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Title

Study some of morpho-physiological characteristics and grain yield of wheat under affected by chlormequat chloride, zinc sulfate and nitroxin application

Writers

  AHMADI M. | ZARE M.J. | EMAM Y.

Pages

 Start Page 1 | End Page 14

Abstract

 remobilization of reserves from stem during maturity is important in formation of grain yield of wheat under drought stress in terminal season. A field research was carried out at two sites: Ilam and Bushehr provinces during 2013-14 growing season. In these experiments conducted in completely randomized block with three replications, effects of three main factors including two concentration levels of chlormequat chloride (CCC) (0, 2. 5 g per liter), application of Zinc sulfate (Zn) at the three rates of 0, 25 and 50 kg per hectare and Nitroxin (Nit), as bio-fertilizer, (inoculated and non-inoculated seed) to investigate on morpho-physiological traits of bread wheat cultivar of Kohdasht. Results showed that CCC spraying significantly decreased plant height and amount of remobilized stem reserves. CCC application increased spike number per plant, grain number per spikeand grain yield by about 14. 6%, 13. 6% and 28. 5%, respectively. seed inoculation with Nitroxin increased plant height, amount of remobilized dry matter (ARDM), andremobilization efficiency (REE). The highest amounts of ARDM (64. 8 g. m-2), remobilization efficiency (REE) (32. 1%) and contribution of stem reserves to grain yield production (REP) (50. 8%) were obtained from plants of Nit-inoculated seeds applied with 50 kg per hectare of zinc sulfate and with no CCC application. CCC spraying at the concentration level of 2. 5 g per liter, application of 50 kg of Zn per hectare and inoculating seed with Nit treatment had the highest grain yield (171g m-2). Generally, it seems CCC, Zn and Nit were effectiveness in improvement and increasing grain yield of wheat under dry land farming.

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