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- W2327463025 abstract "The black stem rust occurs annually on the cereals in Greece and sometimes it is very severe. The alternate host of this rust is Berberis cretica which is the only species of the family Berberidaceae growing wild in this country. Its habitat is on mountains from 800 m. to subalpine regions, in Macedonia, Thessaly, Euboea, Attica, Laconia, and Crete. Berberis cretica is annually attacked by P. graminis; however, so far it has not been proved that it plays an indispensable part in the life cycle of the black stem rust. If the bush formation of this alternate host on the mountain tops is really a source of inoculum for the cereals in the plains, then a program of eradication would have to be considered. This problem however is not answered in the present paper. Instead an interesting fact is recorded, namely, the finding of teliospores and urediospores of black stem rust on the alternate host. In this connection I desire to give due recognition for guidance to my honored Professor Frank D. Kern of the Pennsylvania State College, U. S. A. The infection of B. cretica by P. graminis has been known for a long time. Stakman (1923) was one of the first to mention it. Politis (1929) also found B. cretica infected by the black stem rust of cereals. On the contrary, in west and south Asia Minor the same barberry, which forms more or less extensive formations on the mountains above the tree zone, i.e. over 1500 m., has not been found to be attacked. On the leaves the infection consists of yellowish spots one or more on each leaf, in the middle of which first pycnia and then aecia are produced. On the diseased fruits the at-" @default.
- W2327463025 created "2016-06-24" @default.
- W2327463025 creator A5042144849 @default.
- W2327463025 date "1947-03-01" @default.
- W2327463025 modified "2023-09-23" @default.
- W2327463025 title "Production of Teliospores and Uredospores of Puccinia Graminis on Berberis Cretica in Nature" @default.
- W2327463025 cites W2010677089 @default.
- W2327463025 cites W2091138092 @default.
- W2327463025 doi "https://doi.org/10.1080/00275514.1947.12017598" @default.
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