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Cultivar replacement increases water use efficiency in foxtail millet in Shaanxi Province, China by Jiakun Yan; Ningning Zhang; Furen Kang; Jianwu Wang; Xiaolin Wang is a Agricultural and Biological Sciences article available to read on EtoBox.

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Cultivar replacement-induced genetic improvement is considered an important factor in enhancing crop grain yield. However, the effect of cultivar replacement of foxtail millet, an important crop in arid and semi-arid regions, on grain yield and drought resistance has rarely been considered. In the present study, we grew five millet cultivars, representative of widely cultivated varieties released from the 1950s to the 2010s in Shaanxi Province, China, in an open rainout shelter (closed during rain events) under two contrasting water treatments (35 ± 5% field water capacity (FWC), and 75 ± 5% FWC) with an aim to detect yield-related parameters, biomass accumulation, water use efficiency (WUE), and plant water-related indices. The millet yield increased with cultivar replacement under normal water conditions, whereas this increase was eliminated under water stress conditions. However, WUE significantly improved under both water conditions over a decade. Correlation analysis indicated that grain yield was significantly affected by biomass, root dry weight at the flowering stage, leaf water potential, whole-plant hydraulic conductivity, root exudation, and leaf gas parameters. WUE had

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Author

Jiakun Yan; Ningning Zhang; Furen Kang; Jianwu Wang; Xiaolin Wang

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)