Effects of temperature on the growth of rice nursling seedlings in a nursery chamber

Mitsuo Saito, Yusuke Goto

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1 Citation (Scopus)


The effects of temperature on the growth of rice nursling seedlings in a nursery chamber were investigated to clarify the standard growth of nursling seedlings. Rice cultivar Sasanishiki seeds with buds 0.3~1.0 mm long were sown on a culture medium of granulated soil. In order to keep the temperature of the culture medium accurate, the medium was \varmed with water in a nursery chamber before seeding. The seedlings were raised in nursery chambers kept at 3 constant temperatures (31 °C, H plot ; 28°G, M plot ; and 25°C, L plot) and 2 changing temperatures (25°C-2days to 31°C, L2H plot ; and 25°C-3days to 31°C, L3H plot) under wet and dark conditions. The growth rate of plant length increased with increasing temperature. In the H plot, the plant length reached 7 cm 4 days after seeding, which is a suitable size required for the transplanting machine. In the same cumulated average temperature after seeding (CAT), plant length was longer when subjected to high temperature as compared to low temperature, and the leaf emergence rate was faster under high temperature. The above results make it clear that it is not suitable to compare the growth of nursling seedlings raised under different temperatures using only CAT. After changing temperature, the growth pattern of the plant lengths in the L2H and L3H plots were nearly equal to that in the H plot. Therefore, it was suggested that the nursling seedlings were not damaged by the low temperature for 2 and 3 days immediately after seeding.

Original languageEnglish
Pages (from-to)284-288
Number of pages5
JournalJapanese Journal of Crop Science
Issue number3
Publication statusPublished - 1998


  • Changing temperature
  • Cumulated temperature
  • Nursling seedling
  • Raising of seedling in nursery chamber
  • Raising temperature
  • Rice plant
  • Seedling length

ASJC Scopus subject areas

  • Food Science
  • Agronomy and Crop Science
  • Genetics


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