Inter-cultivar variations of phosphorus deficiency stress tolerance in hydrponically grown Brassica

Akhtar M. Shahbaz, Oki Yoko, Adachi Tadashi, Yoshiyuki Murata, Maqsood A. Gill, M. H Rashid Khan, Kurimoto Hiroyuki

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Phosphorus (P) plays a central role as reactant and effector molecule in plant cell metabolism but P is limiting for crop yield on >30% of the world's arable land. Fear of depletion of world reserves of rock P, consistently increasing prices of phosphate fertilizers coupled with their notoriously low utilization efficiency has made the P-application cost ineffective and unacceptable choice for amelioration of inorganic phosphate (Pi) deficiency. A solution culture experiment was conducted to evaluate ten Brassica cultivars for their relative efficiency to utilize deficiently (20 μM) and adequately (200 μM) supplied P, in Johnson's modified solution. Pi deficiency markedly reduced shoot dry matter (SDM), root dry matter (RDM) production. Control of whole plant dry matter by plant P content under P deficient conditions suggests an internal regulation in addition to the influence exerted by external P supply. There were large differences of plant growth among Brassica cultivars exposed to the same P concentration in the growth medium. The cultivars differed significantly (p

Original languageEnglish
Pages (from-to)601-613
Number of pages13
JournalSongklanakarin Journal of Science and Technology
Volume28
Issue number3
Publication statusPublished - May 2006

Fingerprint

Brassica
stress tolerance
phosphorus
cultivars
phosphorus fertilizers
arable soils
fearfulness
dry matter accumulation
crop yield
culture media
rocks
plant growth
phosphates
metabolism
shoots
cells

Keywords

  • Brassica
  • Growth response
  • P content
  • P stress factor
  • P-use efficiency

ASJC Scopus subject areas

  • General

Cite this

Shahbaz, A. M., Yoko, O., Tadashi, A., Murata, Y., Gill, M. A., Khan, M. H. R., & Hiroyuki, K. (2006). Inter-cultivar variations of phosphorus deficiency stress tolerance in hydrponically grown Brassica. Songklanakarin Journal of Science and Technology, 28(3), 601-613.

Inter-cultivar variations of phosphorus deficiency stress tolerance in hydrponically grown Brassica. / Shahbaz, Akhtar M.; Yoko, Oki; Tadashi, Adachi; Murata, Yoshiyuki; Gill, Maqsood A.; Khan, M. H Rashid; Hiroyuki, Kurimoto.

In: Songklanakarin Journal of Science and Technology, Vol. 28, No. 3, 05.2006, p. 601-613.

Research output: Contribution to journalArticle

Shahbaz, AM, Yoko, O, Tadashi, A, Murata, Y, Gill, MA, Khan, MHR & Hiroyuki, K 2006, 'Inter-cultivar variations of phosphorus deficiency stress tolerance in hydrponically grown Brassica', Songklanakarin Journal of Science and Technology, vol. 28, no. 3, pp. 601-613.
Shahbaz, Akhtar M. ; Yoko, Oki ; Tadashi, Adachi ; Murata, Yoshiyuki ; Gill, Maqsood A. ; Khan, M. H Rashid ; Hiroyuki, Kurimoto. / Inter-cultivar variations of phosphorus deficiency stress tolerance in hydrponically grown Brassica. In: Songklanakarin Journal of Science and Technology. 2006 ; Vol. 28, No. 3. pp. 601-613.
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