HELIA 13

October 1990

Table of contents

EFFECT OF ELEMENTS FROM SCANDIUM AND LANTHANID GROUPS ON GROWTH AND MORPHOLOGICAL CHARACTERS OF YOUNG SUNFLOWER PLANTS
Bai Bao-Zhang, R. Kastori, N. Petrovic..........1

PERFORMANCE OF A NEW SYNTHETIC SUNFLOWER STOCK DEVELOPED FROM LOCAL AND INTRODUCED GERMPLASM AND FURTHER IMPROVEMENT VIA POPULATION IMPROVEMENT METHOD
R. Shabana..........11

EFFICIENT INTERSPECIFIC HYBRIDIZATION VIA EMBRYO RESCUES FOR APPLICATION IN SUNFLOWER BREEDING
Regina Kräuter, Wolfgang Friedt..........17

WILD SUNFLOWER GERMPLASM COLLECTED FROM THE GREAT LAKES REGION OF THE UNITED STATES
Gerald Seiler, Jeffrey S. Pomeroy, Branislav Dozet, Vera Gavrilova..........21

EFFECT OF MATURITY STAGES AND DESICCANT APPLICATION ON YIELD AND OIL QUALITY OF SUNFLOWER (Helianthus annuus L.)
Masood A. Rana, A. Chaudhry Ozair, M. Ayub Khan, Shafiullah..........29

MORPHOGENETIC ABILITY OF TISSUE AND PROTOPLAST CULTURE OF WILD DIPLOIDS SPECIES OF SUNFLOWER (Helianthus L.)
N.E. Bohorova, M.S. Punia, C. Iossiftcheva..........35

RESULTS OF INHERITANCE EVALUATION OF AGRONOMICALLY IMPORTANT TRAITS IN SUNFLOWER
A. Kovacik, V. Skaloud..........41

POLLEN FERTILITY IN SOME Helianthus L. SPECIES AND THEIR F1 HYBRIDS WITH THE CULTIVATED SUNFLOWER 
Jovanka Atlagic..........47

A NEW SOURCE OF CYTOPLASMIC MALE STERILITY IN SUNFLOWER ORIGINATING FROM Helianthus argophyllus
Michail Christov..........55

EFFECT OF ARTIFICIAL DEFOLIATION ON SUNFLOWER (Helianthus annuus L.)
Paola Belloni, Diletta Piccotino, Gian Paolo Vannozzi..........63

SUNFLOWER YIELD CHARACTERISTICS AS AFFECTED BY WEED CONTROL, PLANT DENSITY, NITROGEN LEVEL AND SOWING TIME
Gian Paolo Vannozzi, E. Salera, Mario Baldini..........73

THE SUSCEPTIBILITY OF DIFFERENT SUNFLOWER HYBRIDS TO Diaporthe (phomopsis) Helianthi ESTIMATED ON THE BASIS OF INOCULATIONS
T. Csengeri..........87

EVALUATION OF SUNFLOWER HYBRIDS FOR DISEASE SUSCEPTIBILITY IN 1989
Leranthne Szilagyi J, Y. Voros..........91

DIAPORTHE (Phomopsis) SP., A NEW PATHOGEN OF COCKLEBUR (Xanthium italicum Moretti) AND OF SUNFLOWER (Helianthus annuus L.)
Jean-Bernard Carriere, Marija Petrov..........93 

EFFECTS OF WINTER SOWING ON TWO SUNFLOWER GENOTYPES IN THE REGION OF SAISS-FES
M. Boujghagh..........107

HONEYCOMB MASS SELECTION EFFICIENCY FOR SUNFLOWER YIELD UNDER DIFFERENT SPACING CONDITIONS 
F.P. Xanthopoulos..........121

Helianthus GENUS WILD SPECIES INTERSPECIFIC HYBRIDS : MORPHOLOGICAL AND TECHNOLOGICAL CHARACTERS
Gian Paolo Vannozzi, P. Megale, E. Salera..........127

GERMINATION ABILITY OF ACHENES OF Helianthus GENUS WILD SPECIES INTERSPECIFIC HYBRIDS
Gian Paolo Vannozzi, P. Megale, E. Salera..........135

A REPORT ON THE WORKING MEETING OF FAO SUBNETWORKS ON GENETICS, BREEDING AND EXPERIMENTATION OF SUNFLOWER HYBRIDS IN ISTANBUL, TURKEY, ON JULY 25-28, 1989..........143