Grain Filling Mechanisms in Two Wheat Cultivars, Haruyutaka and Daichinominori, grown in Western Japan and in Hokkaido

Takahashi, Tadashi; Jinno, Hiromitsu; Senju, Kazuma; Kawata, Yoshimasa; Zhang, Li; Araki, Hideki

doi:10.1626/pps.13.156

Cited by 8 publications

(2 citation statements)

References 16 publications

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“…in adjacent areas of eastern Hokkaido. Significant effect of rainfall in the pre-harvest period during mid-to-late July (Figure 4(g) and (h)) indicated reduced wheat yield due to sprouting (Hossain et al, 2010). The rainfall effect for a limited period suggested that, rather than rainfall, the air temperature and sunshine duration during ripening period contributed to wheat productivity.…”

Section: Effects Of Temperature or Sunshine Duration On Yieldmentioning

confidence: 98%

Sensitivity of wheat yield to temperature changes with regional sunlight characteristics in eastern Hokkaido

Shimoda

Hamasaki

Hirota

et al. 2015

Intl Journal of Climatology

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Air temperature and sunshine duration for agricultural fields were extracted from 1-km-resolution weather data, and their relationship with winter wheat yield was compared for the adjacent Tokachi and Okhotsk regions of eastern Hokkaido, Japan. Major climatic drivers of winter wheat yield were air temperature during spring and grain-filling period in Tokachi, and sunshine duration during grain-filling period in Okhotsk. The regional difference in the sensitivity of yield to air temperature is attributed to variations in sunshine duration during grain-filling period. In Tokachi, a shorter grain-filling period limits the cumulative sunlight available to plants, because sunshine duration declines from late June to late July. In Okhotsk, yields of winter wheat were attributed to receiving adequate sunlight, although the growth period was curtailed by higher air temperature. We found that different climatic drivers affected winter wheat yield even in adjacent regions. The sensitivity of winter wheat yield to temperature can be determined by a threshold of 4.5 h daily sunshine duration regardless of region. Short sunshine duration during the grain-filling period exacerbated the sensitivity of wheat yield to temperature. Early summer in Okhotsk is characterized by sunnier weather than in Tokachi due to foehn, with respect to the southerly winds. Then, southerly wind was associated with significantly longer sunshine duration in Okhotsk. Regional cloud development affects sunshine duration as the climatic driver of wheat yield.

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Section: Effects Of Temperature or Sunshine Duration On Yieldmentioning

confidence: 98%

Sensitivity of wheat yield to temperature changes with regional sunlight characteristics in eastern Hokkaido

Shimoda

Hamasaki

Hirota

et al. 2015

Intl Journal of Climatology

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“…The assimilate for grain filling comes from current assimilation (and subsequent direct translocation to grains) and storage (reserve) pools in vegetative plant parts, especially in the culms (Schnyder, 1993). Watersoluble carbohydrates (WSCs) are considered as the main culm reserves, which may accumulate prior to anthesis and during the initial period of grain filling; and subsequently, they remobilize to developing grains (Hossain et al, 2009(Hossain et al, , 2010(Hossain et al, , 2011. Drought stress induces early leaf senescence which reduces or restricts the current assimilation (Ehdaie et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Screening of barley genotypes for drought tolerance based on culm reserves contribution to grain yield

Karim¹,

Islam²,

Rana³

et al. 2018

J Bangladesh Agric Univ

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Grain filling determines the grain weight, a major component of grain yield in cereals. Grain filling in barley depends on current assimilation and culm reserves. A pot experiment was conducted at the Grilled House, Department of Crop Botany, Bangladesh Agricultural University, Mymensingh during October 2015-May 2016 to study the grain filling patterns and the contributions of culm reserves to grain yield under drought stress. The experiment consisted of two factors-barley cultivars (six cultivars) and drought stress treatments (control and drought stress). Drought stress was imposed by limiting the irrigation during grain filling period. The tillers were sampled at anthesis, milk-ripe and maturity to determine the changes in dry weights of different parts, viz., leaf lamina, culm with sheath, spikes, and grains; and to examine the contribution of culm reserves to grain yield. The result in this experiment revealed that the grain yield was reduced by 5-25% due to drought stress. The reduction in grain yield was attributable to reduce number of grains per spike and lighter grain weight due to the stress. Drought stress drastically reduced the grain filling duration by about 30% and the stress induced early leaf senescence. Photosynthesis rate and leaf greenness were also reduced in stress. The stress altered the contribution of culm reserves, water soluble carbohydrates (WSCs) in culms to grains. At milk ripe stage, accumulation reached its peak. It accumulated 29.0 to 70.0 mg and from 15.8 to 40.6 mg culm −1 in control and stressed plants, respectively. The residual culm WSCs ranged from 3.5 to 11.2 mg and 1.0 to 3.5 mg culm −1 under control and stress conditions, respectively. The highest contribution of culm WSCs to grain yield was observed in BARI barley2 and the lowest was in BARI barley5 both in control and stress condition.. Among the cultivars studied, BARI barley2 produced higher yield with the higher contribution of culm reserves to grain yield under the drought stress.

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Abiotic Factors Affect Plant Growth

Kobata

2024

Responses of Plants to Soil Flooding

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Grain Filling Mechanisms in Two Wheat Cultivars, Haruyutaka and Daichinominori, grown in Western Japan and in Hokkaido

Cited by 8 publications

References 16 publications

Sensitivity of wheat yield to temperature changes with regional sunlight characteristics in eastern Hokkaido

Sensitivity of wheat yield to temperature changes with regional sunlight characteristics in eastern Hokkaido

Screening of barley genotypes for drought tolerance based on culm reserves contribution to grain yield

Abiotic Factors Affect Plant Growth

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