Avoiding lodging in irrigated spring wheat. II. Genetic variation of stem and root structural properties

Piñera-Chávez, Francisco J; Berry, Pete; Foulkes, J.; Molero, Gemma; Reynolds, M.P.

doi:10.1016/j.fcr.2016.06.007

Cited by 74 publications

(44 citation statements)

References 44 publications

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“…However, the current research demonstrates that shallow nodal root angles are also greatly positively associated with root system width. Another recent study demonstrated a substantial positive correlation between root plate spread and anchorage strength in the field (Piñera-Chavez et al , 2016). Nodal root number was also positively correlated with root system width in this study, and had substantial heritability.…”

Section: Discussionmentioning

confidence: 98%

Wheat shovelomics I: A field phenotyping approach for characterising the structure and function of root systems in tillering species

York

Slack

Bennett

et al. 2018

Preprint

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Highlight (max 30 words) 5A field phenotyping approach was developed for wheat to evaluate root phenes for the crown, 6 main shoot, and tillers of a mapping population, revealing substantial heritable variation. field and measuring root properties such as numbers, angles, densities and lengths. We report 1 3 a new shovelomics method that images the whole wheat root crown, then partitions it into the 1 4 main shoot and tillers for more intensive phenotyping. Root crowns were phenotyped using doubled-haploid lines. For the whole root crown, the main shoot, and tillers, root phenesincluding nodal root number, growth angle, length, and diameter were measured. Substantial latent constructs that imply pleiotropic genetic control of several related root phenes. 0Correlational analysis revealed that nodal root number and growth angle correlate among the 2 1 whole crown, main shoot, and tillers, indicating shared genetic control among those organs. 2We conclude that this phenomics approach will be useful for breeding ideotype root systems 2 3 in tillering species. 4Key words: Rooting, abiotic stress, Triticum aestivum L., fertilizer, water, nitrogen, soil, 2 5 resource acquisitionThe global population is expected to increase to nine billion people by 2050 which 2 8necessitates an increase in global food production of at least 60%, but likely as much as 2 9100% due to increased livestock production (Grafton et al., 2015). Wheat is a staple crop in 3 0 many countries, grown on 220 million hectares with a global yield of 729 million tonnes 3 1

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Section: Discussionmentioning

confidence: 98%

Wheat shovelomics I: A field phenotyping approach for characterising the structure and function of root systems in tillering species

York

Slack

Bennett

et al. 2018

Preprint

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“…1), Kováčik et al (2007) suggested that increases in planting density significantly increased the risk of lodging by decreasing the lignin content and its related enzymatic activities. Lodging can reduce grain yield from 7 to 80% in wheat (Piñera‐Chavez et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Plant height is highly dependent on seeding density and genotype (Marwat et al, 1999). Previous studies have reported genetic variation for length, diameter, wall width (Tripathi et al, 2003; Kelbert et al, 2004; Wiersma et al, 2011) and stem strength (Piñera‐Chavez, et al, 2016, Wiersma et al, 2011) of internodes and shoot height at the center of gravity (Tripathi et al, 2003) of spring wheat ( Triticum aestivum L.). However, there is a lack of understanding of the relationships among enzyme activities in stems, agronomic traits (plant height, number of stems per plant, number of branches per plant, number of capsules per plant, grain weight per plant, and 1000‐grain weight), and grain yield of oilseed flax.…”

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confidence: 99%

The Effects of Planting Density on Lodging Resistance, Related Enzyme Activities, and Grain Yield in Different Genotypes of Oilseed Flax

Gao

Jiang

et al. 2018

Crop Science

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Knowledge of planting density and lodging resistance is essential to developing effective cropping systems. This study determined (i) the lodging resistance of different genotypes of oilseed flax (Linum usitatissimum L.) under different planting densities, and (ii) the effect of density on lignin content and related enzyme activities in different genotypes in Northwest China. We hypothesized that (i) lignin content and related enzyme activities varied with different planting densities, and (ii) a planting density of 750 × 104 grains ha−1 increased the lignin content and related enzyme activities of stem tissues and improved lodging resistance. The characteristics of oilseed flax from three different cultivars—‘Dingya 23’(V1), ‘Jinya 10’(V2), and ‘Neiya 9’(V3)—were evaluated under different planting densities. Results indicated that increasing plant density increased the phenylalanine ammonia‐lyase (PAL) and tyrosine ammonia‐lyase (TAL) activities but decreased the 4‐coumarate:CoA ligase (4CL) activity and lignin content of a high‐lodging‐resistance cultivar. However, increasing plant density decreased the PAL and TAL activities but increased the 4CL and lignin content of a low‐lodging‐resistance cultivar. We conclude that plant density affected the plant lignin content by regulating the 4CL activity. Flax seed yield increases with density were mainly due to increased lignin content, bending strength, and regulated PAL, TAL, and 4CL activities. The study concluded that optimizing planting density could play an important role in crop lodging resistance and grain yields in the northwest of China.

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“…Here we propose the addition of canopy movement properties to this list, which may provide a simple way to extend and modify the light distribution in a canopy by using existing biomechanical variation in major crops that has not previously been considered in this context (e.g. (Wang and Li, 2006;Berry et al, 2007;Burgess et al, 2016;Piñera-Chavez et al, 2016b). Maximum canopy productivity could be achieved by altering plant mechanical properties to favour beneficial responsiveness in low wind, which is likely to be commonplace even if not continuous.…”

Section: Can We Improve Photosynthesis and Yield?mentioning

confidence: 99%

A canopy conundrum: can wind-induced movement help to increase crop productivity by relieving photosynthetic limitations?

Burgess

Gibbs

Murchie

2019

Journal of Experimental Botany

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Avoiding lodging in irrigated spring wheat. II. Genetic variation of stem and root structural properties

Cited by 74 publications

References 44 publications

Wheat shovelomics I: A field phenotyping approach for characterising the structure and function of root systems in tillering species

Wheat shovelomics I: A field phenotyping approach for characterising the structure and function of root systems in tillering species

The Effects of Planting Density on Lodging Resistance, Related Enzyme Activities, and Grain Yield in Different Genotypes of Oilseed Flax

A canopy conundrum: can wind-induced movement help to increase crop productivity by relieving photosynthetic limitations?

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