FOLIAGE RESISTANCE TO PHYTOPHTHORA-INFESTANS (MONT) DE BARY IN THE ECUADORIAN NATIONAL COLLECTION OF SOLANUM-PHUREJA SSP PHUREJA JUZ AND BUK

Authors
CANIZARES CA FORBES GA
Citation
Ca. Canizares et Ga. Forbes, FOLIAGE RESISTANCE TO PHYTOPHTHORA-INFESTANS (MONT) DE BARY IN THE ECUADORIAN NATIONAL COLLECTION OF SOLANUM-PHUREJA SSP PHUREJA JUZ AND BUK, Potato research, 38(1), 1995, pp. 3-10
Citations number
10
Categorie Soggetti
Agriculture
Journal title
Potato research → ACNP
ISSN journal
00143065
Volume
38
Issue
1
Year of publication
1995
Pages
3 - 10
Database
ISI
SICI code
0014-3065(1995)38:1<3:FRTP(D>2.0.ZU;2-5
Abstract
The Ecuadorian national collection of S. phureja ssp. phureja Juz. and Buk. was evaluated in two parts in consecutive years in the field for resistance to Phyrophthora infestans (Mont.) de Bary. Levels of resis tance higher than that of the moderately-resistant tetraploid control were found. Preliminary studies indicate that this resistance is a res ult of minor genes. Three components of resistance: lesion diameter, l esion number and latent period were all correlated with field resistan ce as measured by the area under the disease progress curve.