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Variability of Lycopersicon hirsutum f. typicum and possible compounds involved in its resistance to Tuta absoluta
Author(s) -
Ecole C. C.,
Picanço M.,
Jham G. N.,
Guedes R. N. C.
Publication year - 1999
Publication title -
agricultural and forest entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.755
H-Index - 55
eISSN - 1461-9563
pISSN - 1461-9555
DOI - 10.1046/j.1461-9563.1999.00036.x
Subject(s) - tuta absoluta , lycopersicon , biology , lepidoptera genitalia , leaf miner , gelechiidae , horticulture , pupa , larva , botany
Summary 1 The resistance of Lycopersicon hirsutum f. typicum and L. esculentum to the leafminer Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) was investigated in two experiments. The first experiment assessed the resistance of L. hirsutum f. typicum (accession LA 1777) to T. absoluta , the second assessed the variability of the resistance among plants of this accession. 2 It was found that L. hirsutum f. typicum was resistant to the leafminer, which showed longer larval phase, higher larval mortality, smaller numbers of large mines and greater numbers of small mines/leaf than on L. esculentum . Seven plants of the accession LA 1777 showed lower number of small mines/leaf, but their results of larval mortality and length of larval and pupal phase were similar. Twenty‐two peaks were observed in total ion chromatograms of L. hirsutum f. typicum hexane extracts of leaves subjected to a gas chromatographic‐mass spectrometric analysis (CG‐MS). However, the matches obtained between the peak spectra and the MS database were too low to justify even preliminary identification of the compounds.