Reduced crown root number improves water acquisition under water deficit stress in maize (Zea mays L.).

Marginally significant correlations were found between CN and rooting depth ( r 2 =0.34, P =0.08 and r 2 =0.10, P =0.2261) and root length density ( r 2 =0.28, P =0.1016 and r 2 =0.31, P =0.0896) in deep soil for primary and seminal roots, respectively ( Supplementary Fig.

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