استجابة نبات النرجس للرش بالبيوترسين و المغنيسيوم المخلبي و تأثيرهما في بعض صفات النمو الخضري و المحتوى الكيميائي للأوراق و النمو الزهري

الملخص EN

An experiment was conducted in a nursery of the Department of Horticulture and landscape design / College of Agriculture / Al-Kufa University in Al-Najaf province in plastic pots from the period of 1 / 10 / 2011 untill 28 / 2 / 2012 to study the effect of spraying of three concentrations of Puterscine i.

e.

0, 50, 100 mg.

L-1 and three concentrations of Chelated Magnesium i.

e.

0, 500, 1000 mg.

L-1 on the vegetative growth leaf number, dry weight of Shoot, total chlorophyll content in leaves and flowering floral stem length, flower diameter, vase age of the flower and chemical , total soluble carbohydrate , and percentage of phosphorus, magnesium , and protein .

parameters of Narcissus plant , with two spraying times i.

e.

2 / 12 / 2011 and 2 / 1 / 2012 for Chelated Magnesium and 3 / 12 / 2011 and 3 / 1 / 2012 for puterscine The experiment conducted as factorial experiment , Randomized Complete Block Desing (R.

C.

B.

D.) with three replicates , means were compared by Least Significant Difference (LSD) at probability level of 0.05 Results showed that, Spraying with Puterscine at concentration of 100 mg.

L-1 or Chelated Magnesium at concentration of 1000 mg.

L-1 increased significantly all studied characteristics which gave the highest leaf number, dry weight of Shoot, floral stem length, flower diameter, vase age of the flower, total chlorophyll content in leaves, total soluble carbohydrate, and percentage of phosphorus, magnesium, and protein in leaves.

Reslts also revealed that the interaction between plant treated with Puterscine at concentration of 100 mg.L-1 and Chelated Magnesium at concentration of 1000 mg.

L-1 increased significantly all the studied characteristics.