Effect of applications of superabsorbent and drought stress on electrical conductivity, number of seed, diameter of head and percent of protein in sun flower

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Research Paper 01/12/2014
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Effect of applications of superabsorbent and drought stress on electrical conductivity, number of seed, diameter of head and percent of protein in sun flower

Hamed Keykha, Elahe Rahdar, Mohammad Mahdi Raoofi, Amir Zarabi
J. Bio. Env. Sci.5( 6), 184-189, December 2014.
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Abstract

Sunflower is the most important oil crop in Serbia as well as in some other parts of the world. Sunflower is most sensitive to water deficit stress in its flowering and seed-maturity stages. On the other hand, flower initiation and seed setting stages were reported as the sensitive stages of sunflower life cycle to water deficit. One such mechanism that is ubiquitous in plants is the accumulation of certain organic metabolites of low molecular weight that are collectively known as compatible solutes. The application of super absorbent polymer has a significant impact in reducing drought stress effects and to improve plants yield and stability in agriculture production. The field experiment was laid out in randomized complete block design with split plot design with three replications. Treatments included irrigation as a main plot in four levels included (Full irrigation, water stress in fourth and fifth even leaf, water stress in flowering stage, water stress in fourth and fifth even leaf + water stress in flowering stage ) and concentrations of Superabsorbent in three levels included (0, 15 and 30 kg/ha) as sub plot. Analysis of variance showed that the effect of water stress on electrical conductivity, number of seed and diameter of head was significant.

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