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Revista de Ciências Agrárias
Article . 2017 . Peer-reviewed
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Revista de Ciências Agrárias
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Revista de Ciências Agrárias
Article . 2017
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Déficit hídrico induzido por manitol para seleção de genótipos de tomateiro

Authors: Gabriel Mascarenhas Maciel; Andrea Farneze Berenguer; Ernani Clarete da Silva; Eusímio Felisbino Fraga Junior; Debora Kelli Rocha; Jaíne Priscila Rodrigues da Rocha;

Déficit hídrico induzido por manitol para seleção de genótipos de tomateiro

Abstract

A seleção de genótipos tolerantes ao déficit hídrico pode beneficiar a cultura do tomateiro favorecendo maiores produtividades. O objetivo do trabalho foi avaliar a potencialidade de solução osmótica de manitol como simulador de deficiência hídrica para seleção de genótipos de tomateiro. Adotou-se o delineamento inteiramente casualizado (DIC) com quatro repetições. Avaliou-se a melhor concentração de manitol capaz de identificar dois genótipos contrastantes (acesso selvagem LA-716, pertencente a espécie Solanum pennelliie cv. Santa Clara) tolerante e suscetível ao estresse hídrico, respectivamente. O potencial osmótico de -0,3 MPa obtido a partir da utilização de 22,29 g L-1 de manitol apresentou maior eficiência para seleção de genótipos do tomateiro. Esta concentração foi utilizada para seleção em sete genótipos segregantes F2RC1, provenientes de cruzamento interespecífico (S. pennellii versus S. lycopersicum) comparando com a testemunha resistente, acesso selvagem LA-716 e suscetível, cv. Santa Clara. O genótipo UFU80 - F2RC1#1 se destacou entre os demais, sendo superior em relação à testemunha suscetível ao déficit hídrico. O potencial osmótico de -0,3 MPa obtido por manitol foi eficiente na seleção indireta de genótipos segregantes de tomateiro tolerantes ao déficit hídrico.

Keywords

S, Agriculture (General), Agriculture, Potencial osmótico, Plântulas, S1-972, Environmental sciences, Solanum lycopersicum, GE1-350, Método indireto

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
gold