SALICYLIC ACID INHIBITION OF GERMINATION, ETHYLENE PRODUCTION AND RESPIRATION IN COCKLEBUR SEEDS
نویسندگان
doi
چکیده
Salicylic acid (SA) inhibited germination of cocklebur (Xanthium pennsylvanicum Wlr), lower seeds, which are completely after-ripened and nondormant. SA also inhibited ethylene production during a pre-germination period of the seeds. Exogenous ethylene overcame the inhibtion of the seed germination by SA. Moreover, SA reduced respiration in pre-germinating whole seeds as well as excised axial tissues.S A was suggested to inhibit more severely cyanide-sensitive respiration than cyanideresistant respiration. The inhibition of both ethylene production and respiration by S A was thought to be the cause of prevention of cocklebur seed germination . The mechanism of the action of SA is discussed in the inhibition of cockelbur seed germination