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ROLE OF GA₃ AND KNO₃ IN IMPROVING THE FREQUENCY OF SEED GERMINATION IN PLANTAGO LANCEOLATA L.

ERCUMENT OSMAN SARIHAN, ARIF IPEK, KHALID MAHMOOD KHAWAR*, MEHMET ATAK AND BILAL GURBUZ

Abstract: Seeds of Plantago lanceolata L., obtained from crops of 1992- 2001 were treated with 100, 200 and 400 ppm of GA₃ and 1000, 2000 and 4000 ppm of KNO₃ by incubating them at 20 oC under 16 h light photoperiod, along with control. Highest germination of 97% was obtained from the seed of the crop of 2001, which decreased to 78.8% in the seeds of the crop of 1992 in untreated control. It was found that age plays a significant role in the decline of frequency of seed germination, which was effectively improved with the use of GA₃ and KNO₃ .

Department of Field Crops, Faculty of Agriculture, University of Ankara, 06110, Diskapi, Ankara, Turkey.
Institute of Biotechnology, Department of Field Crops, Faculty of Agriculture, University of Ankara, Diskapi, Ankara, Turkey.
Corresponding Author: Tel: +90-312-5961286, +90 312 5961467-1467, Fax: +90-312-3179815, kmkhawar@gmail.com, gurbuz@agri.ankara.edu.tr