| Autor: |
Godzina, Monika, Kielkiewicz, Malgorzata, Szymczykiewicz, Katarzyna |
| Zdroj: |
Journal of Horticultural Research; January 2010, Vol. 72 Issue: 1 p15-24, 10p |
| Abstrakt: |
Mi-1.2gene contributes to the resistance of tomato plants against some species of herbivores (i.e. nematodes, aphids) that are sap-feeders. In this study, two genotypes of tomato (Solanum lycopersicumL. syn. Lycopersicon esculentumMill.) plants with dominant (Motelle cv) and recessive (Moneymaker cv) Mi-1.2alleles were evaluated as a host-plant to the two-spotted spider mite (Tetranychus urticaeKoch, Acari: Tetranychidae). Plants were grown under glasshouse conditions. The effect of tomato genotypes on T. urticaebionomy was estimated on cut leaflets in controlled photoperiod, temperature and humidity (L/D=16/8 h; D/N temp.=23/20°C; RH=70%). Results of laboratory evaluation showed that both the bionomy and population parameters of T. urticaereached a very similar or even higher value on plants with dominant Mi-1.2allele than on plants with recessive one. A relatively high value of T. urticaeparameters on plants resistant to root knot nematodes indicates that the mite has potential to develop rapidly. This allows the mite population to reach the density causing marked damage to plant in a short time. It is concluded that the presence of Mi-1.2gene product in tomato plants does not significantly affect the reproductive potential of T. urticae.Therefore, Mi-1.2gene cannot be a satisfying source of plant resistance to this mite-herbivore generalist. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
