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Optimization of a protocol for direct organogenesis of red clover (Trifolium pratense L.) meristems for breeding purposes Biol. Res.
CARRILLO,JUAN C; OJEDA,VERÓNICA A; CAMPOS-DE QUIROZ,HUGO A; ORTEGA,FERNANDO M.
A series of experiments were carried out in order to optimize a protocol for the direct organogenesis of Chilean red clover germplasm. A range of cultivars were used to analyze the effect of explant source (crown or stem meristems of vegetative plants), culture media and plant growth regulators. Our findings showed that stem meristems were easier to obtain, presented lower levels of contamination and a better development than crown meristems. The L2 medium showed better results than B5 and MS media for the cultivars and experimental lines studied. L2 medium supplemented with 0.003 mg/l of 4-amino-3,5,6-trichloropicolinic acid and 1.0 mg/l of 6-benzylaminopurine gave consistently better results and will be applied in our breeding program to propagate,...
Tipo: Journal article Palavras-chave: In vitro culture; Meristem culture; Red clover; Trifolium pratense L.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000100005
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Meristem culture and subsequent micropropagation of Chilean strawberry (Fragaria chiloensis (L.) Duch.) Biol. Res.
Quiroz,Karla A.; Berrios,Miguel; Carrasco,Basilio; Retamales,Jorge B.; Caligari,Peter D. S.; García-Gonzáles,Rolando.
Abstract Background: Vegetative propagation of Fragaria sp. is traditionally carried out using stolons. This system of propagation, in addition to being slow, can spread plant diseases, particularly serious being viral. In vitro culture of meristems and the establishment of micropropagation protocols are important tools for solving these problems. In recent years, considerable effort has been made to develop in vitro propagation of the commercial strawberry in order to produce virus-free plants of high quality. These previous results can serve as the basis for developing in vitro-based propagation technologies in the less studied species Fragaria chiloensis. Results: In this context, we studied the cultivation of meristems and establishment of a...
Tipo: Journal article Palavras-chave: Fragaria chiloensis; Meristem culture; Plant growth regulators; Virus elimination; Plant morphogenesis.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100404
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Elimination of TSWV from Impatiens hawkerii Bull. and regeneration of virus-free plant Electron. J. Biotechnol.
Milosevic,Snezana; Subotic,Angelina; Bulajic,Aleksandra; Djekic,Ivana; Jevremovic,Sladjana; Vucurovic,Ana; Krstic,Branka.
The possibility for obtaining virus free plants from Impatiens hawkerii Bull. shoots infected with Tomato spotted wilt virus (TSWV) through meristem-tip culture was examined. TSWV presence in I. hawkerii plants was detected by DAS-ELISA and RT-PCR and identification of the virus was confirmed by sequencing one of the chosen isolate (GenBank Accesion CQ132190). Meristem-tip explants (0.3-1.5 mm) from virus-infected shoots are cultured on MS media supplemented with different concentrations of the cytokinins, CPPU or TDZ (0.01-1.0 µM), respectively. Using this system, a large number of in vitro shoots could be produced from a single explant. Also, cytokinins showed a stimulatory effect on the length, fresh and dry weights of the newly formed shoots. Plant...
Tipo: Journal article Palavras-chave: Meristem culture; New Guinea Impatiens; Tomato spotted wilt virus; Virus- free plants.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000100003
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