Effect of Drought Stress on Yield, Its Components of Corn in Different Plant Date in Climate of Ahwaz

Subject Areas : agronomy

Received: 2011-04-30 Accepted : 2011-08-01 Published : 2015-10-23

Keywords: Drought stress, corn, Function, plant date,

Abstract :

  Effect of Drought Stress on Yield, Its Components of Corn in Different Plant Date in Climate of Ahwaz   Abstract The understanding of drought stress effect mechanisms in dry and semiarid lands, play a key role in management of various irrigation regimes to confronting with environmental adverse conditions and also to promote function and farm management in corn plant. This research is performed in 1387 summer, at Shahid Salemi irrigation institute farm in Ahvaz County and with 256 mm rainfall average.Test is done in the form of factorial plot and in accidentally complete blokes' plot with four repetitions. Test factors include: 4 date of water shut off (without   irrigation cut = .I, irrigation cut in 10 leaf stage = I, irrigation cut in flower  crown stage = I , and irrigation cut in seed becoming full = I ) and in second factor, 3 plant date were: ( 20 JUL= D1 and 5 AUG= D2, and 20 AUG= D3). According to variance analyze results, water stress, different plant date and their mutual effect on seed function; harvest index and biologic function were meaningful. Drought stress cause the reduction of biologic function, seed function, harvest index, weight of thousand seed, row number in corn and seed number in corn. Seed function in I3 treatment, was 9/43 ton in hectare, which regarding to ware shortage and famine phenomena, it is under consideration. Effect of Drought Stress on Yield, Its Components of Corn in Different Plant Date in Climate of Ahwaz   Abstract The understanding of drought stress effect mechanisms in dry and semiarid lands, play a key role in management of various irrigation regimes to confronting with environmental adverse conditions and also to promote function and farm management in corn plant. This research is performed in 1387 summer, at Shahid Salemi irrigation institute farm in Ahvaz County and with 256 mm rainfall average.Test is done in the form of factorial plot and in accidentally complete blokes' plot with four repetitions. Test factors include: 4 date of water shut off (without   irrigation cut = .I, irrigation cut in 10 leaf stage = I, irrigation cut in flower  crown stage = I , and irrigation cut in seed becoming full = I ) and in second factor, 3 plant date were: ( 20 JUL= D1 and 5 AUG= D2, and 20 AUG= D3). According to variance analyze results, water stress, different plant date and their mutual effect on seed function; harvest index and biologic function were meaningful. Drought stress cause the reduction of biologic function, seed function, harvest index, weight of thousand seed, row number in corn and seed number in corn. Seed function in I3 treatment, was 9/43 ton in hectare, which regarding to ware shortage and famine phenomena, it is under consideration.  

References:

 

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