Effect of Soil Water on Growth and Development of Primary and Adventitious Root of Winter Wheat

doi:10.3321/j.issn:1000-7091.1998.03.003

Abstract

Abstract: Study result indicated that the growth,number and branching of the primary and secondary roots were positively correlated with the moisture content in the earth body .The greater the stress is,the greater the inhibition will be.The primary roots ,especially the first and second lateral roots were found strong in stress resistance.The greater the moisture content is,the more the number of the third and fourth lateral roots will be.The secondary root was found extremely senstitive to soil and water conditions.It was severely inhibited when soil moisture content was lower than 60%. Irrigation after stress increaced the number of the third lateral roots of the primary root,extended the activity of the roots ,and further stimulated the growth of the lateral roots.From the jointing stage to the ear sprouting stage,especially in the booting stage,moisture was found to have the best regulation on the growth of roots.The field moisture content of 60% may be regarded as the lower limit of moisture regulation.

Key words: Primary root, Adventitious root, Development and growth, Branching ability, Soil water, Winter wheat

CLC Number:

S512.1

Feng Guanglong， Luo Yuanpei， Yang Peiling， Liu Jianli. Effect of Soil Water on Growth and Development of Primary and Adventitious Root of Winter Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1998, 13(3): 11-17. doi: 10.3321/j.issn:1000-7091.1998.03.003.

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