بررﺳﻲ ﺗﺎﺛﻴﺮ ﺗﺎرﻳﺦ ﻛﺎﺷﺖ ﺑﺮ روی ﺑﺮﺧﻲ اﺟﺰاء ﻋﻤﻠﻜﺮد ﭘﻨﺞ ژﻧﻮﺗﻴﭗ ﻣﺨﺘﻠﻒ ﻳﻮﻻف زراﻋﻲ(.Avena sativa L) در اﻫﻮاز

To investingate the effect of sowing date on yield components of five genotypes of cultivated oat (Avena sativa L.) an experiment was conducted in agricultural research farm of shahid chamran ahvaz university in (2013-2014).This experimental design is a factorial randomized complete block design with three replications was studied. Treatments included in the first factor was planting date (20 October, 5 November and 25 November) and the second factor consisted of oats genotypes cultivated (V1, V2, V3, V4 and V5), respectively. Traits of study were plant height and grain weight. results showed that the first planting date had the greatest impact on the characteristics. Among genotypes, the highest 1000 grain weight and plant height were obtained in the V2 and V3 genotype, respectively. The main reason for the improvement of 1000 grain weight could be attributed to better growth, better use of transferable carbon stocks as well as during the course of further growth, Providing appropriate planting date increased germination to flowering time is if combined with appropriate planting density can lead to an increase in plant height, seed weight while increasing the plant.