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    An effective method for estimation of rice (Oryza sativa L.) crown root numbers at the heading stage in saline-sodic soils of Northeast China

    Liu M1,2, Z-W Liang*1,2, L-H Huang1,2, M-M Wang1,2, H-Y Yang1,2

    Phyton-International Journal of Experimental Botany, Vol.85, pp. 162-168, 2016, DOI:10.32604/phyton.2016.85.162

    Abstract Saline-sodic stress is a major abiotic constraint responsible for rice (Oryza sativa L.) yield reductions in Northeast China. The rice root system is crucial for yield development, and it is usually recognized as the key for improving future crop productivity. However, most of the saline-sodic soils in these areas contain high levels of soluble Na2CO3 and NaHCO3, which results in a high pH (>8.5), clay dispersion, soil swelling, and overall poor soil physical properties. Isolation, washing and measurement of the rice crown roots is highly time-demanding in this kind of soil. Our aim was to explore whether differences in shoot… More >

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