ATPASE ACTIVITY IN THE ROOT ZONE OF GALAPAGOS WILD TOMATO SPECIES, LYCOPERSICON CHEESMANII AND L. CHEESMANII F. MINOR

ATPase activity in the root zone of Galapagos wild tomato species, L. cheesmanii and L. cheesmanii f. minor, was investigated histochemically by comparisons to that of a domestic tomato cultivar L. esculentum cv.
Original Fast and hybrids.
The salt-tolerant L. cheesmanii f. minor accessions, e.g., LA483 and LA530, had detectable ATPase activity in the root zone.
In these accessions, ATPase activity was strongly detected on the root hairs.
For the salt-sensitive L. cheesmanii accessions and ‘Original Fast,’ ATPase activity was not detected.
For inter-specific hybrids between ‘Original Fast’ (seed parent) and salt-tolerant L. cheesmanii f. minor LA483 or LA530 (pollen parent), ATPase activity was detected in the root zone.
This result suggests that the root zone may play a significant role on tomato salt tolerance.

XXVII International Horticultural Congress – IHC2006: II International Symposium on Plant Genetic Resources of Horticultural Crops

T. Tabuchi, J. Kakuta, N. Watanabe, A. Terashima, K. Fukazawa

enzyme histochemistry, Galapagos tomato, germplasm resources, salt tolerance, Lycopersicon esculentum

https://doi.org/10.17660/ActaHortic.2007.760.37