caa a22 4500 463171780 CHVBK 20180406164815.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s00344-007-9014-7 doi (NATIONALLICENCE)springer-10.1007/s00344-007-9014-7 Effect of Gibberellin and Auxin on Parthenocarpic Fruit Growth Induction in the cv Micro-Tom of Tomato [Elektronische Daten] [Juan Serrani, Mariano Fos, Alejandro Atarés, José García-Martínez] The effect of applied gibberellin (GA) and auxin on fruit-set and growth has been investigated in tomato (Solanum lycopersicum L.) cv Micro-Tom. It was found that to prevent competition between developing fruits only one fruit per truss should be left on the plant. Unpollinated ovaries responded to GA3 and to different auxins [indol-3-acetic acid, naphthaleneacetic acid, and 2,4-dichlorophenoxyacetic acid (2,4-D)], 2,4-D being the most efficient. GA3- and 2,4-D-induced fruits had different internal morphology, with poor locular tissue development in the case of GA, and pseudoembryos development in the case of 2,4-D. Also, GA3 produced larger cells in the internal region of the mesocarp (IM) associated with higher mean C values, whereas 2,4-D produced more cell layers in the pericarp than pollinated fruits. The smaller size of GA3- compared with 2,4-D-induced fruits was due to them having fewer cells, only partially compensated by the larger size of IM cells. Simultaneous application of GA3 and 2,4-D produced parthenocarpic fruits similar to pollinated fruits, but for the absence of seeds, suggesting that both kinds of hormones are involved in the induction of fruit development upon pollination. It is concluded that Micro-Tom constitutes a convenient model system, compared to tall cultivars, to investigate the hormonal regulation of fruit development in tomato. Springer Science+Business Media, LLC, 2007 Auxin nationallicence Fruit growth nationallicence Fruit-set nationallicence Gibberellins nationallicence Micro-Tom nationallicence Parthenocarpic growth nationallicence Tomato nationallicence Serrani Juan Instituto de Biología Molecular y Celular de Plantas (UPV-CSIC), Universidad Politécnica de Valencia, Avda de los Naranjos s/n, 46022, Valencia, Spain aut Fos Mariano Departamento de Biología Vegetal, Universidad Politécnica de Valencia, 46022, Valencia, Spain aut Atarés Alejandro Instituto de Biología Molecular y Celular de Plantas (UPV-CSIC), Universidad Politécnica de Valencia, Avda de los Naranjos s/n, 46022, Valencia, Spain aut García-Martínez José Instituto de Biología Molecular y Celular de Plantas (UPV-CSIC), Universidad Politécnica de Valencia, Avda de los Naranjos s/n, 46022, Valencia, Spain aut Journal of Plant Growth Regulation Springer-Verlag 26/3(2007-09-01), 211-221 0721-7595 26:3<211 2007 26 344 https://doi.org/10.1007/s00344-007-9014-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00344-007-9014-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Serrani Juan Instituto de Biología Molecular y Celular de Plantas (UPV-CSIC), Universidad Politécnica de Valencia, Avda de los Naranjos s/n, 46022, Valencia, Spain aut NATIONALLICENCE 700 1- Fos Mariano Departamento de Biología Vegetal, Universidad Politécnica de Valencia, 46022, Valencia, Spain aut NATIONALLICENCE 700 1- Atarés Alejandro Instituto de Biología Molecular y Celular de Plantas (UPV-CSIC), Universidad Politécnica de Valencia, Avda de los Naranjos s/n, 46022, Valencia, Spain aut NATIONALLICENCE 700 1- García-Martínez José Instituto de Biología Molecular y Celular de Plantas (UPV-CSIC), Universidad Politécnica de Valencia, Avda de los Naranjos s/n, 46022, Valencia, Spain aut NATIONALLICENCE 773 0- Journal of Plant Growth Regulation Springer-Verlag 26/3(2007-09-01), 211-221 0721-7595 26:3<211 2007 26 344 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer