Study On Contribution of Remobilization of Storage Materials in Wheat Yield by Potassium Iodide(KI).

Study on contribution of remobilization of storage materials in wheat yield by Potassium Iodide(KI)

Saeed Farhangi¹ , Masoud Ghodsi², Zeinab Mahmoudi^3
1Expert Supervisor of Seed & Plant Certification and Registration Research Department, Mashhad, Iran
² Member of scientific board of Agriculture and Natural Resources Research Center of Khorasan-e-Razavi,Mashhad,Iran

³ Member of Young Researchers Club, Azad University of Mashhad, Mashhad, Iran.
¹sa100.farhangi@gmail.com

 

Abstract
This investigation was conducted in order to study on accumulation and remobilization of storage materials and it^'s contribution on wheat yield by using split split plot design based on Randomized Completely Block Design with 3 replication in agricultural and natural resources research station of Torogh, Mashhad at 2006-07 growing season. Water stress treatment in two levels: 1- Normal conditions (full irrigation) and  2- terminal water stress assigned to main plot and new wheat genotypes treatment in 8 levels were allocated in sub plots, and photosynthesis conditions with 2 levels: 1- using of current photosynthesis and 2 inhibition of current photosynthesis were in sub-sub plots. Also, for inhibition of current photosynthesis, Potassium Iodide 0.4% solution and after spike appearance were used. Results showed that under condition of terminal water stress, in comparison with normal condition the percentage of storage material remobilization increased. Genotypes 9212,9116 give the highest biological and grain yield and amount of using their reserves were moderate, while genotypes C-81-10, 9103 have the highest percentage of storage remobilization.  
       Key words: Wheat genotype, Water Stress, Remobilization, Solution ,Potassium Iodide