Screening for lodging resistance in spring wheat breeding programmes

Kelbert, A. J.; Spaner, Dean; Briggs, K. G.; King, John L.

doi:10.1111/j.1439-0523.2004.00976.x

Cited by 40 publications

(46 citation statements)

References 16 publications

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“…Plant height appears to be the major contributor to lodging tolerance (Keller et al 1999;Kelbert et al 2004a). The severity of lodging in the short group was very low and no significant variation was observed for yield and lodging scores.…”

Section: Resultsmentioning

confidence: 99%

“…Lodging is often associated with yield loss, with the magnitude of loss dependent on cultivar, growth stage, and the severity of lodging (Fischer and Stapper 1987;Jedel and Helm 1991;Kelbert et al 2004a). Height reducing (Rht) genes are the major sources of lodging tolerance in wheat (Triticum aestivum L.).…”

Section: Mots Clésmentioning

confidence: 99%

“…To do so, a weighted plywood apparatus (Brrigs 1990;Kelbert et al 2004a) was dragged with a tractor lengthwise across the entire six-row plot. This initially resulted in complete flat- Mean Mg ha -1 (0-9 scale ± S e ) Tall 2.7 ± 0.2 3.7 ± 1.3 2.2 ± 1.0 4.0 ± 1.1 4.6 ± 1.1 Intermediate 3.3 ± 0.2 0.9 ± 0.9 0.4 ± 0.5 2.0 ± 1.1 2.9 ± 1.2 Short 3.1 ± 0.3 0.4 ± 0.6 0.3 ± 0.4 1.4 ± 0.7 2.4 ± 0.9 Overall 3.1 ± 0.2 1.4 ± 0.9 0.8 ± 0.7 2.4 ± 1.0 3.2 ± 1.…”

Section: Artificial Lodgingmentioning

confidence: 99%

“…For example, in organically managed wheat systems, a relatively taller plant with greater tillering capacity may potentially confer increased competitive ability (Spaner, unpublished data). Sources of lodging tolerance independent of height reducing genes may be of interest to plant breeders selecting for competitive ability within taller genotypes.In previous studies (Kelbert et al 2004a) we reported the artificial induction of lodging by dragging a weighted plywood apparatus over experimental wheat plots. This technique was originally proposed by Briggs (1990) as a screening tool for lodging tolerance.…”

mentioning

confidence: 99%

“…In previous studies (Kelbert et al 2004a) we reported the artificial induction of lodging by dragging a weighted plywood apparatus over experimental wheat plots. This technique was originally proposed by Briggs (1990) as a screening tool for lodging tolerance.…”

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confidence: 99%

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The relationship between lodging and plant height in a diverse wheat population

Navabi¹,

Iqbal²,

Strenzke³

et al. 2006

Can. J. Plant Sci.

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Navabi, A., Iqbal, M., Strenzke, K. and Spaner, D. 2006. The relationship between lodging and plant height in a diverse wheat population. Can. J. Plant Sci. 86: 723-726. We examined the genetic variation for lodging tolerance in different plant height groups, within a diverse population of wheat (Triticum aestivum L.) genotypes (n = 140). Lodging was artificially induced by dragging a weighted apparatus across plots twice during the season at early and late milk stages. Grain yield was negatively correlated with lodging, while lodging scores were positively correlated with plant height. Although plant height appeared to be the major contributor to lodging tolerance, some variation was also observed in taller plants. This suggests that genetic gain in lodging tolerance can be obtained, to some extent, independent of plant height.Key words: Plant height, lodging tolerance, Triticum aestivum L., CIMMYT, Canada Navabi, A., Iqbal, M., Strenzke, K. et Spaner, D. 2006. Lien entre la verse et la taille du plant dans un peuplement de blé mixte. Can. J. Plant Sci. 86: 723-726. Les auteurs ont examiné la variation génétique de la tolérance à la verse dans des groupes de taille différente au sein d'un peuplement de plusieurs génotypes (n = 140) de blé (Triticum aestivum L.). Ils ont induit artificiellement la verse en traînant un dispositif lesté de poids à deux reprises sur la parcelle, au début et à la fin du stade du grain laiteux. Le rendement grainier présente une corrélation négative avec la verse tandis que le degré de verse est positivement corrélé à la hauteur du plant. Bien que la taille du plant semble être le principal facteur concourant à la tolérance à la verse, on observe une certaine variation chez les plants les plus grands. On en déduit que la résistance à la verse pourrait être améliorée dans une certaine mesure par la génétique, peu importe la taille du plant. Mots clés:Taille du plant, tolérance à la verse, Triticum aestivum L., CIMMYT, Canada Lodging in cereals refers to the displacement of culms from an upright position. Lodging is often associated with yield loss, with the magnitude of loss dependent on cultivar, growth stage, and the severity of lodging (Fischer and Stapper 1987;Jedel and Helm 1991;Kelbert et al. 2004a). Height reducing (Rht) genes are the major sources of lodging tolerance in wheat (Triticum aestivum L.). However, reduced plant height may not always be suitable for all agro-econiches. For example, in organically managed wheat systems, a relatively taller plant with greater tillering capacity may potentially confer increased competitive ability (Spaner, unpublished data). Sources of lodging tolerance independent of height reducing genes may be of interest to plant breeders selecting for competitive ability within taller genotypes.In previous studies (Kelbert et al. 2004a) we reported the artificial induction of lodging by dragging a weighted plywood apparatus over experimental wheat plots. This technique was originally proposed by Briggs (1990) as a screening tool for lodging tol...

