EFFECT OF SEED PRIMING AND DEFICIT WATER AT CERTAIN GROWTH STAGES ON GROWTH, AND YIELD COMPONENTS OF SORGHUM [Sorghum bicolor (L.) Moench]
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Abstract
experiment of field crops department, college of agriculture-university of
Baghdad/Al-Jadiriya. The objective was to investigate the effect of seed priming
and deficit water at different growth stages on growth, grain yield and its
components, quality properties, water consumption and water use efficiency of
sorghum (sorghum bicolor (L.) Moench) variety Bhoth70. The nested design with
three replicates was used, where blocks were specified for cutting irrigation
water treatments, during plant growth stages until 50% of depletion of available
water. They were: full irrigation(I1), cutting water at 5 leaves stage (I2), cutting
water at the appearance of last folded leaf(I3), cutting water at 50% flowering
(I4), cutting water at two growth stages I3 +I4 (I5) and cutting water at three
growth stages I2+I3+I4(I6).Within each block, seed priming treatments were laid
out. They were: Gibberllic acid (600mg L-1),Kinetin(100mg L-1), Ascorbic acid
(30mg L-1) and un primed seeds (dry seed as control). the results indicated, All
seed priming treatments with GA3 indicate increase in number of grains per
head (2349 grain), grain yield (5.769 t ha-1)biological yield (19.72 t ha-1). Ascorbic
acid treatment gave the highest value of 1000 grain weight (31.84 gm). grain
yield was reduced by 44.15% at three growth stages, 38.03% at two growth
stages and 33.90% at 50% flowering compared with full irrigation treatment,
however, cutting water at the appearance of last folded leaf and five leaves stages
gave the less reduction 15.52 and 3.13%, respectively.
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Copyright (c) 2018 Hisham Raad Ali, Khader Abbas Jadoua (Author)
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