Varietal Difference in Lodging Resistance and Culm Characteristics of Wheat

Matsuyama, Hiromi; Shimazaki, Yumi; Ohshita, Yasuo; Watanabe, Yoshiaki

doi:10.1626/jcs.83.136

Cited by 5 publications

(7 citation statements)

References 10 publications

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“…We recorded internode elongation and strength, analysing each internode of the main stem and also of the tillers emerging from the first and second nodes of the main stem. This contrasts with most previous studies which analysed stems chosen at random (Zheng et al, 2017) or only the main stems (Matsuyama et al, 2014;Pinera-Chavez et al, 2016;Xiao et al, 2015).…”

Section: Introductioncontrasting

confidence: 67%

“…Lodging resistance is associated with lower internode length (Pinthus, 1973), higher internode dry weight per unit length (Pinera-Chavez et al, 2016;M. Zheng et al, 2017), higher lignin content (Matsuyama et al, 2014;M. Zheng et al, 2017) and lignin content per unit length (Zhang et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Light competition in wheat also increases lodging by decreasing the strength of the culm. We know that wheat culm strength depends on the lignin content of the lower internodes (Matsuyama et al, 2014). Also, that the lignin content of these internodes is decreased by high rates of basal N application (Chen et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Shifting timing of intensive nitrogen topdressing later to the stem-elongation phase reduced lower internodes length and lodging risk of wheat

Mizuta

Araki

Takahashi

2020

Plant Production Science

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Intensive nitrogen (N) application during stem elongation is effective in increasing potential yield but it also increases the risk of lodging. Unfortunately, the increased lodging more than offsets any associated gains from the increase in potential yield. We test the hypothesis that lodging is not induced directly by N application during stem elongation but by increased light competition in the resulting excessively dense canopy. Our results show that lodging was more severe in plants given N early (before stem elongation) compared with in plants where N fertilisation was given later (during stem elongation). When N was given early, the lengths of the lower internodes of the tillers were significantly greater than when N was given later. For the early N application, dry weight of the above-ground plant was 75% greater, leaf area index 66% greater and green area index 81% greater than for the later N application. This likely indicates much greater competition for light in the denser canopy with the early N application. Shading treatments applied during stem elongation resulted in the lower internodes being longer and lighter, than for unshaded plants. The results suggest that by shifting intensive N application before stem elongation to during stem elongation, canopy development and thus light competition are reduced, the basal internodes of the tillers are shorter and lodging is minimised.

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Section: Introductioncontrasting

confidence: 67%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Shifting timing of intensive nitrogen topdressing later to the stem-elongation phase reduced lower internodes length and lodging risk of wheat

Mizuta

Araki

Takahashi

2020

Plant Production Science

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“…The rice cultivar 'Leaf Star', for example, with excellent resistance to lodging has thick cortical fibre tissue (Ookawa et al, 2014). The concentrations and densities of lignin, celluloses and hemicellulose constituting the cell wall also influence culm strength (Kokubo et al, 1989;Li et al, 2003: Matsuyama et al, 2014Ookawa & Ishihara, 1993). It can be inferred that the seeding rate changed the canopy structure and affected not only internodal elongation but also thickening and accumulation of cell wall components.…”

Section: The Effects Of Seeding Rate On Culm Strengthmentioning

confidence: 99%

The effects of seeding rate on yield, lodging resistance and culm strength in wheat

Matsuyama

Ookawa

2019

Plant Production Science

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We compared the effects of four seeding rates, 60, 100, 140, and 180 seeds m −2 , on yield, lodging resistance and culm strength using two Japanese wheat cultivars Ayahikari and Iwainodaichi. With the decreasing seeding rate, maximum tiller number decreased, percentage of productive culms increased and spike number m −2 decreased, and the spikelet number per spike, percentage of fertile spikelets, grain number per spikelet and grain number per spike increased. Consequently, grain yield was not significantly affected. Lodging was not observed, but the lodging index was significantly affected by the seeding rate and was the highest in the plots sown at 180 seeds m −2. The bending moment at the breaking point and flexural rigidity of the basal internode with leaf sheaths were highest in the plots sown at 60 seeds m −2. In conclusion, the culm strength and stem lodging resistance increased with decreasing seeding rate. Section modulus and bending stress, which constitute the bending moment at the breaking point, and the moment of inertia area and Young's modulus, which represent the flexural rigidity, were highest in plots sown at 60 seeds m −2. Therefore, the seeding rate was considered to influence the culm morphology and functions of the cell wall components. The effects of the seeding rate on culm characteristics and lodging resistance did not differ between the two cultivars, and 'Ayahikari' had consistently stronger culms than 'Iwainodaichi'. We suggest that low seeding rates method would be suitable for heavily fertilized cultivation for both cultivar with high and low culm strength.

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“…Resistance indices were used to assess the impact of the mineral nutrition level, which considered the ratios of various morphometric indicators. The world scientific community uses a variety of calculated indicators (indices and coefficients) characterizing the lodging resistance of grain crops [13]. The most common is the Galchenko index, which shows the ratio of the straw length to the diameter of the first (second) internode.…”

Section: Resultsmentioning

confidence: 99%

Genetic resistance of cultivated oat and the influence of the mineral nutrition level on stem lodging in Western Siberia

2022

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The genetic resistance to stem lodging of cultivated oat of the Western Siberian selection with different levels of mineral nutrition in the conditions of the Northern Trans-Urals has been studied. The experimental scheme provided for three new varieties of intensive oat: Talisman, Otrada, Foma. Various levels of the agricultural background were created by applying mineral fertilizers that ensure the planned yield of 3.0, 4.0, 5.0 and 6.0 t/ha of grain. In the course of research, it was found that the Talisman variety has a tendency to lodging at the genetic level. The Otrada variety is able to withstand a yield of up to 5.0 t/ha of grain, Foma – at least 6.0 t/ha. It was revealed that the resistance to lodging has a negative correlation with the length of the upper internode (r=-0.7) and panicles (r=-0.8), as well as a positive correlation with the plant height (r= 0.8). Resistance to stem lodging by 34.3% depends on the level of mineral nutrition, 11.5% - on the genetics of the variety and 6.1% - on the growing season’s weather conditions.

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Varietal Difference in Lodging Resistance and Culm Characteristics of Wheat

Cited by 5 publications

References 10 publications

Shifting timing of intensive nitrogen topdressing later to the stem-elongation phase reduced lower internodes length and lodging risk of wheat

Shifting timing of intensive nitrogen topdressing later to the stem-elongation phase reduced lower internodes length and lodging risk of wheat

The effects of seeding rate on yield, lodging resistance and culm strength in wheat

Genetic resistance of cultivated oat and the influence of the mineral nutrition level on stem lodging in Western Siberia

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