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Section: Resultsmentioning

confidence: 99%

Section: Mots Clésmentioning

confidence: 99%

Section: Artificial Lodgingmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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The relationship between lodging and plant height in a diverse wheat population

Navabi¹,

Iqbal²,

Strenzke³

et al. 2006

Can. J. Plant Sci.

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Strategies to reduce plant height in dual‐use intermediate wheatgrass cropping systems

2021

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Intermediate wheatgrass [IWG; Thinopyrum intermedium (Host) Barkworth & D.R. Dewey] is a perennial cereal and forage crop marketed for its grain, Kernza. Lodging, which is correlated with plant height, can reduce IWG grain yield. Our goal was to determine the effects of the plant growth regulator trinexapac-ethyl (TE) application rate; forage harvest timing; and N rate on IWG plant height, lodging, aboveground biomass, grain yield, and harvest index. The experiment was established in 2015 in southern Wisconsin using a population of IWG bred for increased grain yield. The experimental design was randomized complete blocks with three replications of a factorial arrangement of three factors: TE rate (0, 0.22, 0.66 kg a.i. ha −1 ), forage harvest timing (unharvested, summer, summer + fall, spring + summer + fall), and N rate (90 and 135 kg N ha −1 ). Responses were measured in the second (2017) and third (2018) production years of IWG. Lodging was not observed. No interactions among treatment factors were detected. Plant height was 6% lower, grain yield was 26% higher, and harvest index was 48% higher in the low TE rate treatment compared to non-treated, averaged across other factors. Harvesting forage in the spring + summer + fall reduced plant height by 7% compared to unharvested control but reduced grain yield by 11%. The high N rate increased plant height by 4% and grain yield by 26%.Using TE can be a viable strategy to reduce plant height and increase grain yield in IWG dual-use (grain and forage) production systems.Abbreviations: GDD, growing degree days; IWG, intermediate wheatgrass; TE, trinexapac-ethyl This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Selection based on the phenomenic approach and agronomic ideotic of white oat

Pradebon,

Carvalho,

Da Silva

et al. 2024

Agronomy Journal

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This work aimed to propose multivariate selection strategies reconciling the agronomic ideotype and vegetation indices to obtain genotypes with high tillering, early cycle, tolerant to lodging, and foliar diseases. The sowing of white oat lines was carried out on April 27, 2023, allocated in an experimental design of blocks augmented with interspersed controls. The regular treatments correspond to 593 lines of white oat and the common treatments were represented by the cultivars URS Olada, URS Altaneira, and IPR Artêmis arranged in four replications. The measurements of variables of agronomic interest took place in each experimental unit as follows: percentage of tillering, days to flowering, percentage of lodging, percentage of leaf rust, percentage of stem rust, and percentage of leaf spots. The phenomic analyses took place through flights carried out with a specialized drone, equipped with a 20 MP resolution camera and standard height (80 m). The best proposed indices were index for reducing the percentage of lodging with normalized green (NG), green–red ratio (IGR), soil color index (SCI), green leaf index (GLI), visible atmospheric resistant index (VARI), green leaf index 2 (GLI2), red–blue (RB), blue green pigment (BGI), normalized red–blue difference index (NRBDI), green–blue ratio, BIM, normalized green–blue difference index (NGBDI), and ExGR; index for reducing days to flowering with brightness index (BI), NRBDI, days to flowering (DF), gray (GRAY), IGR, average intensity (L), normalized red (NR), RGRI, SCI, BGI, BIM, GLI, NGBDI, and NG; and index for reducing the percentage of stem rust with NG, BI, Gray2, GLI2, RGRI, GLI, VARI, BGI, L, NR, RB, and coloration index. Only two lines were selected concomitantly with multivariate indices, line L167 (M5, SA) and L426 (M6, ETMS), that combine lodging tolerance and leaf rust genes.

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Screening for lodging resistance in spring wheat breeding programmes

Cited by 40 publications

References 16 publications

The relationship between lodging and plant height in a diverse wheat population

The relationship between lodging and plant height in a diverse wheat population

Strategies to reduce plant height in dual‐use intermediate wheatgrass cropping systems

Selection based on the phenomenic approach and agronomic ideotic of white oat

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