Akademik Veri Yönetim Sistemi
JOURNAL OF AGRICULTURAL SCIENCES-TARIM BILIMLERI DERGISI, cilt.14, sa.3, ss.230-236, 2008 (SCI-Expanded)
This study was conducted to investigate the effects of NaCl levels on germination of confectionary sunflower genotypes in 2007. Seeds of Opal, Beyaz, Suriye Nevadasi, Elazig, Kibris, 01M007, 01M008, 01M012 and 01M013 were used as material. Electrical conductivity (EC) values of NaCl solutions were 5, 10 and 20 dS/m. Distilled water (0 dS/m) served as control. Germination percentage (%), mean germination time (day), root length (cm), shoot length (cm), seedling fresh and dry weight (mg) were measured at 10 days after sowing. As a result of the research, genotypes showed different response to NaCl. Increased NaCl levels resulted in both decreasing in germination and inhibiting of seedling growth but increasing in mean germination time. The least affected genotype by NaCl concentrations was Beyaz. Germination and seedling growth were inhibited at 10 dS/m and above. It was observed that NaCl depressed seedling growth of the genotypes rather than germination because five genotypes germinated but did not have root and shoot to be measured. Moreover, it was concluded that hull ratio of the seed was an effective factor for germination regardless of NaCl levels. It was evaluated that a positive and significant correlation (r=0.692(star star)) between hull ratio and water uptake is an important clue for delaying germination.