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Acta Prataculturae Sinica ›› 2012, Vol. 21 ›› Issue (4): 72-78.

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Effect of water stress on the growth of kinggrass

WEN Cui-ping1, LI Wei1, QI Zhi-ping2, TANG Shu-mei1   

  1. 1.College of Agriculture, Hainan University, Danzhou 571737, China;
    2.Tropical Crops Genetic Resources Institute, CATAS, Danzhou 571737, China
  • Received:2011-06-20 Online:2012-04-25 Published:2012-08-20

Abstract: A pot culture experiment was used to study growth and mechanisms of physiological response of kinggrass (Pennisetum purpureum×P. glaucum) in different soil moisture conditions to provide a reference for rational water use in kinggrass production. With a reduction of soil moisture content, the fresh weight, dry weight, organization water content and relative water content gradually decreased while water sufficiency deficiency and free proline of kinggrass gradually increased. The most suitable soil moisture content for kinggrass was 65%-75% of field capacity, and kinggrass could grow normally at 55%-95% of field capacity, but growth was limited at 5%-45% or during flooding.

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