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Genotype, environment and their interactions are important determinant of crop phenotypes. In present study, oat genotypes including advanced lines (candidate varieties), approved cultivars, obsolete cultivars and germplasm accessions were evaluated at three sites under terminal phase heat stress to study the response of heat resistant elite advanced oat lines. Genotype + Genotype × Environment was used to select better genotype across three experimental sites. Advanced lines such as "Sgd-1", "Sgd-oat-2011" and "Fsd-oat" were selected for better yield under the terminal heat stress which had better green fodder yield (GFY) and also showed stable performance when compared at three locations. These advanced lines provided a yield advantage of 10% when compared with standard checks under heat stress. Among the yield components, plant height (PH) had positive association with GFY at all locations and this trait may be prioritized for the selection of high yielding genotypes. "S-2000" showed better performance for leaf area, "Sgd-oat-2011" and "CK-1" had been stable for tiller number and "Fsd-Oat" showed stable performance for stem thickness at all three locations. The results showed that candidate variety "Sgd-1" found to be superior cultivar for general cultivation due to its higher GFY, tiller number and PH. Moreover, Sgd-1 was heat tolerant cultivar and can be recommended for general cultivation subjected to terminal phase heat stress. [ABSTRACT FROM AUTHOR]

Some epidemiological aspects and pathological alterations particularly an uncommon liver (peliosis hepatis) in association with chronic pulmonary tuberculosis in cross bred cows were evaluated. Animals were screened through single comparative cervical intradermal tuberculin (SCCIT) test. The results revealed 7.47% prevalence of bovine tuberculosis (BTB). The frequency analysis revealed that the prevalence of disease was non-significantly different with age, sex and lactating status of animals. Necropsy revealed multiple tubercles of variable size throughout the lungs. Trachea and bronchial tree was extensively plugged with thick yellow ropy purulent exudates. Microscopically lungs exhibited characteristic small and large size nodules with caseated center and lamellar arrangement of granter caseated that was surrounded by multinucleated giant cells, epithelioid macrophages, plasma cells, and lymphocytes and fibrous in Lung tissues stained with Ziehl-Neelsen expressed masses acid-fast bacilli in the necrotic centers. Moreover, in liver sections angiomatoid cysts (peliosis hepatis) lined with hepatocytes were extensively observed. The infectious agent (Mycobacterium bovis) was confirmed using PCR. It was concluded that histopathological observations such as peliosis hepatis are useful information for the differential diagnosis of acute verses chronic process of bovine tuberculosis. [ABSTRACT FROM AUTHOR]