Evaluation of grain yield and agronomic characters of new Sunflower single cross hybrids in rainfed conditionsý.
2011
Naraki, Hushang
To study seed yield and some agronomic traits in 24 Sunflower single cross hybrids received from SPII (Karaj), an experiment was conducted based on RCBD with 3 replications in Gachsaran agricultural rain fed research station in 2009 - 2010. Each genotype was planted in 4 rows with 5 meters length and 50 cm row spacing. During growing season data were collected from some agronomical morphrpho-physiological traits. The ANOVA was done for agronomic traits and the Least Significant Difference (LSD) method for comparing treatment means with checks (Azargol and Favourite). Analysis of variance showed that sunflower genotypes were significantly differing for days to start of flowering and maturity, steam diameter, leaf number, plant height (PH), seed weight, and seed yield. Mean and range of days to maturity in genotypes was 147.6 and 140 - 156 days, respectively. Variation range was for stem diameter 11.2 (genotype 4) 18.8 (genotype 17) and kernel thousand weight 29.5 (genotype 3) 42.9 (genotype 15). The highest seed yield belonged to genotypes No. 9, 19, 7 and 18 (2121.2, 1943.9, 1925.1 and 1878.1 Kg/ha, respectively) and the least related to genotype 20 (1197.5 Kg/ha).
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