Changes in Nutrient-Homeostasis and Reserves Metabolism During Rice Seed Priming: Consequences for Seedling Emergence and Growth

Muhammad Farooq*, Shahzad MA Basra, Abdul Wahid, Nazir Ahmad

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

In this study influence of different seed priming treatments on the nutrient-homeostasis and reserve metabolism during seedling emergence and growth of rice were determined. Seed priming treatments included pre-germination, hydropriming for 48 h, osmohardening with KCl and CaCl2, ascorbate priming and hardening. All treatments shortened the emergence time and enhanced the energy and index of seedling emergence. Seedlings from primed seeds had greater length, number of roots and fresh and dry mass than control. Among the treatments, CaCl2, ascorbate and KCl proved better in enhancing emergence and seedling growth. Seed priming changed the pattern of N and Ca2+ homeostasis both of the seeds and seedlings, which were associated to enhancing α-amylase activity and reducing sugars content. Positive correlations of seedling attributes with nutrient content suggested that as a result of seed priming, most of N and Ca2+ were partitioned to embryo, which enhanced seedling emergence and subsequent growth of rice seedlings.

Original languageEnglish
Pages (from-to)191-198
Number of pages8
JournalAgricultural Sciences in China
Volume9
Issue number2
DOIs
Publication statusPublished - Feb 2010
Externally publishedYes

Keywords

  • α-amylase activity
  • nutrient homeostasis
  • rice
  • seedling emergence
  • seedling vigor

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

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