| Characteristics of the variation of root volume and root surface area of naked oat |
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| DOI：10.7606/j.issn.1000-7601.2012.04.24 |
| Key Words: naked oat root volume root surface area |
| Author Name | Affiliation | | SONG Jinhui | Department of Agronomic Science, Hebei North University, Zhangjiakou 071000, China
College of Agronomy, Agricultural University of Hebei, Baoding 071001 | | GUO Jiang | Department of Agronomic Science, Hebei North University, Zhangjiakou 071000, China | | LI Longjiang | Zhangjiakou Agricultural Bureau, Zhangjiakou 071000, China | | ZHANG Lifeng | College of Agronomy, Agricultural University of Hebei, Baoding 071001 | | WANG Hongwei | Zhangjiakou Agricultural Bureau, Zhangjiakou 071000, China |
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| Abstract: |
| The variation of the root volume and root surface area at different growth stages was studied with two naked oat varieties, Pin-5 (late maturity) and Bayou-1 (early maturity). The results showed that the change
s of root volume of early and late maturity varieties were similar. It could be divided into three stages, including rapidly increasing stage (from jointing period to heading and flowering period), slowly declining stage (from heading and flowering period to grain filling period), and slowly rising stage (from grain filling period to mature period). Research on the root volume and root surface area of different soil layers showed that continued growth of root in 30～90 cm soil layer caused root surface area and root volume to increase slowly after grain filling. In the mid-late period of the late maturity of naked oats, there were extremely significant positive correlations between root volume, root surface area and root dry weight, etc. The traits of early maturity of naked oats displayed significant positive correlations except root dry and root surface area in the mid-late period |
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