flower buds (8 h before flower opening; 12 p.m.) already possesses substantial SAMT enzymatic activity (approximately 22% of peak level). Maximal SAMT activity is observed inmature flower buds i.e., 4 h before petal opening (4 p.m.). After petal opening, the level of activity of SAMT starts declining, and it is almost 78% less than the peak level. SAMT activity in petals again reaches to the second peak level after 8 h of petal opening
flower buds (8 h before flower opening; 12 p.m.) already possesses substantial SAMT enzymatic activity (approximately 22% of peak level). Maximal SAMT activity is observed inmature flower buds i.e. 4 h before petal opening (4 p.m.). After petal opening, the level of activity of SAMT starts declining, and it is almost 78% less than the peak level. SAMT activity in petals again reaches to the second peak level after 8 h of petal opening
mixed tissues including needles, stems, and young male cones and female cones are collected from a mature Norway spruce (Picea abies) tree grown on the campus of the University of Tennessee, Knoxville, TN with a GPS coordinates of 35.948 and -83.942