Natural variation in photosynthetic capacity, growth, and yield in 64 field-grown wheat genotypes

Driever, Steven M.; Lawson, Tracy; Andralojc, P. J.; Raines, Christine A.; Parry, M. A. J.

doi:10.1093/jxb/eru253

Cited by 221 publications

(256 citation statements)

References 60 publications

(89 reference statements)

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“…Differential hybrid performance for gas exchange WUE at normal densities and positive correlation with PYE was also encouraging. Driever et al (2014) suggested that natural variation in photosynthetic capacity is a currently unexploited genetic resource and could be used for potential crop improvement (Lawson and Blatt, 2014;Tardieu et al, 2014;Ge et al, 2012). Synchronization of pollen and silk emergence is presumably important under water stress conditions; thus, the negative relationship of PYE with ASI also supports this.…”

Section: Discussionmentioning

confidence: 99%

Improved Plant Yield Efficiency is Essential for Maize Rainfed Production

et al. 2015

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Plant yield e ciency re ects the single-plant yield at low density that precludes interplant interference for resources. e role of plant yield e ciency in adaptation to water de cit was investigated in maize (Zea mays L.). Also investigated was whether yield of space-planted environments is transferable to densely seeded situations. Further, the correlation and genotype by environment (G × E) interaction of spaced and densely seeded plots were investigated. irty-one lines and 31 crosses among them were tested in three locations under dense stand and the ultra low density of 0.74 plants m -2 as well as in normal and de cit irrigation treatments. e dense stand was 4.44 plants m -2 in the water de cit regime and 6.67 plants m -2 (lines) and 7.84 plants m -2 (hybrids) in the normal water treatment. Hybrids of greater plant yield e ciency were less sensitive to water shortage. Among four hybrids yielding the same at normally irrigated dense stand (11.50 Mg ha -1 ), yield loss due to water shortage was 46% for that of the lowest plant yield e ciency (645 g plant -1 ) and 17% for that of the highest plant yield e ciency (880 g plant -1 ). Correlations between hybrid plant yield e ciency and gas exchange water-use e ciency in dense stand were signi cant. e low density ensured G × E interaction in the quantitative aspect only and thus was of higher heritability, placing emphasis on parental yield per se. Plant yield e ciency is a key element of hybrid ability to withstand water shortage and cope with environmental heterogeneity.Supplemental material available online. I.S. Tokatlidis, C. Tzantarmas, and A. Kargiotidou, Dep. of Agricultural Development, Democritus Univ. of Th race, Orestiada, 68200, Greece; C. Dordas, C. Pankou, F. Gekas, E. Ninou, I. Mylonas, and A. Lithourgidis, School of Agriculture, Aristotle Univ. of Th essaloniki, Th essaloniki, 54124, Greece; F. Papathanasiou, I. Papadopoulos, J.K. Petrevska, and I. Sistanis, Dep. of Agricultural Technology, Technological Educational Institute of Western Macedonia, Florina, 53100, Greece. Received 22 Nov. 2014. Accepted 1 Feb. 2015. *Corresponding author (itokatl@agro.duth.gr; itokatl@hotmail.com).Abbreviations: A, assimilation rate; ASI, anthesis-silking interval; G ´ E, genotype by environment interaction; HI, harvest index; PYE, plant yield effi ciency; T, transpiration; WUE, water-use effi ciency.Ability of a cultivar to tolerate crowding but also perform well at the single-plant level has been asserted to be a determinant element to its crop yield potential (Yan and Wallace, 1995;Fasoula and Tokatlidis, 2012). However, in maize yield more improvement has resulted from improving tolerance to high plant population densities rather than single-plant performance; the per plant yield under minimal competition for light, water, and nutrients remained unchanged (Tollenaar and Lee, 2002;Duvick, 2005). Transition to higher populations in combination with stagnation in yield capacity of individual plants resulted in hybrids characterized as density-dependent (Fas...

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Section: Discussionmentioning

confidence: 99%

Improved Plant Yield Efficiency is Essential for Maize Rainfed Production

et al. 2015

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“…Plant harvest and flag leaf preparation was carried out according to the methodology described by [27]. Leaf gas exchange parameters were measured at an ambient CO 2 concentration of 400 µmol CO 2 µmol air −1 ; light levels (Photosynthetic Photon Flux Density, PPFD) of 1800, 1000, 500, 250, and 100 µmol photons m −2 s −1 ; a vapour pressure deficit of 0.9 kPa; and a block temperature of 20 • C. Maximum net photosynthesis (Amax) was measured at 1200 µmol CO 2 µmol air −1 and 1800 µmol photons m −2 s −1 .…”

