A research on the analysis of heterotic effects for certain agronomical characters in cross population of sunflower (Helianthus annuus L.) Aycicegi (Helianthus annuus L.) melez populasyonunda cesitli tarimsal ozellikler bakimindan heterotik etkilerin analizi uzerinde bir calisma


GÖKSOY A. T. , TÜRKEÇ A., Turan Z. M.

Turkish Journal of Agriculture and Forestry, vol.23, no.SUPPL. 1, pp.247-255, 1999 (Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: SUPPL. 1
  • Publication Date: 1999
  • Journal Name: Turkish Journal of Agriculture and Forestry
  • Journal Indexes: Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.247-255
  • Bursa Uludag University Affiliated: Yes

Abstract

This research was carried out to determine the hybrid vigour (heterosis) for certain agronomical characteristics in the new - improved hybrid combinations in sunflower, during the years 1994 - 1995 at the Experimental and Research Centre of Faculty of Agriculture, Uludag University. In the first year of this research, 7 CMS (female) lines and 4 Restorer (male) testers were crossed in all the possible combinations and 28 F1 hybrids were obtained. In the second years, 28 F1 hybrids, 11 parents and a standard variety (a commercial hybrid variety) were tested in a randomized block desing with three replications. According to the results, the hybrid vigour of F1 combinations varied between 3.5% and 43.1% for plant height, 10.0% and 64.5% for head diameter, 12.3% and 93.0% for 1000 seed weight, -7.8% and 98.4% for seed yield per head and 15.9% and 178.1% for seed yield. Hybrid combinations; 4 x 11, 7 x 8, 7 x 9, 1 x 11, 1 x 8, 7 x 10, 2 x 8 and 3 x 8 had the highest hybrid vigour in seed yield and in the other characters observed. Seed yields of these hybrids were 4.2% - 17.5% more as compared to standard variety.