GROWTH AND PHYSIOLOGIC RESPONSE OF RAPESEED (BRASSICA NAPUS L.) TO DEFICIT IRRIGATION, WATER SALINITY AND PLANTING METHOD

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SHABANI A.; SEPASKHAH A.R.; KAMGAR HAGHIGHI A.A.

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Journal Paper

Paper Information

Journal: INTERNATIONAL JOURNAL OF PLANT PRODUCTION Year:2013 | Volume:7 | Issue:3 Page(s): 569-596

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Title

GROWTH AND PHYSIOLOGIC RESPONSE OF RAPESEED (BRASSICA NAPUS L.) TO DEFICIT IRRIGATION, WATER SALINITY AND PLANTING METHOD

Author(s)

SHABANI A. | SEPASKHAH A.R. | KAMGAR HAGHIGHI A.A. | Issue Writer Certificate

Keywords

PHYSIOLOGIC PROPERTIES

PLANTING METHOD

RAPESEED

SALINITY

WATER STRESS

Abstract

Salinity and WATER STRESS reduces the ability of plant to take up water and decrease growth rate, photosynthesis rate (An) and stomatal conductance (gs) of plants. In this study, effects of deficit irrigation with different SALINITY levels and PLANTING METHOD (in-furrow and on-ridge) as strategies for coping with water and SALINITY stress on PHYSIOLOGIC PROPERTIES of RAPESEED was investigated in a two years experiment. Irrigation treatments consisted of full irrigation (FI) and 0.75FI and 0.50FI in first year and 0.65FI and 0.35FI in second year and SALINITY treatments of irrigation water were 0.6 (well water), 4.0, 7.0 m and 10.0 dS-1 in first year and 0.6, 4.0, 8.0 and 12.0 dSm-1 in second year. Planting in-furrow increased seasonal dry matter by 8.4 and 9.6%, respectively at first and second year (with frost occurrence in dormant period in second year) relative to on-ridge planting. In-furrow planting increased maximum leaf area index compared with on-ridge planting by 12.8% for second year. Deficit irrigation and SALINITY decreased dry matter, leaf area index and had no significant effect on crop growth rate (CGR) and relative growth rate (RGR). Decrease in applied water resulted in lower stomatal conductance (gs) and photosynthesis rate (An) and SALINITY had no significant effect on these traits. Ratio of photosynthesis rate to transpiration rate (leaf scale transpiration efficiency, An/T) decreased when leaf vapor pressure deficit (VPD) increased and in water and SALINITY stress conditions, transpiration efficiency of RAPESEED decreased. A linear function between An/T and VPD with negative slope indicated that in higher VPD, An/T decreased, therefore in WATER STRESS condition or in arid and semi-arid region in comparison with humid region An/T of RAPESEED decreased. There was no significant difference between the effects of water SALINITY levels (up to 12 dS m-1) and PLANTING METHOD on slopes of the relationships between An and gs and VPD. As forage plant, RAPESEED can be cultivated in soils with SALINITY of 3.4 dS m-1 and 11.7% deficit irrigation can be imposed without dry matter reduction and in-furrow PLANTING METHOD was proposed in SALINITY and WATER STRESS conditions in comparison with on-ridge planting.

Cites

MAIZE RESPONSE TO WATER, SALINITY AND NITROGEN LEVELS: PHYSIOLOGICAL GROWTH PARAMETERS AND GAS EXCHANGE

References

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Cite

APA: Copy

SHABANI, A., SEPASKHAH, A.R., & KAMGAR HAGHIGHI, A.A.. (2013). GROWTH AND PHYSIOLOGIC RESPONSE OF RAPESEED (BRASSICA NAPUS L.) TO DEFICIT IRRIGATION, WATER SALINITY AND PLANTING METHOD. INTERNATIONAL JOURNAL OF PLANT PRODUCTION, 7(3), 569-596. SID. https://sid.ir/paper/314686/en

Vancouver: Copy

SHABANI A., SEPASKHAH A.R., KAMGAR HAGHIGHI A.A.. GROWTH AND PHYSIOLOGIC RESPONSE OF RAPESEED (BRASSICA NAPUS L.) TO DEFICIT IRRIGATION, WATER SALINITY AND PLANTING METHOD. INTERNATIONAL JOURNAL OF PLANT PRODUCTION[Internet]. 2013;7(3):569-596. Available from: https://sid.ir/paper/314686/en

IEEE: Copy

A. SHABANI, A.R. SEPASKHAH, and A.A. KAMGAR HAGHIGHI, “GROWTH AND PHYSIOLOGIC RESPONSE OF RAPESEED (BRASSICA NAPUS L.) TO DEFICIT IRRIGATION, WATER SALINITY AND PLANTING METHOD,” INTERNATIONAL JOURNAL OF PLANT PRODUCTION, vol. 7, no. 3, pp. 569–596, 2013, [Online]. Available: https://sid.ir/paper/314686/en

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