Plant Diversity ›› 2006, Vol. 28 ›› Issue (05): 523-528.

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The Effects of Aluminium on the Seed Germination and Seedling Growth in Hibiscus moscheutos (Malvaceae) and Wheat (Triticum aestivaum, Gramineae)

SUN Dong-Hua; TIAN Qiu-Ying; ZHANG Wen-Hao   

  1. College of Landscape Architecture
  • Received:2006-03-15 Online:2006-10-25 Published:2006-10-25
  • Contact: ZHANG Wen-Hao

Abstract: The effects of AlCl3 on Hibisucs moscheutos seed germination and growth were investigated to evaluate its hardiness to Aluminum (Al), in compassion with Carazinho, a wheat genotype tolerant to Al, and Egret, agenotype sensitive
to Al . For H. moscheutos and two wheat genotypes, our results indicated that germination was insensitive to AlCl3 until at 500μmol/L. AlCl3 of 50μmol/L inhibited the elongation of primary and lateral roots significantly, but had less effect on the number of lateral roots. There was no difference of root elongation between the H. moscheutos and wheat, but the lateral roots of H. moscheutos were more tolerant to Al than that of wheat genotypes. Under AlCl3 of 50μmol/L, the reduction of root biomass was significant in wheat genotypes, but not in H. moscheutos, comparing to their control, suggesting that H. moscheutos is more tolerant to Al than the two wheat genotypes, and that Al has different effects on the growth of primary and lateral roots in both H. moscheutos and wheat .

Key words: Hibiscus moscheutos

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