The induction of male-sterility in sunflower (Helianthus annuus L.) by using gibberellic acid
1995
Samanci, B. (Akdeniz Univ. Faculty of Agriculture, Antalya (Turkey). Div. of Field Crops)
In this reviev, the use of gibberellic acid in sunflower breeding was discussed. The hand emasculation in sunflower is difficult task and after obtaining many inbred lines they need to be crossed easily to find F1 hybrids. For this reason, when 75-100 ppm GA3 in H2O is applied to sunflower heads (at star stage), 100 sterility can be obtained easily without emasculation. Today's sunflower breeders use this chemical to get sterility, before the lines converted into cytoplasmic male sterility.
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