EVALUATING OF WILD HELIANTUS SPECIES OF SUNFLOWER AND INTERSPECIFIC HYBRIDIZATION FOR RESISTANCE TO BROOMRAPE (OROBANCHE CUMANA WALLR.)

Authors

  • F. G. ANTON
  • M. PACUREANU JOITA
  • F. SAUCA
  • L. RISNOVEANU

Abstract

Broomrape become in the last years very dangerous for sunflower crop in Romania and new  races  apears in evry year. Orobanche cumana Wallr (broomrape) is present in more than half of areas cultivated with sunflower in our country.Broomrape causes important louses to sunflower seed yield. The better method to control this parasite is genetic resistance. Breeding for resistance of broomrape can be done by transfering genes from wild species of Helianthus. By testing different sunflower genotypes, resistant to the most virulent races of the parasite, in artificial condition from different infested areas, year by year is study of the relationship between the parasite and the host plant. Resistant genotypes at broomrape in one year lose resistance next year and become tolerant.

Published

2017-12-27