Effect of Naphthalene acid and Salicylic and Humic acid replecation in some Anatomical Characteristics of Nigella sativa L.

Abstract

The experiment was coducted during the agricultural season 2010-2011 in college of Science /AL-Qadisiya University . To study the effect of growth regulators Nephthalin acetic acid and Salicylic acid and humic acid in some anatomical Characteristics of Black seed (Nigella sativa L.) . The anatomical characters of stem measured included; epidermis thickness , cortex thickness, vascular bundle thickness, vessels diameter,and the number of stomata of upper and lower epidermis. The Results were as follow all Nephthalin acetic acid or Salicylic acid Humic acid concentrations caused an increase in the epidermis, cortex thickness and vascular bundles thickness .All Naphthalin acetic acid or Salicylic acid and Humic acid concentrations used, caused significant increase in the number of stomata in upper and lower epidermis.Interaction between the two Growth Regulators and Humic acid significantly effected in anatomical Characteristics .