Embryo-growth rate and duration in sunflower as affected by temperature

Chimenti, C.; Hall, A. J.; López, M Sol

doi:10.1016/s0378-4290(00)00135-0

Cited by 49 publications

(22 citation statements)

References 13 publications

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“…The effects of planting dates on yield and yield quality of sunflower have been primarily attributed to the variation in air temperature, amount of solar radiation and duration of photoperiod, which alter the timing and the duration of the crop growth stages. In turn, these factors have been found to affect the chronological time between floral initiation and seed filling stages of sunflower, which is considered as a critical period to affect yield and yield components (Cantagallo, Chimenti, & Hall, ; Chimenti & Hall, ; Chimenti, Hall, & Sol López, ; Flagella et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…It is reported that few days of high temperature and/or reduced radiation interception can significantly reduce seed filling (Cantagallo & Hall, ). Moreover, high temperature also shrinks the duration of the critical seed filling period, which reduces the total amount of intercepted radiation, ultimately decreasing HD and SH (Cantagallo et al., ; Chimenti & Hall, ; Chimenti et al., ). Conversely, long days during the critical seed filling period are reported to increase SH as a consequence of high radiation interception (Palmer & Steer, ).…”

Section: Discussionmentioning

confidence: 99%

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Response of confection sunflower (Helianthus annuus L.) grown in a semi‐arid environment to planting date and early termination of irrigation

Joshi

Heitholt

García

2017

J Agronomy Crop Science

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Adjustments on planting date and on the time to terminate irrigation may reduce agricultural water use. However, such management practices in regions with extreme weather conditions have the potential to negatively affect yield. A 3‐year (2012–2014) study was conducted on a clay‐loam soil in a cool, semi‐arid environment to (i) determine the response of confection sunflower to planting date and irrigation termination timing and (ii) identify the relative importance of yield components in irrigated confection sunflower across planting dates. Early May planting had considerable negative effects on all studied variables, except on the percentage of large seeds. The highest yield of total and large seeds was obtained from the late May plantings, averaging 3,777 and 3,379 kg/ha, respectively. None of the irrigation strategies affected the measured variables. However, the interaction between planting date and termination of irrigation significantly affected the 1,000‐seed weight. Our study revealed the last week of May as suitable planting period for confection sunflower in the semi‐arid north‐western region of Wyoming, USA, and that irrigation on heavy soils may be terminated as early as at R5.5 stage without a significant yield reduction. The path‐coefficient analysis indicated head diameter and the number of seeds per head as important traits that significantly influence the yield of confection sunflower across planting dates.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Response of confection sunflower (Helianthus annuus L.) grown in a semi‐arid environment to planting date and early termination of irrigation

Joshi

Heitholt

García

2017

J Agronomy Crop Science

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“…According to Rotundo and Westgate (2009), high temperature (>26°C) significantly decreased the oil concentration, while the protein concentration was less affected. High temperature is known to decrease the seed‐filling duration (Chimenti et al, 2001), which may be one of the possible reasons to explain the reduction in oil and protein content. However, high temperature may also improve the N remobilization (Triboi and Triboi‐Blondel, 2002), which may help explain why the protein content is less affected than oil content.…”

Section: Grain Qualitymentioning

confidence: 99%

Effect of Planting Date on Soybean Growth, Yield, and Grain Quality: Review

Wiatrak

2012

Agronomy Journal

101

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Delayed planting date and unfavorable environmental conditions have a negative effect on soybean [Glycine max (L.) Merr.] growth, development, and yield. Changes in photoperiod, temperature, and precipitation with delayed planting affect the duration of vegetative and reproductive stages, number of branches and pods, plant height, leaf area index (LAI), and normalized difference vegetation index (NDVI), and hence the grain yield. Delayed planting can also affect the soybean seed quality by changing the oil and protein content. Environmental factors like extremely high temperature and drought stress, which are often associated with delayed planting, have also a negative effect on plant development and yield. Compared to optimum air temperature, reduction in photosynthetic rate during heat stress decreases seed set and size, and seed yield. Drought stress during reproductive stages reduces carbon dioxide exchange rate (CER), photosynthesis, sugar production, and flow of metabolites to the expanding cells, which increases flower and pod abortion and decreases vegetative growth, duration of the seed filling stage, seed number, and seed size. Generally, the combined effect of photoperiod, temperature, and precipitation with delayed planting most likely contributes to decreased duration of vegetative and reproductive growth stages, reduced photosynthesis and plant growth, and therefore significant reduction in grain yield of soybean.

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“…Although it has been demonstrated that base temperature (T b , ºC) differs between processes (e.g. 1ºC for grain filling, Chimenti et al, 2001), adequate phenology predictions can be obtained assuming a unique base temperature (e.g. Villalobos et al, 1996; Aiken, 2005.…”

Section: Phenologymentioning

confidence: 99%

Sunflower yield and oil quality interactions and variability: Analysis through a simple simulation model

Irujo

Aguirrezábal

2007

Agricultural and Forest Meteorology

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Sunflower (Helianthus annuus L.) grain and oil quality are defined by grain weight and oil percentage, oil fatty acid composition and the amount of antioxidants. The aim of this work was to establish and validate a simple model, based on published relationships, which can estimate not only yield and its components, but also grain and oil quality aspects which are of relevance for industrial processes or human health. The model we developed provided good estimations of grain yield (similar to those of a more complex model) and oil quality from independent experiments. It explained known differences in potential yield and grain and oil quality between locations, in terms of differences in incident radiation, mean or minimum temperature. Simulations showed that recent climatic changes could have caused a decrease in sunflower yield and changes in oil quality. Our results suggest that at locations at lower latitudes, sunflower oil with high nutritious value and oxidative stability could compensate for relatively low yields, while at higher latitudes, highlinoleic acid oil production should be compatible with high yield potentials. Our model could facilitate the selection of the best location, sowing date or density for the production of sunflower oil with specific quality characteristics.

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Embryo-growth rate and duration in sunflower as affected by temperature

Cited by 49 publications

References 13 publications

Response of confection sunflower (Helianthus annuus L.) grown in a semi‐arid environment to planting date and early termination of irrigation

Response of confection sunflower (Helianthus annuus L.) grown in a semi‐arid environment to planting date and early termination of irrigation

Effect of Planting Date on Soybean Growth, Yield, and Grain Quality: Review

Sunflower yield and oil quality interactions and variability: Analysis through a simple simulation model

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