000 02253nam a22003017a 4500
001 G97899
003 MX-TxCIM
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040 _aMX-TxCIM
090 _aCIS-7121
100 1 _91906
_aSilva-PĂ©rez, V.
_uComBio2012; Adelaide (Australia); 23-27 Sep 2012
245 0 0 _aHigh-throughput screening for photosynthetic efficiency and capacity in wheat
260 _c2012
300 _a1 page
500 _aAbstract only
520 _aA worldwide challenge is to increase yield potential in wheat to address global food demand. One way to improve yield is to increase crop biomass by improving photosynthesis, the main process whereby plants obtain the energy and CO2 required for biomass production. An important technique that helps to understand plant photosynthetic performance is the analysis of gas exchange with a portable photosynthesis system (for example LICOR LI-6400XT). Using a modelling approach and gas exchange measurements we can extract valuable information such as Rubisco amount and kinetics and electron transport rate to analyse photosynthetic efficiency and capacity in plants. However, this method is not very useful in high-throughput screening as measurements take considerable time. This research seeks to develop and validate new tools to screen for superior photosynthetic performance among a broad range of wheat germplasm. One approach has been to compare gas exchange measurements and destructive analysis with leaf spectral reflectance and absorbance, measured using SPAD and the ASD Field Spec 3 spectro-radiometer. Here we report on the potential of spectral reflectance to rapidly screen for variation in photosynthetic parameters in a set of 16 wheat genotypes grown in the glasshouse in Canberra, Australia. In addition, we are analysing the mechanisms underlying the variability in photosynthesis among these genotypes.
536 _aGlobal Wheat Program
546 _aEnglish
593 _aLucia Segura
594 _aINT1511
595 _aCSC
700 1 _aCondon, T.,
_ecoaut.
_91908
700 1 _aEvans, J.,
_ecoaut.
700 1 _aFurbank, R.,
_ecoaut.
_91909
700 1 _aReynolds, M.P.
_gGlobal Wheat Program
_8INT1511
_9831
942 _cPRO
999 _c8576
_d8576