Turkey denied permission to an Indian wheat consignment over phytosanitary concerns, prompting a ship to initiate its return journey on May 29, traders were quoted as saying by S&P Global Commodity Insights on Tuesday. The development has caused concern among Indian traders as at least 1.5 million tonne of wheat are due to be exported. Reports citing traders said that Turkey rejected shipment after Indian Rubella disease was detected in the consignment. Watch this video for more.