Meny

Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Water Use Efficiency of Four Dryland Wheat Cultivars under Different Levels of Nitrogen Fertilization

Författare:
Publiceringsår: 2011
Språk: Engelska
Sidor: 843-854
Publikation/Tidskrift/Serie: Journal of Agricultural Science and Technology
Volym: 13
Nummer: 6
Dokumenttyp: Artikel
Förlag: Tarbiat Modares Univ

Sammanfattning

It is suggested that cultivars of wheat (Triticum aestivum L.) with regulated growth and development would be able to produce higher yields under water-limited conditions, which is crucial in future food production. Water use efficiency (WUE) is worthy of exploration in this regard. In this study, the effects of nitrogen fertilizer levels (0, 40 and 80 kg Nha(-1)) and a plant growth retardant (Chlormequat Chloride = CCC) on WUE of four dryland wheat cultivars (Agosta, Nicknejad, Azar-2 and Fin-15) were examined in a field experiment during 2006-07 and 2007-08 growing seasons at College of Agriculture, Shiraz University, Iran. The results showed that there existed significant differences between cultivars for grain yield, biomass and WUE. In the first season, the highest grain yield and biomass production (192.4 and 431.2 gm(-2), respectively) were obtained from Nicknejad cultivar, CCC application and using 80 kg Nha(-1), and in the second season, from Azar-2 cultivar (121.5 and 333.5 gm(-2), respectively). CCC and nitrogen had significant effects on photosynthesis rate and WUE in both seasons. Interaction of CCC and 80 kg Nha(-1) on WUE were significant in both seasons (1.24 and 2.72 gm(-2) mm(-1), respectively). It is suggested that interactive application of CCC and nitrogen fertilizer could have beneficial effects on wheat grain yield under similar agro-climatic conditions.

Disputation

Nyckelord

  • Earth and Environmental Sciences
  • Chlormaquat chloride
  • Drought Stress
  • Grain Yield
  • Photosynthesis Rate
  • (An)
  • Stomatal Conductance (gs)
  • WUE

Övriga

Published
Yes
  • ISSN: 1680-7073

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen