Akademik Veri Yönetim Sistemi
V. BALKAN AGRICULTURE CONGRESS, 20-23 SEPTEMBER, EDİRNE, TÜRKİYE, Edirne, Türkiye, 20 - 23 Eylül 2023, ss.16-19
In order to analyze general and specific combining
abilities and the genetic implications regarding yield and yield related
components (plant height, head diameter, number of leaf, number of branching, stem
thickness, 1000-seed weight and seed yield/plant) in oil seed sunflower (Helianthus annuus L.), 4 CMS lines and 5
restorer lines (tester) were crossed in a line × tester programme. The field
experiments were conducted in a randomized complete block design with three
replications in the Agricultural Research Station, Bursa Uludağ University located
southern Marmara region of Turkey in 2019 and 2020 growing seasons. General and
specific combining ability, broad and narrow sense of heritability of parents
and crosses were calculated with line X tester method.
The significant differences among the
parents, crosses and parents versus crosses mainly observed within examined
characters. Combining
abilities of the parents gave positive and/or significant results for all
characters examined. Two-year results revealed that the male parent RHA-7 and the female parent CMS-3 considered as
good general combiners for seed yield per head and 1000 seed weight. Specific
combining abilities of hybrids changed differently within two years. Hybrid combinations, 4x9 (head diameter), 2X7 (number
of leaf), 1X5 and 4X9 (1000 seed weight), 2X9 (stem thickness), 2x5 and 3X7
(seed yield/head) released positive and/or significant specific combining
ability values, were promising hybrids.
The fact that the heritability in the broad sense is higher than the degree of heritability in the narrow sense in both years shows that the genetic factors as well as the environment have a great effect on the all of the examined characters. Therefore, it is appropriate to start the selection in the F3 generation. Additive gene effects for plant height and seed yield per plant and non-additive gene effects for head diameter, number of leaf, number of branching and 1000 seed weight were obtained for the genetic materials studied.