PMID: 19137825Jan 14, 2009Paper

Drought stress effects on root anatomical characteristics of rice cultivars (Oryza sativa L.)

Pakistan Journal of Biological Sciences : PJBS
A Mostajeran, V Rahimi-Eichi

Abstract

The objective of this study was to compare some aspects of root anatomy of rice cultivars under irrigation and submerged conditions. Seedling of three new rice cultivars (Zayande-Rood, 829 and 216) were transferred to 9 lysiometers (200 x 120 x 100 cm) according to a randomized block design with two treatments (submerged and aerated condition) in three replicates. The amount of water consumption was recorded during growing season. Cross-sections of plant roots were obtained at two different times; two and four months after seedling. The root samples were prepared from 20 mm of tip. Root cross-sections were successively stained with 1% aqueous solutions of Methyl green and Congo red. Figures of sections were made by LM. Anatomical differences were observed among the three cultivars submitted to water regimes regarding the amount of aerenchyma tissue and cell walls of secondary tissues. The irrigated roots of the three cultivars presented a decreasing tendency in the proportion of the area of the cortex destined for the aerenchyma besides thickening of the cell walls of endodermis, pith and sclerenchyma layer cells. The rate of aerenchyma disappearing in the irrigated plants suggested different behaviors in different cultivars. Z...Continue Reading

Citations

Jul 14, 2012·Journal of Experimental Botany·Amelia HenryRachid Serraj
Apr 15, 2011·Genetics and Molecular Research : GMR·N N BomfimN M A Nassar
Feb 26, 2019·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Amol S PhuleP Ananda Kumar
Dec 5, 2018·Rice·Mohamed Hazman, Kathleen M Brown

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