embrapa Rondônia; Ouro Preto d'Oeste (RO); Rondônia; Amazônia Ocidental; Western Amazon; Coffea Canephora; Café Robusta; Variação Genética; Campo Experimental; Genetic variation; Interspecific hybridization.
Ano: 2016 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1125208
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ศักยภาพกล้วยไม้สกุลนางอั้วในเชิงการค้า Thai Agricultural
Phruek Kongsawad; Supas Nusawad; Supapong Sachit; Jongwattana Pumherun.
The ground orchids ‘Pecteilis sp.’ have great potentials for development to commercial scale. This orchid group rest in dry season and flowering in rainy season, less taking care; so, it can be developed to pot plant similar to tulip. This research aims to develop new Thai orchid product for commercial scale by research and development. This work was done at Sisaket Horticulture Research Center during 2006-2011. It was collection of, the orchids ‘Pecteilis sp.’ from natural in north-east Thailand and market, 810 orchid plants included 500 plants of Pecteilis sagarikii and 310 plants of Pecteilis susannae. Moreover, four good parent lines were selected, and a pair of intergeneric hybrid between Pcteilis x Habenaria was bred for commercial scale.
Tipo: PhysicalObject Palavras-chave: Orchid; Orchidaceae; Pcteilis; Hybridization; Intergeneric; Plant breeding; Selection interspecific; Interspecific hybridization; Intergeneric hybridization; Plant morphology; Production potential; กล้วยไม้ดินสกุลนางอั้ว; พันธุ์การค้า; การรวบรวมพันธุ์; การปรับปรุงพันธุ์; การคัดเลือก; การผสมข้ามสกุล; การผสมข้ามชนิด; ลักษณะทางสัณฐานวิทยา; ศักยภาพการผลิต.
Ano: 2013 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5783
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栽培稻 (Oryza sativa) 與野生稻 (O. nivara) 種間雜種及回交後裔族群產量性狀之變異 Taiwan Agricultural Research Institute
李長沛; 郭益全; 曾富生; Charng-Pei Li;Yih-Chuan Kuo;Fu-Sheng Thseng.
[[abstract]]本研究以臺梗1號 (TK1) 及臺農67號 (TNG67) 兩個稉稻品種為輪迴親本與由國際稻米研究所引進之野生稻種O. nivara (Acc. 104705) 雜交及回交,探討所得各F1、F2、BC1F1、BC1F2、BC2F1、BC2F2、BC3F1、BC3F2族群稔實率、穗數、每穗粒數及千粒重等性狀的變異,所得結果摘要如下:TNG67、TK1與O. nivara雜交F1各性狀之表現,在稔實率偏向野生稻親本分別為51、58 %,顯示此種間雜交之生殖障礙不大;在穗數及千粒重呈超越高親本,每穗粒數則偏向野生稻。兩組合F2族群的四個性狀變異性均相當高,且呈超親分離的現象,族群中大多數個體分佈偏向於野生稻親本或低於野生稻親本,不利於產量性狀之選拔。兩組合自BC1F1開始選拔株型接近栽培稻者進行回交,該單株並行宿根採收種子以繁殖F2族群。由各回交F1及F2的表現得知,優良之特性在各回交世代均能持續表現,甚至超越輪迴親本。例如TK1 × O. nivara組合的BC2F2及BC3F2族群的平均稔實率及千粒重已超越輪迴親本,族群也具有相當高的同質性,有利於優良性狀之固定。由此說明野生稻O. nivara對栽培種之稔實率、穗數、每穗粒數及千粒重等產量性狀的改進具有潛力。
Palavras-chave: 水稻 回交 種間雜交 產量性狀 Recurrent backcross; Interspecific hybridization; Oryza sativa; O. nivara. Yield components [[classification]]6.
Ano: 1999
Registros recuperados: 24
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