Transpiration efficiency in crops of semi-dwarf and standard-height sunflower

Sadras, Víctor O.; Whitfield, D.M.; Connor, David J.

doi:10.1007/bf00190015

Cited by 42 publications

(24 citation statements)

References 25 publications

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“…Close associations between RUE and WUE were reported for sunflower and spring wheat (Sadras et al, 1991;Caviglia and Sadras, 2001). The relationships in Fig.…”

Section: Resource Productivity Capture and Use Efficiencies By Sole supporting

confidence: 60%

“…In single crops, water use efficiency (WUE DM ) is directly related to radiation use efficiency (RUE DM ) as affected by genotype and ontogeny in sunflower (Heliantus annuus L., Sadras et al, 1991) and nitrogen nutrition in wheat (Caviglia and Sadras, 2001). Key physiological and agronomic aspects of wheat-soybean double cropping and its sole crop components were widely investigated Sadras, 1999, 2002;Calviño et al, , 2003a.…”

Section: Introductionmentioning

confidence: 99%

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Intensification of agriculture in the south-eastern Pampas

Caviglia

Sadras

Andrade

2004

Field Crops Research

156

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“…Close associations between RUE and WUE were reported for sunflower and spring wheat (Sadras et al, 1991;Caviglia and Sadras, 2001). The relationships in Fig.…”

Section: Resource Productivity Capture and Use Efficiencies By Sole supporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Intensification of agriculture in the south-eastern Pampas

Caviglia

Sadras

Andrade

2004

Field Crops Research

156

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“…In specify, the simultaneous impact of deficit irrigation in water consumption and radiation interception mainly in treatment D 4 (pluvial = without irrigation) was more important in the first and second experiment than that in third experiment. If we took the entire three hypotheses detailed in Figure 1, 2 and 3, it can conclude that deficit irrigation presented an imperative consequence in the relation between PAR abs and water consumption.Our results are in agreement with this of Sadras et al, (1991) and Caviglia and Sadras, (2001). The later authors found significant relations between radiation use efficiency and water use efficiency for sunflower and spring wheat.…”

Section: Discussionsupporting

confidence: 93%

Does Deficit Irrigation Affect the Relation between Radiation Interception and Water Consumption for Durum Wheat (Triticum durum Desf)?

Rezig

M’hamed

Naceur

2015

EER

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Total Dray Matter (TDM), Photosynthetically Active Radiation Intercepted (PARabs), Water Consumption (WC), Water use-(WUE), Radiation use efficiency (RUE) and the relationship between Radiation Interception and Water Consumption for Durum Wheat were investigate under different irrigation amount (D 1 = 100 % ETc; D 2 = 70 % ETc; D 3 = 40 % ETc and D 4 = pluvial) and during three growing seasons (2005-2006, 2006-2007 and 2007-2008). Results showed that, the cumulative PAR abs decreased with deficit irrigation. In fact, D 1 treatment recorded the highest cumulative PAR abs and the lowest marked underD 4 treatment. Similarly, TDM and RUE were decreased with deficit irrigation. The highest RUE observed under the D 1 (from 1.32 to 1.43 g MJ -1 ) and the lowest under D 4 (from 1.17 to 1.29 g MJ -1 ). However WUE increased with deficit irrigation. The highest WUE were obtained under the D 4 (from 3 to 4 kg m -3 ) and the lowest were observed under D 1 (from 2.8 to 3.1 kg m -3 ). Significant linear relationship was found between cumulative PAR abs and cumulative water consumption with a high correlation coefficient (R 2 ) only under the two treatments D 1 and D 2 .

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“…This trait was likely to be associated with the highest total tuber sink strength in this cultivar. A positive association between organ sink size (analogous to sink strength), photosynthesis, and RUE has been shown for wheat (Triticum aestivum L.) (Blum et al, 1988) and sunflower (Helianthus annuus L.) (Sadras et al, 1991). Similar source-sink interactions have also been suggested for potato (Schapendonk et al, 1995;Tekalign and Hammes, 2005a).…”

Section: Discussionmentioning

confidence: 52%

An Explanation of Yield Differences in Three Potato Cultivars

et al. 2016

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A gronomy J our n al • Volume 10 8 , I ssue 4 • 2 016 P otato is a staple crop worldwide, ranking fourth aft er maize (Zea mays L.), rice (Oryza sativa L.), and wheat (Triticum aestivum L.). As potato consumption increases there is a need to understand the mechanisms that drive its yield. However, the origins of yield diff erences are rarely made clear in cultivar comparisons (Van Der Zaag and Doornbos, 1987) and breeding programs.Potato crop growth and tuber yields have been linked to the duration of the growth cycle, which depends on climate, cultivar, and crop management (Kooman et al., 1996a(Kooman et al., , 1996b. Th erefore, assuming optimum crop management, diff erences in tuber yield among potato cultivars can be explained by differences in accumulated intercepted radiation, the utilization coeffi cient of foliage followed by DM distribution within the plant (Van Der Zaag and Doornbos, 1987). Indeed, the amount of radiation intercepted by a crop and the RUE provide a useful basis for investigating yield variation (Monteith, 1977). From this concept, a simple model to express potato DM growth has been reported (Jamieson et al., 2004) as:where Y is the tuber yield, R o is the daily incident solar radiation received, R/R o is the daily fraction of R o which is intercepted by the canopy (R being the daily average radiation intercepted by the plant), and RUE is the overall photosynthetic effi ciency of the crop (i.e., the effi ciency of conversion of radiant to chemical potential energy). Th e HI is the fraction of the dry matter produced which is allocated to the tubers. Th e integration of these components over time (t; days) from crop emergence (em) allows the description of biomass accumulation in terms of plant development processes. Th is is a common approach used for potato yield analysis (Van Der Zaag and Doornbos, 1987;Spitters et al., 1989;Ellissèche and Hoogerndoorn, 1995) and simulation models of potato yield (Jamieson et al., 2004). Th e amount of radiation intercepted by the crops is reportedly the central component to explain ABSTRACTUnder ideal growing conditions, yield is the product of intercepted photosynthetically active radiation (PAR i ) and its conversion effi ciency to dry matter (radiation use effi ciency, RUE). For potato (Solanum tuberosum L.) the ability of the leaf to convert the PAR i into carbohydrates (source) and the storage capacity of the tubers (sink) aff ect the potential growth of individual tubers and therefore crop yield. Th is study describes these mechanisms for three commercial potato cultivars (Bondi, Fraser, and Russet Burbank) grown in non-limiting fi eld conditions. At fi nal harvest Bondi had the largest tuber yield and produced heavier but fewer tubers compared with Fraser and Russet Burbank. All crops had similar total accumulated radiation interception (R cum ), and yield diff erences were explained by the RUE which was highest for Bondi, lowest for Fraser, with Russet Burbank intermediate. Fraser had the lowest rate of canopy senescence, maintained the lowe...

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Transpiration efficiency in crops of semi-dwarf and standard-height sunflower

Cited by 42 publications

References 25 publications

Intensification of agriculture in the south-eastern Pampas

Intensification of agriculture in the south-eastern Pampas

Does Deficit Irrigation Affect the Relation between Radiation Interception and Water Consumption for Durum Wheat (Triticum durum Desf)?

An Explanation of Yield Differences in Three Potato Cultivars

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