Grain Yield Stability of Bread Wheat Cultivars and Lines with Different Growth Habits in Temperate Agro-climate Zone of Iran

Rahimi, M.; Najafi Mirak, T.; Rashidi, V.

doi:10.22092/spij.2017.110993

Grain Yield Stability of Bread Wheat Cultivars and Lines with Different Growth Habits in Temperate Agro-climate Zone of Iran

Authors

10.22092/spij.2017.110993

Abstract

To select stable bread wheat cultivars/lines and suitable sowing date for moderate agro-climate zone of Iran, fifteen cultivars and advanced lines of wheat were studied in a split plot arrangement using a randomized complete block design with three replications and three sowing datas (Oct. 12, Nov. 01, and Nov. 21), at six locations, for two cropping seasons (2005-2007). Yield from stations in two years were analyzed to determine the best sowing date for each location. Results of combined analysis showed that the first date (Oct. 12) was suitable for all locations. Therefore, the data of the first date were analyzed based on RCBD in six locations and two years. Since the genotype × year × location interaction was significant, analysis of stability was done. The results of different stability methods were almost similar. According to the results, cultivar Shiraz with a yield average of 9.79 tha-1 was found to be the most stable cultivar followed by line M-18-14 that produced an average yield of 8.8 tha-1. Cultivars Saissons, MV-17, Zarrin, and Kavir had less stability.

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