Aim: The study aimed to evaluate ten wheat cultivars along with 45 F1 under different environments to identify best suited environment for potential expression of grain yield and related traits under terminal heat stress. Methodology: Ten wheat cultivars and 45 F1 were evaluated under three different environments at Rajasthan Agricultural Research Institute, Durgapura, Jaipur (SKNAU, Jobner). The experiment was carried out in randomized block design with 3 replications and each plot had 2 rows for F1 and 4 rows for parents with 30×10 cm spacing. The parents of the crosses were selected on basis of their superiority in performance across diverse ecologies. Results: The results of present investigation revealed that first two principal components contributed to nearly 63 % of total variance that is grouped in two clusters. Genotype plus genotype by environment interaction view revealed top cultivars and hybrids under terminal heat stress conditions. AMMI biplot analysis indicated environment 1 and environment 2 as the best suited environments for potential expression of grain yield and related traits. The study identified potential donors, cultivars C306, Raj4079, Raj1482 and PBW396 for earliness and cultivarsCR43, CR20 and PBW590 for grain yield and related traits under terminal heat stress conditions. Interpretation: The grain yield can be improved by selecting for higher grain number, biomass and harvest index as revealed from their positive correlations. The presence of G×E interaction provides the opportunity to select for the stable genotypes for diverse ecologies. On other hand, environment specific genotypes can be targeted in befitting ecologies. AMMI and GGE biplot based stability analysis prove to be an efficient approach in testing the genotypes performance in multi-environment trials for selection of stable heat resilient cultivars. Key words: Genetic stability, Hybrids, Terminal heat stress, Wheat

In the current work, Ni-20Cr coatings have been developed for potential use in harsh environments of power plant boilers. A pre-synthesized Ni-20Cr nanocrystalline powder was deposited on T22 boiler steel using cold-spray process. The high temperature oxidation behavior of the coating was investigated under cyclic conditions at 900° C for 50 cycles, so as to understand the kinetics of oxidation. Moreover, high temperature erosion-corrosion (E-C) behaviour of the coating was ascertained under cyclic conditions in an actual boiler at 740 ± 10°C for 1500 hours. The oxidized and eroded-corroded samples were characterized using X-ray Diffraction (XRD), Scanning Electron Microscopy/Energy Dispersive Spectroscopy (SEM/EDS) analyses. The microhardness, oxidation and E-C data for the developed coating was compared with an earlier reported cold-spray Ni-20Cr coating, which was developed by using a commercially available micron-sized Ni-20Cr powder. The results showed that the developed coating was found to have 33% high microhardness in comparison with the microstructured Ni-20Cr coating. The oxidation and E-C rates of the steel were found to decrease significantly after the application of the developed coating by 89% and 68% respectively. Moreover the nanostructured coating outperformed the corresponding micro-structured Ni- 20Cr coating with regard to high temperature oxidation and E-C resistance to boiler steel by a significant fraction. The investigated coating was found to have oxidation protective oxides such as Cr2O3 and NiO in its oxide scale and was found to be spallation-free.