Thrace University, Tekirdag Agricultural Faculty, Field Crops Department, 59030 Tekirdag, Turkey
ÖNEMLI, FADUL, 2003. Studies on adaptation of some peanut cultivars and breeding early maturing cultivars by progeny controlled single plant selection method in Thrace region. Bulg. J. Agric. Sci., 9: 185–190
The conducted adaptation studies in 1991 in the field crops department area of Tekirdag¡ Agricultural Faculty of Thrace University; showed that it is hopeful to find a place in Thrace plant rotation for peanut. However, some problems have to be removed for every market types. Although the cultivars of Virginia and Runner had the highest yields, they gave the lowest earliness index values. Valencia and Spanish cultivars had the highest earliness values but they gave the lowest fruit yields per hectare.
In line with the results of adaptation, the improvement studies of early maturing and yielding peanut cultivars were started in 1992. The experiments were conducted in 1992 and 1993. These studies strongthened the results of adaptation studies. The selection criteria for three market types were determined based on breeding objects, correlation and path analysis. In this region, important selection criteria were seeds number per fruit, harvest index; fruits number per plant, single fruit weight, total plant weight, harvest index, 100 seed weight; total plant weight, harvest index, plant height, the ratio forming fruit of pegs for Virginia, Valencia, Spanish market types; respectively.