The effect of crown rot disease on the carbon and nitrogen content in plant tissue, photosynthesis, stem and leaf pressure and biomass in bread wheat in field

Full description

Three crown rot in wheat resistance field trials examining crown rot disease development, biomass, stem water pressure and carbon and nitrogen content in plus and minus Fusarium pseudograminearum inoculated bread wheat. Field trials were conducted at the Wellcamp Research Farm, Wellcamp, QLD in 2016, 2017 and 2018. Fusarium pseudograminearum colonised millet inoculum was applied into the furrow at planting. The 2016 and 2017 field trial included 12 bread wheat genotypes and the 2018 experiment included 6 bread wheat genotypes. Data was collected at flowering and maturity stages of plant development. Data collected included growth stage according to Zadoks, number of plants per plot, shoot length, tiller number per plant, head number per plant, number of disease tillers per plant, % of diseased tillers per plant, the length of lesion on each of the main stem and primary stems, disease severity averaged across the main and primary stems, leaf dry weight, stem dry weight, head dry weight, total dry biomass, photosynthesis, stomatal conductance, intercellular CO2, transpiration, leaf area, area for gas exchange, leaf pressure, stem pressure, head, leaf and stem carbon content and head, leaf and stem nitrogen content and total carbon and nitrogen content of plant. Data recorded on paper and transferred to Excel spreadsheets. One file "Abdulsada et al 2024c (unpublished).xls" contains data from all three field trials, with separate sheets for flowering and maturity data. Leaf pressure measured using PMS Instrument Co. pressure bomb (model 1000, USA). Carbon and nitrogen content determined using LECO CN628 elemental analyser (LECO, St. Joseph, MI, USA). Photosynthesis measurements using a portable photosynthesis system (LI-6400; LICOR).