M. Esposito

PO-0839: Synthetic diamond detector for CyberKnife beam output measurements: a multi-site study

Failing pass rates did not correlate between Mobius3D and Octavius measurements (CI = -0.2). The ITVmean difference between Pinnacle TPS and Mobius3D is used to evaluate the target coverage. The mean difference between Pinnacle TPS and Mobius3D is 0.6% (SD = 1.4%). Conclusions: There is no correlation between the results of Mobius3D and the Octavius measurements, which makes it probable that the deviation is in the verification tool rather than in the TPS. About 90% of the treatment plans pass the set criteria. With no need of machine time and an automated workflow Mobius3D is also for VMAT lung SBRT a highly efficient QA tool for treatment plan verification.

Comparison of morphological and molecular data for pea (Pisum sativum) in low and high yielding environments.

Abstract Genotypes by year interactions are considered to be among the major factors limiting response to selection. The objectives of this study were to estimate the heritability via variance components and genotype × year interactions for different traits determining the consensus between morphological and molecular data under two environmental conditions. Forty pea accessions were evaluated during 2005, a year with no temperature or rainfall stress, and 2006, a stress year. Morphologic, productive, and sequence‐related amplified polymorphism (SRAP) data were collected. Phenotypic and genotypic variances were determined and heritability estimated. One hundred and sixty‐two polymorphic SRAP bands were scored. Regressions between morphological and SRAP data were conducted. In a stressful year the correlation between SRAP and morphological data was higher than in a non‐stressed season (r = 0.72 versus r = 0.55). The results suggest that exposure to combinations of environmental stresses may increase expression of genetic variability for productive traits.