HELIA 15

December 1991

Table of contents 

PROBLEMS WITH THE LEAF DISK IMMERSION (LDI) METHOD OF INOCULATION SUNFLOWERS WITH DOWNY MILDEW, AND SOLUTIONS TO SOME OF THEM
W.E Sackston, O. Anas..........1

PATHOGENIC RACES OF SUNFLOWER DOWNY MILDEW IN EUROPE : PRESENT STATE, PROBLEMS AND PROSPECTS
Ferenc Viranyi, S. Masirevic..........7

PROPOSED INTERNATIONALLY STANDARDIZED METHODS FOR RACE IDENTIFICATION OF Plasmopara halstedii 
Tom J. Gulya, Jerry F. Miller, Ferenc Viranyi, W.E. Sackston..........11

DETERMINATION OF BROOMRAPE (Orobanche cumana Wallr.) RACES OF SUNFLOWER IN THE THRACE REGION OF TURKEY
A. Bulbul, M. Salihoglu, C. Sari, A. Aydin.........21

HYBRIDS BETWEEN THE GENERA Helianthus and Tithonia AND THEIR STUDY
Michail Christov, Ivan Panayotov..........27

POSSIBILITIES AND PROBLEMS IN THE HYBRIDIZATION OF CULTIVATED SUNFLOWER WITH SPECIES OF THE GENUS Helianthus L.
Michail Christov.........35

ELEMENT DIVERSITY IN SUNFLOWR INBRED LINES
M. Saric, B. Krstic, Dragan Skoric..........41

EXPLORATION AND COLLECTION OF WILD SPECIES FROM THE GENUS Helianthus FROM NORTHERN MEXICO
Daniel Gomez-Sanchez, Socorro Gonzalez..........49

A FACTOR ANALYSIS OF PLANT VARIABLES RELATED TO YIELD IN SUNFLOWER UNDER WATER STRESS CONDITIONS
Jorge Elizondo-Barron..........55

GENERATING A SELECTION INDEX FOR DROUGHT TOLERANCE IN SUNFLOWER I.
WATER USE AND CONSUMPTION

Daniel Gomez-Sanchez, Oscar Marinez, Miguel Arona, Victor Castro..........65

EFFECT OF DROUGHT ON YIELD REDUCTION IN DIFFERENT SUNFLOWER HYBRIDS
Mario Baldini, Franco Cecconi, Gian Paolo Vannozzi, Antonio Benvenuti..........71

DEVELOPMENT OF DROUGHT TOLERANT SUNFLOWER FOR SEMIARID TRACTS OF INDIA : DURATION OF GENOTYPES INFLUENCE THEIR PERFORMANCE UNDER IMPOSED MOISTURE STRESS
K.V. Ravishankar, R. Uma Shaanker, H.M. Ravishankar, M. Udaya Kumar, T.G. Prasad..........77

SELECTIVE CHEMICAL WEED CONTROL IN SUNFLOWRE CROP. RESULTS OF A THREE YEAR EXPERIMENTAL PERIOD
Estilio Salera..........87

GENETIC ANALYSIS OF FATTY ACID COMPOSITION AND QUANTITATIVE YIELD IN A HIGH OLEIC SUNFLOWER POPULATION
Mario Baldini, F. Cecconi, P. Megale, Gian Paolo Vannozzi..........101

EFFECT OF SALT ON GERMINATION AND EARLY GROWTH IN SUNFLOWER
Osman Y.M., Cremonini R. Mario Baldini, Gian Paolo Vannozzi ..........107

PRESENT STATUS AND PROSPECTS OF SUNFLOWER CULTIVATION IN INDIA
K. Giriraj..........113

SUNFLOWER - A POTENTIAL CROP FOR THE UK
V.J. Church, C.J. Rawlinson..........117