بررسی واکنش ارقام پاییزه کلزا به تاخیر در برداشت از طریق تجزیه بای‌پلات

This experiment was conducted to study the harvest time effect on yield of winter oilseed rape in Hamedan Agriculture and Natural Resources Center for two years. Six winter cultivars (Ebonite, Modena, Opera, Okapi, SLM046 and Elite) and two harvest times (Optimum harvest time and delayed harvest in 30 days after first harvest) were studied in Factorial experiment based on RCBD with three replications. Results showed that harvest time had a significant effect on seed yield. There were significant differences between Modena and Ebonite cultivars that produced highest and lowest yield, respectively. Harvest time × cultivar interaction for yield was not significant and all cultivars showed similar trend. Genotypes were ranked on the basis of attribute selection indices and relationships among the indices have been showed by multivariate biplot display method. The results of the genotypes evaluation with respect to delayed harvest tolerance using different indices showed that Modena and Okapi were tolerant to seed losses and performed well under two different harvest conditions.