Genetic diversity in sunflower (Helianthus annuus L.) varieties in Ethiopia
1999
Haile Kefene(Agri-Service Ethiopia, Bale (Ethiopia). Bale Regional Porject Office) | Efrem Bechere(Alemaya University of Agriculture, Dire Dawa (Ethiopia)) | Hailu Gebremariam(Debre Zeit Research Center, Debre Zeit (Ethiopia)) | Dejene Mokonen(University of California, Ireland Embassy (USA). Development K Programme)
An experiment, consisting of twenty varieties from seven geographic origins of the world was conducted at Awasa and Arsi-Negelle Research Centers in 1992/93 to study the genetic diversity of sunflower varieties in Ethiopia. Based on nine traits which were significantly (P0.01) different, the genotypes were grouped into eight clusters. Varieties in clusters II, III and VIII showed better performance for the majority of the traits of interestseed yield per plant, number of seeds per head, 1000-seed weight, harvest index, and oil yield per hectare. The clustering pattern of the materials has indicated no relationships between genetic diversity and geographic origins since genotypes from the same origin were found to be grouped into different clusters or vice versa. The Mahalanobis' distance (square D) analysis showed that distance between clusters III and V was minimum (square D
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