Section: Phenotypingmentioning

confidence: 99%

“…However, phenotyping leaf gas-exchange traits in detail for large populations under field-grown conditions can be challenging, given the length of time taken to perform the measurements and the plant responses to climatic conditions and circadian rhythms. In the current work, the methodology proposed by [27] contributed to standardizing measuring conditions and allowed a reliable method to assess gas-exchange traits in field grown plants. Despite the improved methodology, measuring gas-exchange at the leaf level, using infra-red gas analysers (IRGAs), is still a time-consuming process.…”

Section: Canopy Vs Leaf Photosynthesismentioning

confidence: 99%

Dissecting Wheat Grain Yield Drivers in a Mapping Population in the UK

et al. 2018

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Improving crop yields arises as a solution to ensure food security in the future scenarios of a growing world population, changes in food consumption patterns, climate change, and limitations on resources allocated to agriculture. Defining traits that can be reliable cornerstones to yield improvement and understanding of their interaction and influence on yield formation is an important part of ensuring the success of breeding programs for high yields. Traits that can drive yield increases, such as light interception and conversion efficiency, as well as carbon assimilation and allocation, were intensively phenotyped in a double-haploid wheat mapping population grown under field conditions in the UK. Traits were analysed for their correlation to yield, genetic variation, and broad-sense heritability. Canopy cover and reflectance, biomass production, and allocation to stems and leaves, as well as flag leaf photosynthesis at a range of light levels measured pre-and post-anthesis correlated with plant productivity and contributed to explaining different strategies of wheat lines to attain high grain yields. This research mapped multiple traits related to light conversion into biomass. The findings highlight the need to phenotype traits throughout the growing season and support the approach of targeting photosynthesis and its components as traits for breeding high yielding wheat.

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“…Moreover, another study reported that large LA (flag leaf) in two contrasting barley populations resulted in higher grain yield because of higher photosynthetic rates under field conditions [19]. LA and its position in the canopy have an effect on the relationship between cereal growth, yield, and photosynthesis [20] and maximizing photosynthetic rate could be achieved by expanding LA in rice and wheat [21,22]. Manipulating LA to increase grain yield would be beneficial for future breeding programs [13,23]; however, LA manipulation in barley did not succeed because of low heritability which did not permit effective genetic manipulation.…”

Section: Introductionmentioning

confidence: 99%

Barley Leaf Area and Leaf Growth Rates Are Maximized during the Pre-Anthesis Phase

Alqudah

Schnurbusch

2015

Agronomy

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Leaf developmental traits are an important component of crop breeding in small-grain cereals. Surprisingly, little is known about the genetic basis for the differences in barley (Hordeum vulgare L.) leaf development. The two barley row-type classes, i.e., two-and six-rowed, show clear-cut differences in leaf development. To quantify these differences and to measure the genetic component of the phenotypic variance for the leaf developmental differences in both row-type classes we investigated 32 representative spring barley accessions (14 two-and 18 six-rowed accessions) under three independent growth conditions. Leaf mass area is lower in plants grown under greenhouse (GH) conditions due to fewer, smaller, and lighter leaf blades per main culm compared to pot-and soil-grown field plants. Larger and heavier leaf blades of six-rowed barley correlate with higher main culm spike grain yield, spike dry weight, and harvest index; however, smaller leaf area (LA) in two-rowed barley can be attributed to more spikes, tillers, and biological yield (aboveground parts). In general, leaf growth rate was significantly higher between awn primordium and tipping stages. Moderate to very high broad-sense heritabilities (0.67-0.90) were found under all growth conditions, indicating that these traits are predominantly genetically controlled. In addition, our data suggests that GH conditions are suitable for studying leaf developmental traits. Our results also demonstrated that LA impacts single plant yield and can be reconsidered in future breeding programs. Six-rowed spike 1 (Vrs1) is the major determinate of barley row-types, the differences in leaf development between OPEN ACCESSAgronomy 2015, 5 108 two-and six-rowed barleys may be attributed to the regulation of Vrs1 in these two classes, which needs further testing.

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Natural variation in photosynthetic capacity, growth, and yield in 64 field-grown wheat genotypes

Abstract: SummarySignificant variation in photosynthesis and growth in 64 wheat cultivars was explained by differences in photosynthetic capacity, operation and CO2 diffusion. Natural variation in photosynthesis is an underutilized resource for potential crop improvement.

Cited by 221 publications

References 60 publications

Improved Plant Yield Efficiency is Essential for Maize Rainfed Production

Improved Plant Yield Efficiency is Essential for Maize Rainfed Production

Dissecting Wheat Grain Yield Drivers in a Mapping Population in the UK

Barley Leaf Area and Leaf Growth Rates Are Maximized during the Pre-Anthesis Phase

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