EFFECT OF SEED SOAKING IN DIFFERENT CONCENTRATIONS OF CYTOKININ (BA) AND 2.4-D ON SOME MORPHOLOGICAL CHARACTERISTICS OF Pinus brutia TEN.
Mesopotamia Journal of Agriculture,
2013, Volume 41, Issue 3, Pages 185-198
AbstractThis study was conducted at nursery and silviculture laboratory of forestry dept. during the 2nd of April- 2009 until 1st of July- 2010 and the objective was determining the effect of Cytokinine , Benzyladenine (BA), Auxine 2.4-Dichlorophenoxy acetic acid (2.4-D) and the interaction between them on several morphological characteristics of Pinus brutia Ten. This was done through seeds soaking for (72h.) in Solution of different concentrations of (BA) and (2.4-D) then treated seeds were sowed in plastic bags Containing sandy loam soil after that the field study was completed by laboratory work. The result showed a wide range of variation between growing transplants which treated by different concentration levels of (BA) and (2.4-D). Treatment of 0.25 mg/l – BA was the best in most studied traits in comparison with other concentrations and control. Also there was a
light significant differences between treatment of (2.4-D) regime for germination percentage and the treatment of 0.1 mg/l -2.4-D was the best in comparison with other treatment and control in most studied characteristics, but treatment y 0.2 mg/l 2.4-D revealed significancy in secondary root numbers trait only . In the situation of (BA) and (2.4-D) interaction effect , The interaction of (0.25 mg/l –BAZero 2.4-D ) was the best in most of the traits, when minimumt effect was reveald in interaction of (0.50 mg/l- BA x 0.6 mg/l- 2.4-d.
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