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Simultaneous effects of leaf irradiance and soil moisture on growth and root system architecture of novel wheat genotypes: implications for phenotyping.

Nagel KA, Bonnett D, Furbank R, Walter A, Schurr U, Watt M - J. Exp. Bot. (2015)

Bottom Line: In contrast, the other genotype showed much less plasticity and responsiveness to upper moist soil, but maintained deeper penetration of roots into the dry layer.The sum of shoot and root responses was greater when treated simultaneously to low light and low soil water, compared to each treatment alone, suggesting the value of whole plant phenotyping in response to multiple conditions for agronomic improvement.The results suggest that canopy management for increased irradiation of leaves would encourage root growth into deeper drier soil, and that genetic variation within closely related breeding lines may exist to favour surface root growth in response to irrigation or in-season rainfall.

View Article: PubMed Central - PubMed

Affiliation: CSIRO Plant Industry, GPO Box 1600, Canberra, ACT, 2601, Australia Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany k.nagel@fz-juelich.de.

No MeSH data available.


Related in: MedlinePlus

Root and leaf development (A, C, D) and root growth partitioning in different soil layers (B) of VJ 10 and VJ 30 wheat plants 20 days after germination under control conditions (moderate light and well-watered). Ratio between the root length in top or bottom soil layer and the total visible root length, respectively (mean value ±SE, n = 4). *Significant differences between the genotypes (P < 0.05).
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Figure 8: Root and leaf development (A, C, D) and root growth partitioning in different soil layers (B) of VJ 10 and VJ 30 wheat plants 20 days after germination under control conditions (moderate light and well-watered). Ratio between the root length in top or bottom soil layer and the total visible root length, respectively (mean value ±SE, n = 4). *Significant differences between the genotypes (P < 0.05).

Mentions: The novel wheat genotype VJ 30 produced almost the same total root length under control conditions as described in the analyses above for genotype VJ 10 (Fig. 8A), but genotypes differed in their partitioning of total root length (Fig. 8B). VJ 10 produced a relatively higher amount of roots in deeper soil layers, while VJ 30 produced a relatively higher amount of roots in top soil layers (Fig. 8B).


Simultaneous effects of leaf irradiance and soil moisture on growth and root system architecture of novel wheat genotypes: implications for phenotyping.

Nagel KA, Bonnett D, Furbank R, Walter A, Schurr U, Watt M - J. Exp. Bot. (2015)

Root and leaf development (A, C, D) and root growth partitioning in different soil layers (B) of VJ 10 and VJ 30 wheat plants 20 days after germination under control conditions (moderate light and well-watered). Ratio between the root length in top or bottom soil layer and the total visible root length, respectively (mean value ±SE, n = 4). *Significant differences between the genotypes (P < 0.05).
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4585422&req=5

Figure 8: Root and leaf development (A, C, D) and root growth partitioning in different soil layers (B) of VJ 10 and VJ 30 wheat plants 20 days after germination under control conditions (moderate light and well-watered). Ratio between the root length in top or bottom soil layer and the total visible root length, respectively (mean value ±SE, n = 4). *Significant differences between the genotypes (P < 0.05).
Mentions: The novel wheat genotype VJ 30 produced almost the same total root length under control conditions as described in the analyses above for genotype VJ 10 (Fig. 8A), but genotypes differed in their partitioning of total root length (Fig. 8B). VJ 10 produced a relatively higher amount of roots in deeper soil layers, while VJ 30 produced a relatively higher amount of roots in top soil layers (Fig. 8B).

Bottom Line: In contrast, the other genotype showed much less plasticity and responsiveness to upper moist soil, but maintained deeper penetration of roots into the dry layer.The sum of shoot and root responses was greater when treated simultaneously to low light and low soil water, compared to each treatment alone, suggesting the value of whole plant phenotyping in response to multiple conditions for agronomic improvement.The results suggest that canopy management for increased irradiation of leaves would encourage root growth into deeper drier soil, and that genetic variation within closely related breeding lines may exist to favour surface root growth in response to irrigation or in-season rainfall.

View Article: PubMed Central - PubMed

Affiliation: CSIRO Plant Industry, GPO Box 1600, Canberra, ACT, 2601, Australia Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany k.nagel@fz-juelich.de.

No MeSH data available.


Related in: MedlinePlus