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Study on the Effect of several concentrations of Antitranspirants , Salicylic acid and Irrigation Intervals on the density and distribution of stomata on the epidermis of Maize (zea mays L.) Cultivated in Diwanyia
ر #$% ا &' ز# و % ي د ا و ا ! و " دات ا ا *درا - ا#' ا ' 1 رو 2 ا Zea mays L. اء / رة ا 0 ة *+ ا ,-

Author: Maha Ali Abdulameer 6 ا +1 1 5
Journal: Al-Qadisiyah Journal of pure science(quarterly) مجلة القادسية للعلوم الصرفة (فصلية). ISSN: 19972490 Year: 2016 Volume: 3 Issue: 21 Pages: 71-87
Publisher: Al-Qadisiyah University جامعة القادسية

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Abstract

The present experiment was conducted during the autumn of the year (2012) in the city ofAl-Diwanyia (Iraq). The goal of the experiment was to find the effect of different types ofAntitranspirants (each type with two Concentrations), Salicylic acid (with and without treatment) andirrigation intervals (5, 10 and 15 days), and their interactions on the density and distribution ofstomata on the epidermis of maize (zea mays L.) .The experiment was designed in a randomizedcomplete blocks (RCBD), in a Factorial arrangement (3*2*7) with three replications. The RevisedLeast Significant Difference (RLSD) at 0.05 probability level was used to compare treatmentsmeans, whenever significant effects were evident.The Antitranspirants and Salicylic acid (firsttreatment) as well as irrigation intervals were applied at (4- 5 fully expanded leaves) stage. While thesecond application of Antitranspirants and Salicylic acid, was after a month, at the beginning oftasseling ( 50%). Stomatal frequency and Stomatal index were measured and Results showed: (1-The use of Reflectant antitranspirants (Kaolin and Magnesium carbonate) decreased Stomatalrequency and Stomatal index for both abaxial and adaxial epidermis, While the stomatal densityncreased when the antitranspirant sodium salicylates was used. 2- Foliar application of Salicylic acidincreased Stomatal frequency for both abaxial and adaxial epidermis and Stomatal index for adaxialepidermis., while it didn’t affect the Stomatal index of the abaxial epidermis. 3- Both Stomatalrequency and Stomatal index increased as the irrigation interval increased, and the irrigation of 10-day interval recorded higher Stomatal frequency and Stomatal index for abaxial epidermis while theirrigation of 15-day interval had a Significant impact on the adaxial epidermis.4- Triple interactionbetween the three factors included in the experiment revealed significant effect on all parametersstudied.

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