Deep Root Water Uptake Ability and Water Use Efficiency of Pearl Millet in Comparison to Other Millet Species

By W. Zegada‐Lizarazu, M. Iijima. 2005

109 citations recorded by the source corpus.

Abstract Pearl millet is better adapted to hot and semi-arid conditions than most other major cereals. The objective of this study was to compare the deep water uptake ability and water use efficiency (WUE) of pearl millet among millet species. First, the WUE of six millet species was evaluated in pots under waterlogging, well-watered (control), and drought conditions. Secondly, the water uptake from deep soil layers by pearl millet and barnyard millet, which showed the highest drought and waterlogging tolerance, respectively, was compared in long tubes which consisted of three parts (two loose soil layers separated by a hardpan and a Vaseline layer). Soil moisture was adjusted to well-watered and drought conditions in the upper (topsoil) layer, while the lower (deep) layer was always kept wet. WUE was significantly reduced in all millet species by waterlogging but not by drought. The ratio of WUE to the control condition indicated that pearl millet had the highest and lowest resistances to drought and waterlogging conditions, respectively, while barnyard millet was the most stable under both conditions. The deuterium concentration in xylem sap water, relative water uptake from deep soil layers, and water uptake efficiency of deep roots were significantly increased in barnyard millet but not in pearl millet by drought in topsoil layers. In conclusion, the drought resistance of pearl millet is explained by higher WUE but not by increased water uptake efficiency in deep soil layers as compared to barnyard millet, another drought-resistant millet species.

Subfields: Plant Science, Soil Science

View Paper: https://www.semanticscholar.org/paper/eda37fea23412e04f24d615dc731b2d0f7899575

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Plant Science

1. C. Holbrook
2. A. Patanothai
3. N. Vorasoot
4. P. Songsri
5. S. Jogloy
6. C. Akkasaeng

In Soil Science

1. C. Holbrook
2. A. Patanothai
3. N. Vorasoot
4. P. Songsri
5. S. Jogloy
6. C. Akkasaeng

Citations in the corpus

• Root Distribution of Drought‐Resistant Peanut Genotypes in Response to Drought (2008, background): “2003), pearl millet (Zegada-Lizarazu and Iijima 2005), chickpea (Kashiwagi et al.”