Effects of Auxin
Effects of Auxin and Cytokinin on morphological and Physiological factors in stem and root in
(Avene sativa L)
Parvaneh Rahdari1, Vahid Sharifzadeh2, Fahimeh Safarnejad 3, Farnosh Gholamhosain poor4, Sepideh Kazemi Aframjani5
1 2,3.4.5Department of Biology, Islamic Azad University, Tonekabon Branch, Iran
Abstract: NAA and BA hormones are of plant growth regulators. These hormones interfere in different physiological and morphological, growth and germination, oat is important as a food for livestock and also for its economic and medicine value. In this research, the effect of NAA and BA hormones was surveyed in different concentrations 0, 0/5, 1/5and 2/5 mg/l for some growth and biochemical factors of oat. In treatment plants indifferent concentrationsof NAA and BA, the highest grow thin the root and stem length related to NAAhas been 1/5 mg/lit. So by increasing NAA concentration to 1/5 mg/lit concentration, the stem length was increased and then decreased. And by increasing BAconcentration, the stem growth was decreased. And by the effect of NAA and BAconcentration to 1/5 mg/lit was observed increasing in stem length and then to decrease. And by increasing BA concentration, the length growth of stem was decreased to 1/5 mg/litconcentration and then it was observed increasing in the length growth of stem. So, the length growth of stem and root has statistically been meaningful than control group in the level of 0/01 and 0/05, respectively. The highest effect of different concentrations NAA and BA on the dry weight of root and stem in 2/5 mg/lit concentrations of BA hormone was observed, the highest wet Wight of root was observed relating to 0/5 mg/lit of NAAconcentration, and then it was decreased by increasing in wet weight concentration. But, by increasing BA hormone concentration, wet weight of root was increased. For dry weight, also like as wet weight, it was observed increasing similar to wet weight. Statistically, the effects of thesehormones for wet weight of root and stem were meaningful in the 0/01 level, but for dry weight of root and stem has been in 0/05 level. In the other word, the highest amount of a and b chlorophyll with treatment of 2/5 mg/lit NAA and BA hormones and the highest amount carotenoid with 0/5 concentration were observed. So, statistically the effects of these hormones on the amount of a and b chlorophyll, totalchlorophyll and carotenoid have been meaningful in 0/05 level. The effect of different treatment of these two hormones on the amount of carbohydrate and protein did not show a meaningful effect in oat.
[Parvaneh Rahdari, Vahid Sharifzadeh, Fahimeh Safarnejad, Farnosh Gholamhosain poor,Sepideh Kazemi Aframjani. Effects of Auxin and Cytokinin on morphological and Physiological factors in stem and root in (Avene sativa L.) Life Sci J 2013;10(1):788-795] (ISSN:1097-8135). http://www.lifesciencesite.com.
Keywords: NAA and BA, oat, chlorophyll, carotenoid, carbohydrate, protein, auxin.