Ikufīziyuluzhī-i Giyāhān-i Zirā̒ī (Dec 2019)
Response of Seed and Oil Yields and Yield Components of some Rapeseed (Brassica napus L.) Genotypes at Saline Areas of Tabriz Plain
Abstract
The present research was done to evaluate the response of seed and oil yields and its components of some rapeseed genotypes at saline areas of Tabriz plain and to select promising lines. The experiment was carried out at the Khosroshah Station of East Azarbaijan Agriculture and Natural Resources Research and Education Center with saline soil (EC of soil and water were 6.7 and 3.2 dS m-1 respectively), during cropping season of 2017-18. The experiment was conducted as randomized complete blocks design with 38 rapeseed genotypes and three replications. Among the genotypes under study significant differences were observed in plant height, seed yield and its components, oil percent, seed and oil yields. The results indicated that WRL-96-01 produced highest silique number per plant (123), seed number per silique (30.3), 1000 seeds weight (3.4 g), seed (3268 kg.ha-1) and oil (1526 kg.ha-1) yields respectively. Comnly used varieties in the area like Okapi and Nima produced lower seed and oil yields under this experiment conditions. Significant and positive correlations were seen among the seed yield and its components, oil yields and also between oil yield with oil percent and seed yield. These results indicate that genotyps under study produced proper seed and oil yields under saline condition. By cluster analysis with ward method, 20 genotypes with higher seed and oil yields, located in one group as promising lines. It seems that these genotypes could be used for future evaluation in saline areas of Tabriz plain and areas with similar climate.
