Paper Information

Journal:   JOURNAL OF SCIENCE AND TECHNOLOGY OF GREENHOUSE CULTURE   FALL 2014 , Volume 5 , Number 19; Page(s) 65 To 79.
 
Paper: 

EFFECT OF POTASSIUM AND DROUGHT STRESS ON GROWTH INDICES AND MINERAL CONTENT OF SAFFLOWER LEAF

 
 
Author(s):  AZIZABADI E., GOLCHIN A., DELAVAR M.A.
 
* 
 
Abstract: 

To study the effects of potassium (K) and drought stress on growth indices and mineral content of safflower leaf, a factorial experiment with 12 treatments and three replications was performed, using a completely randomized design, in the greenhouse of Soil Science Department, Zanjan University, Iran. The experimental treatments were a combination of four levels of K (80, 130, 180 and 230 mg/kg) and three levels of drought stress (irrigation at 100% FC, 60% FC and 30% FC) applied to the pots containing 5 kg soil. Results showed that drought stress reduced plant height, leaf area, and dry weight of aerial parts and relative water content of leaf but increased the chlorophyll index of leaves. Drought stress also decreased concentration of zinc (Zn), manganese (Mn), copper (Cu), phosphorus (P), nitrogen (N) and calcium (Ca) in leaves but increased iron (Fe) and K content of leaves. Application of K increased all the measured growth indices. It also increased concentration of K, Fe and Cu and decreased concentration of N, P, Ca, Mn and Zn in leaves. In general, drought stress reduced dry matter production and disturbed ionic balance in safflower. But, application of K reduced the deteriorative effects of drought stress on safflower.

 
Keyword(s): AVAILABLE WATER DEFICIT, GROWTH TRAITS, LEAF CHEMICAL COMPOSITION
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 39
 
Latest on Blog
Enter SID Blog