000			02530nam a22003137a 4500
001			G98677
003			MX-TxCIM
005			20211006082022.0
008			121211s ||||f| 0 p|p||0|| |
040			_aMX-TxCIM
090			_aCIS-7512
100	1		_aThompson, S.M. _uWater, Food, Energy, and Innovation for a Sustainable World: ASA, CSSA, and SSSA International Annual Meetings; Florida (USA); 3-6 Nov 2013
245	0	0	_aEstimating wheat root biomass using ground penetrating radar
260			_c2013
300			_a1 page
500			_aAbstract only
520			_aIn response to predicted climate change, crop scientists have increased their efforts to adapt crops to heat and drought stressed environments through breeding. Increasing root biomass is one such trait; roots permit access to water at deeper soil profiles and aid in balancing evaporative demand at high vapor pressure deficit. However, direct selection for roots is not yet feasible at a breeding scale due to the high cost and low throughput of current methodologies. Ground penetrating radar (GPR) is a remote sensing technology that has been successfully used in evaluation of coarse tree root biomass. Incorporating GPR into current crop phenotyping methodologies could potentially provide a long awaited solution to high throughput phenotyping for roots under realistic field conditions. Here, the utility of using GPR to estimate root biomass of wheat was evaluated. Using a Geophysical Survey System Incorporated SIR-20 GPR, a replicated field trial of spring wheat (Triticum spp.) genotypes with differing aboveground physiology, was agronomically evaluated then correlated with GPR returned signal. Plants were grown in field breeding conditions under heat stress in vertisol type soils. GPR profiles were collected at 40 cm intervals, using a signal frequency of 1.6 GHz. Spatial variation within the trial was determined and considered using agronomic and GPR data. Three-dimensional data reconstruction and analysis were rendered using GPR-SLICE v7.0 software. An overview of issues and pitfalls in experimental design of GPR studies will be discussed.
536			_aGlobal Wheat Program
546			_aEnglish
593			_aLucia Segura
594			_aINT3189|INT1511
595			_aCSC
700	1		_aGoodman, D., _ecoaut.
700	1		_aHays, D.B., _ecoaut.
700	1		_aIbrahim, A.M.H., _ecoaut.
700	1		_aReynolds, M.P. _gGlobal Wheat Program _8INT1511 _9831
700	1		_9898 _aCossani, C.M. _gGlobal Wheat Program _8INT3189
942			_cPRO
999			_c8744 _d8744