HELIA 14

July 1991

EVALUATION OF 26 SUNFLOWER CULTIVARS AT ISLAMABAD
Masood A. Rana, M. Ayub Khan, M. Yousuf, Saddiq M. Mirza..........19

RELATIVE PERFORMANCE OF SYN1 AND SYN2 POPULATIONS OF SUNFLOWER GERMPLASM MATERIALS 
S.G.Ado, A.A.Zaria, B.Tanimu, Ahamadu Bello..........37

INTERSPECIFIC HYBRIDIZATION IN SUNFLOWER
Gremonini R., Palla S, Vannozzi Gian Paolo..........43

OROBANCHE CERNUA SEED DISPERSAL THROUGH SUNFLOWER ACHENES 
Mercedes Castejon, F. Romero-Munoz, L. Garcia-Torres..........51

LEAF EXPANSION AND PHOTOSYNTHESIS DURING GROWTH AND DEVELOPMENT OF NS SUNFLOWER HYBRIDS AND INBRED LINES 
D. Pankovic, Z. Sakac, M. Plesnicar, T. Cupina, Dragan Skoric..........55

EFFECTS OF THE SOWING DATE ON SUNFLOWER SEED-SET AND OIL
Alfredo S. Ortegon Morales, Artemio Escobedo Mendoza, Evangelina Sevilla Paniagua..........101

A STUDY ON THE PHYSIOLOGICAL LIFE SPAN OF SUNFLOWER LEAF
Duan Weisheng, Liu Lanxiang, Li Zhiying..........113

EMBRYOGENESIS IN MIRCROSPORE CULTURE OF SUNFLOWER (Helianthus annuus L.)
Aynur Gürel, S. Kontowski, K. Nichterlein, Wolfgang Friedt..........123