Experiment design and Data analysis
All studies were performed as factorial experiments in a completely
randomized design with five replications (glass jars) per treatment
and four explants per replication. Data of each experiment were sub-
jected to analysis of variance (ANOVA) by the General Linear Mod-
els procedure using SAS 9.1 software (SAS Institute Inc., Cary, NC,
USA). Means were compared using the Least Significant Difference
(LSD) method at P≤ 0.05.