A Study on the Dynamic Change of the Winter Wheat Root System Vigour

doi:10.3321/j.issn:1000-7091.1993.z1.015

Abstract

Abstract: The dynamic change rule of the winter wheat root system vigour was studied under the condition of pot culture. The results showed that the characteristics of root system vigour change differed at different growth and development stages. Before spring the wheat seedling was at the vegetative growth and the roots vigour was weaker yet. Its regression equation is:y=36.16-0.62a+2.7×10^-3x²（r=-0.7460）. After spring the vegetative growth and reproductive development are all last, so the roots vigour increases. When it re-tures to the reproductive development stage, the root system vigour decreases. The regression equation is:y=4.0749xe^-0.0464x（r=-0.9900）. At the spike formation stage, the root system vigour is the strongest. The change tendency of dry weight of the roots and of the stem and leaves is different from that of root system vigour. The root system vigour decreases with the increase of spike dry weight.

Key words: Winter wheat, Root system vigour, Root dry weight, Spike dry weight

Wang Zhifen, Chen Xueliu, Yu Meiyan, Shen Xiuzhen, Wang Kuibo, Wang Tongyan. A Study on the Dynamic Change of the Winter Wheat Root System Vigour[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1993, 8(S1): 70-73. doi: 10.3321/j.issn:1000-7091.1993.z1.015.

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