EFFECT OF STORAGE METHODS AND SEED SIZE IN SEEDLING VIGOUR OF SAFFLOWER

Abstract

safflower (Carthamus tinctorius L. cv. Almais) were planted on 21/1/2005, to compare four methods of storage: freezer, refrigerator, room, and outdoor. This was to determine the best method to store seed of safflower. A randomized complete block design with four replications was used. Speed, ratio, and capacity of emergence were calculated .Roots and shoots length, their fresh and dry weight, total dry weight of plant, leaves no., and shoot to root ratio were estimated. Also seven sizes of seeds: yi = 6, y2 = 5.7, yj = 5J, y4. = 4.5, y5 = 4.2, y6 = 3.7, and y7 = 2.8 g in/100 seed, were planted on 28/2/2006, to investigate best seed size seedling vigour. Speed, ratio, and capacity of emergence were estimated, and root length, fresh and dry weight of root and shoot, and total dry weight of plant, were measured, shoot length and leaves no. were calculated for four periods. The results indicated that seed storage in ventilated room temp. (20-30 c) was superior in ratio and capacity of emergence (93%), root length (27 cm) shoot length (23 cm),no. of leaves (14 leaf for plant) and shoot fresh and dry weight (3.1 and 0.42g/plant), and moderate fresh root weight (0.82 g/plant) and lower dry weight of root (0.18g / plant),besides a higher ratio of emergence of shoot to root (.242%) . Large seed size (5.7g/100 seed) was superior in capacity of emergence (94%), root fresh weight (2.1 g/plant), high shoot and plant dry weight (0.36, 0.69 g/plant), shoot length and speed growth, leaves no. and their formation during four periods.