Remobilization at various grain sorghum genotypes response to impairment of plant photosynthesis using potassium iodide

Ramazanzadeh, S. and Beheshti, A. and Asgharipour, M.R. (2012) Remobilization at various grain sorghum genotypes response to impairment of plant photosynthesis using potassium iodide. Advances in Environmental Biology, 6 (1). pp. 349-357.

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Remobilizations of storage material from vegetative organs to grains compensate economic yield, particularly in drought stress conditions. In this study, the effects of impaired in the photosynthetic on remobilization percentage of sorghum maturity groups were examined. Treatments were arranged in a split-plot design as randomized complete block with 6 genotypes of grain sorghum (including short-, mid- and full-season genotypes) as main plot, and 2 status of plant photosynthesis including not interfere with the photosynthetic (normal conditions) and impaired in the photosynthetic through dehydration of the leaves and green parts of plants using potassium iodide (KI) in three replications. The experiment was conducted at the Agriculture and Natural Resources Research Station of Toroq, Northern Iran during 2010. The results showed that grain yield, biological yield, harvest index, remobilization percent were significantly different across sorghum maturity groups. The greatest grain yield, biological yield, harvest index and number of grains per panicle were obtained at M5 genotypes (6104 kg ha-1, 16010 kg ha-1, 38% and 60, respectively). Highest remobilization percentage transferred of the 9early genotype of the 532 / 5gr/ m2 and the highest percentage remobilization and highest remobilization efficiency to the 2Genotype of mid groups and 9early groups the range respectively 39/99% and 69/08 % . biological yield treatment of this non disorder in photosynthesis rate was 70% compared to the increased disorder. Correlation analysis that there was positive and significant correlation between dry matter remobilization accumulation with remobilization efficiency (P <0.01), r = 0.920) and percentage remobilization (P<0.01), r = 0.640)

Item Type: Article
Author Affiliation: 1 Islamic Azad University Mashhad Branch, Iran, Mashhad, Iran 2 Khorasan Agricultural and Natural Resource Research Center, Mashhad, Iran 3 College of Agriculture, University of Zabol, Zabol, Iran
Subjects: Plant Protection
Crop Improvement
Divisions: Sorghum
Depositing User: Mr. SanatKumar Behera
Date Deposited: 29 Mar 2012 05:28
Last Modified: 29 Mar 2012 05:29
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