EFFECT OF DROUGHT STRESS AND MYCORRHIZAL SYMBIOSIS ON GROWTH AND PHOSPHORUS UPTAKE BY TWO SORGHUM CULTIVARS DIFFERENT IN ROOT MORPHOLOGY

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NADIAN H.

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Journal: Journal of Water and Soil Science Year:2011 | Volume:15 | Issue:57 Page(s): 127-140

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Title

EFFECT OF DROUGHT STRESS AND MYCORRHIZAL SYMBIOSIS ON GROWTH AND PHOSPHORUS UPTAKE BY TWO SORGHUM CULTIVARS DIFFERENT IN ROOT MORPHOLOGY

Author(s)

NADIAN H. | Issue Writer Certificate

Keywords

DROUGHT STRESSQ2

SORGHUMQ3

MYCORRHIZAQ2

PHOSPHORUSQ2

Abstract

Effect of DROUGHT STRESS and MYCORRHIZAl symbiosis on growth and PHOSPHORUS (P) uptake by two SORGHUM cultivars different in root morphology was studied in a pot experiment. A factorial experiment with a randomized complete block design was performed. In this study, SORGHUM speed feed cultivar with high root proliferation and branching and SORGHUM KFS2 cultivar with low root proliferation and branching were colonized by Glomus intraradices. All plants were watered equally in the first three weeks to establish them. DROUGHT STRESS was applied from the week four and the plants were watered when 40% (T1), 60% (T2) and 80% (T3) of the available water was consumed. Results showed that in both SORGHUM cultivars, plant dry weight decreased as DROUGHT STRESS was increased. However, dry weight of MYCORRHIZAl plants was higher than that of non-mycorrhizal plants at all levels of DROUGHT STRESS. This increase for speed feed cultivar was greater than for KFS2 cultivar. PHOSPHORUS concentration and total P uptake in shoot of both MYCORRHIZAl plants were greater than those of non-mycorrhizal plants. P accumulation in both cultivars decreased by increasing DROUGHT STRESS due to the decline in plant biomass. However, P accumulation per unit length of colonized root increased by increasing DROUGHT STRESS. The greater percentage of root colonization and the increased total length of external hyphae per unit length of colonized root of KFS2 cultivar led to an increase in MYCORRHIZAl growth response and improved P nutrition of KFS2 cultivar compared to those of speed feed cultivar.

Cites

EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGI ON ROOT COLONIZATION AND PHOSPHORUS UPTAKE OF LINSEED (LINUM USSITATISSIMUM L.) UNDER DROUGHT STRESS CONDITIONS

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APA: Copy

NADIAN, H.. (2011). EFFECT OF DROUGHT STRESS AND MYCORRHIZAL SYMBIOSIS ON GROWTH AND PHOSPHORUS UPTAKE BY TWO SORGHUM CULTIVARS DIFFERENT IN ROOT MORPHOLOGY. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 15(57), 127-140. SID. https://sid.ir/paper/15155/en

Vancouver: Copy

NADIAN H.. EFFECT OF DROUGHT STRESS AND MYCORRHIZAL SYMBIOSIS ON GROWTH AND PHOSPHORUS UPTAKE BY TWO SORGHUM CULTIVARS DIFFERENT IN ROOT MORPHOLOGY. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2011;15(57):127-140. Available from: https://sid.ir/paper/15155/en

IEEE: Copy

H. NADIAN, “EFFECT OF DROUGHT STRESS AND MYCORRHIZAL SYMBIOSIS ON GROWTH AND PHOSPHORUS UPTAKE BY TWO SORGHUM CULTIVARS DIFFERENT IN ROOT MORPHOLOGY,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 15, no. 57, pp. 127–140, 2011, [Online]. Available: https://sid.ir/paper/15155/en

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