الفعالية البايولوجية لحامض الجبرليك و مستخلص الكجرات في نمو و حاصل و محتوى زيت البابونج

الملخص EN

A field experiment was carried out during two winter successive seasons 2009-2010 and 2010-2011 at the experimental fields of the Field Crops Dept./ College of Agriculture/ University of Baghdad.

That was to study the spraying effects of foliar application of three levels of GA3 at 0, 100 and 200 mg GA3.l-1 with three levels of Hibiscus subdariffa extract (0, 5% and 10%), in a randomized complete block design with three replications.

In order to response detect the growth and volatile oil on chamomile plant (Matricaria chamomilla L.) common cultivar, in order to determine the best level of growth regulators which increase efficiency ability of plant production, and study plant morphological changes which result from physiological process, spraying accompanying, more over atrial to access to plant extract which give the same needed effects which hormone gibberellin marked caused in plant from using some active compounds found in some medical plants which act as growth encouraging factors or growth inhibition factors.

Results indicated that treat with GA3 and Hibiscus subdariffa extract was significantly increased values of all parameters measure.

However, levels of 100 mg GA3.l-1 and 10 percentage Hibiscus subdariffa extract showed highest values of: plant height 64.26, 86.86 cm, number of branches 36.66, 54.83 branches.plant-1, fresh weight of plant 1534.73, 1889.70 g, dry weight of plant 644.73, 779.70 g and content volatile oil percentage of flowers 1.51, 1.72 % , in both seasons, respectively.

We conclude that there is identical acts of GA3 which make stimulant effect, after that the stimulation become lower, in opposite to Hibiscus subdariffa extract which its simulant act increase by the increasing of concentration levels.

Therefore, we recommend to study the mechanism of bond between bio-active compounds that we found in Hibiscus subdariffa extract and GA3 in studied growth regulators.