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Previous issue date: 1998-03-02 / The aim of this study is to test the viability of in vitro produced mini-tuber as potato propagules
(Jeat Bintje cultivar) under field conditions. We set up a 8X2 factorial type experiment, testing
eight different growth regulators balances and the number of explants per vial (1 and 4
explants/vial). The evaluated variables were: number of mini-tubers, total weight and average
weight of mini-tubers. The number of mini-tubers produced shows no significant difference
between treatments was observed. The use of auxin concentration 1mg/l produced the best
results in total and average weight. The number of explants per vial also produced significant
difference in the mini-tuber average weight, one explants per vial treatment (1 explant /10 ml
medium) showing better results than four explants per vial (1 explant / 6.25 ml media).
Subsequently, the material was planted first in a greenhouse, and then transplanted to beds under
conditions similar to the field. Seventy percent (70%) of the planted material yielded tubers,
indicating the possibility of using mini-tubers as field propagules. Other experiments are
suggested to optimize the production of tubers in the field using mini-tubers as propagules. / Com o objetivo de estudar a viabilidade da utiliza??o de minitub?rculos, produzidos in vitro,
como prop?gulo de batata em condi??es de campo, foi implantado, preliminarmente, um
experimento do tipo fatorial 8X2, testando oito diferentes balan?os de fitorreguladores e dois
tipos de frascos com diferentes n?meros de explantes. A cultivar utilizada foi JeatBintje. Os
resultados avaliados foram: n?mero de minitub?rculos, peso total e peso m?dio de
minitub?rculos. Em rela??o ao n?mero de minitub?rculos produzidos n?o houve diferen?a
significativa entre os tratamentos. Em rela??o a peso total e a peso m?dio, o uso de auxina na
concentra??o 1mg/l apresentou os melhores resultados. Em rela??o ao frasco, a ?nica diferen?a
significativa foi para peso m?dio do minitub?rculo, sendo o tratamento com 1 explante por frasco
(1 explante/ 10 ml de meio) superior ao com 4 explantes por frasco (1 explante/ 6,25 ml de
meio). Posteriormente, o material obtido foi plantado, primeiro em casa de vegeta??o e em
seguida transplantado para canteiros em condi??es semelhantes ao campo. Setenta por cento
(70%) do material plantado em canteiro apresentou produ??o de tub?rculos, indicando a
possibilidade da utiliza??o do minitub?rculo como prop?gulo em condi??es de campo. Novos
experimentos s?o recomendados para otimizar a produ??o de tub?rculos em campo utilizando os
minitub?rculos como prop?gulos
| Identifer | oai:union.ndltd.org:IBICT/oai:localhost:jspui/1651 |
| Date | 02 March 1998 |
| Creators | Freire, Martin de Oliveira |
| Contributors | Miranda, Ricardo Motta, Carvalho, Ana Cristina P. P., Pereira, Mauricio Ballesteiro, P?rraga, Mario Sosa |
| Publisher | Universidade Federal Rural do Rio de Janeiro, Programa de P?s-Gradua??o em Fitotecnia, UFRRJ, Brasil, Instituto de Agronomia |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ |
| Rights | info:eu-repo/semantics/openAccess |
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