| Pak. J. Bot., 36(2): 359-372, 2004. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
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EFFECT OF DIFFERENT IRRIGATION INTERVALS ON GROWTH OF CANOLA (BRASSICA NAPUS L.) UNDER DIFFERENT SALINITY LEVELS HUMAIRA GUL AND RAFIQ AHMAD
Abstract: Effect
of different irrigation intervals on the growth of canola cv. Oscar under saline
water irrigation of different sea salt concentrations was investigated. Plants
were subjected to control (non-saline), 0.4 (EC 4.5 dS.m-1) and 0.6% (EC 6.5 dS.m-1)
of sea salt concentrations. Vegetative growth was recorded in terms of plant height,
number of leaves and branches, fresh and dry shoot biomass per plant, while reproductive
growth was noted in terms of number of flowers and siliquae per plant; siliquae
weight; seed number and weight per siliquae; seed number and weight per plant.
Plant growth on vegetative as well as reproductive phases was proportionately
inhibited with respect to increasing salinity in irrigation water. Vegetative
and reproductive growth of the plants was much reduced under 6 days irrigation
interval as compared to 2 or 4 days irrigation interval under non-saline as well
as saline water irrigation. Biosaline Research Laboratory, Department of Botany, University of Karachi, Karachi, Pakistan. |
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