تأثير تراكيز مختلفة من حامض الجبريلين (GA3)‎ في بعض صفات لضربين من الشعير (Hordeum vulgare L.)‎

Abstract EN

A study was conducted in the department of biology in the education college for pure science at Thi-Qaruniversity in a green plastic house to study the effect of gibberellic acid spread in a different concentrations were (0, 30,60,90, 120 and 150) mg/L on some shoot and root growth parametrs of two varieties of barley(Hordeum vulgare L.) are known Warkaa and local.

The effect of concentration (150) mg\L of gibberellic acid causes an significant increase on all parametrs which were studied the Warkaa variety was a significant excellence on some characters compared of the local variety were, height average of plant (29.0, 19.3) cm, the leaves number average (15.5, 5) leaf\plant, the stem diameter average (4.25, 1.5) mm, and the percentages of dry matter of shoots (%42.01, %30.23) and roots (%32.01, %20.31), The estimation of the total chlorophyll concentrations(1.18, 0.60) mg/100 gm of the fresh weight, respectively.