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| Torres,L.E.; Bima,P.; Maich,R.; Badiali,O.J.J.; Nisi,J.. |
| The aim of this work was to obtain haploid plants of bread wheat through wide hybridization with maize. The experimental material included ten bread wheat hybrids (female parent) and one population of maize (pollen donor). Two assays were carried out in two different seasons (summer and winter). Wheat spikes were manually emasculated, each spike was pollinated twice with fresh pollen of maize and a solution of 2,4-D (100 mg l-1) was sprayed on pollinated florets and injected in the upper internode. Fifteen and 21 days after pollination caryopses were removed and surface sterilized. Embryos were cultured in tubes containing B5 medium. The ten hybrid combinations produced caryopses, but only eight of these hybrids produced embryos and, in six of them, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bread wheat; Haploid plants; Wide hybridization; Maize pollen. |
| Ano: 2010 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2010000200003 |
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| Meneguzzi,N.G.; Torres,L.E.; Galdeano,E.; Guzmán,F.A.; Nome,S.F.; Conci,L.R.. |
| In South America, plants infecting phytoplasmas from different 16Sr groups have been detected and characterized. Among them, 16Sr VII (ash yellows) phytoplasmas have been detected in herbaceous plants. In Brazil, EriWB and RPWB isolates infecting Erigeron sp. and Catharanthus roseus have been assigned to a new 16Sr VII-B subgroup. In Argentina, 16Sr VII subgroup C was created to enclose the ArAWB phytoplasma which infects alfalfa (Medicago sativa) plants. Recently, new isolates from the 16Sr VII group phytoplasmas have been detected in Artemisia annua and Conyza bonariensis showing typical witches' broom symptoms. The aim of this work was to perform a molecular characterization of these isolates in order to classify them and associate them to their closest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ash yellows phytoplasma; Geographic distribution. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2008000100002 |
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