تأثير غمر البذور بتراكيز مختلفة من السايتوكاينين BA و الأوكسين 2.4-D في بعض الصفات المظهرية لشتلات الصنوبر Pinus brutia Ten

الملخص EN

This 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.