Changes in carbohydrate metabolism by triazole growth regulators in cassava (Manihot esculenta Crantz); effects on tuber production and quality

Muthiah Gomathinayagam, Cheruth Abdul Jaleel, G. M.Alagu Lakshmanan, Rajaram Panneerselvam

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

We have evaluated the ability of two triazole growth regulators, viz. triadimefon (TDM) and hexaconazole (HEX), in the enhancement of tuber production and quality in cassava (Manihot esculenta Crantz) through their effects on carbohydrate metabolism. One litre of 20 mg-1 TDM and 15 mg-1 HEX solution per plant were used for the treatments and groundwater was given to control plants. Triazole treatments reduced plant height and leaf area, but increased fresh and dry weights. Plants treated with TDM showed an increased net assimilation rate, which is followed by HEX and control plants. Triazole compounds increased the relative growth rate of cassava after 200 DAP, i.e. in the phase of tuber enlargement. Triazole compounds increased the starch and other carbohydrate contents and carbohydrate metabolising enzyme activities. From the results of this study, it can be concluded that these triazoles can significantly enhance the tuber production and quality by affecting the starch metabolism, apart from their fungicidal properties. To cite this article: M. Gomathinayagam et al., C. R. Biologies 330 (2007).

Original languageEnglish
Pages (from-to)644-655
Number of pages12
JournalComptes Rendus - Biologies
Volume330
Issue number9
DOIs
Publication statusPublished - Sep 1 2007
Externally publishedYes

Keywords

  • Growth
  • Hexaconazole
  • Starch
  • Sugar
  • Triadimefon
  • Yield

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Agricultural and Biological Sciences(all)

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