journal6 ›› 2005, Vol. 26 ›› Issue (3): 95-100.

• Biological resources • Previous Articles     Next Articles

Roots Characteristics of  Resistance to Drought Stress in Brazilian Upland Rice IAPAR9


  1. (1.Department of Biological Engineering,Yueyang Vocational and Technological College,Yueyang 414000,Hunan China;2.College of Biological Resources and Environmental Science,Jishou University,Jishou 416000,Hunan China;3.College  of Life Science and Biotechnology,Shanghai Jiaotong University,Shanghai 200240,China;4.Hunan Agricultural University,Changsha 410128,China)
  • Online:2005-07-15 Published:2012-09-22

Abstract: This paper studied the roots morphology mechanism of drought resistance of IAPAR9 by method of contrast study on strong and weak drought resistant ability of varieties of common rice,hybrid rice,and  upland rice.The results showed that the correlation was significant between the drought resistant ability of rice and its length,volume,and weight;IAPAR9 had a middle level of roots;both the number and area of vascular tissues in rice roots were decreased greatly under drought stress,but IAPAR9 could maintain larger growth than others while drought was serious (40% soil saturated water content) because the area of its vascular tissure was larger,which should be one of the substantial foundations for its good dronght resistant ability.

Key words: Brazilian upland rice IAPAR9, roots characteristics, drought resistance

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