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Barley Stripe Mosaic Virus
Author(s) -
JENS SANDFAER
Publication year - 1983
Publication title -
eppo bulletin
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.327
H-Index - 36
eISSN - 1365-2338
pISSN - 0250-8052
DOI - 10.1111/j.1365-2338.1983.tb01722.x
Subject(s) - mosaic , citation , computer science , information retrieval , biology , world wide web , geography , archaeology
BSMV infection caused a pronounced increase in the frequency of triploid and aneuploid seeds in eleven barley varieties, but with considerable variation in frequency among varieties. In some of the varieties triploids exceeded three per cent. In virus-free material a few triploids were found in most of the varieties, but the frequency was very low. There was, however, a significant variation among varieties. ARLEY stripe mosaic virus (BSMV) is known to influence the morphology and physiology of infected plants (MCKINNEY and GREELEY 1965; PRING and TIMIAN 1969), to induce increased flower sterility in barley (INOUYE 1962; SANDFAER 1970b), and to influence the competitive relationships between barley varieties (SANDFAER 1970~). Further it has been shown that in maize this virus has genetic effects, the most extensively studied of which is the so-called Aberrant Ratio (AR) (SPRAGUE, MCKINNEY and GREELEY 1963; SPRAGUE and MCKINNEY 1966 and 1970). AR describes a phenomenon in maize associated with virus infection in which F, and backcross ratios exhibit consistent and significant departures from Mendelian expectations. In a previous study at our department (SANDFAER 1970a) the frequency of triploid seeds in the diploid spring barley varieties Tystofte Prentice and Svalof Freja has been found to be 2.3% and 0.04%, respectively. The triploids originated from light, shrivelled seeds from apparently sterile flowers. Prentice was found to have a high infection rate of BSMV, and in Freja a low infection rate was found. This seed-borne virus is known to increase the frequency of sterile flowers, as mentioned above. Therefore, the triploids might have originated solely or primarily from virus-induced “sterile” flowers, and the difference between the two varieties in frequency of triploids might be due to the difference in infection rate of BSMV. This was elucidated in an experiment where the frequency of triploids and aneuploids was determined in the progeny of virus-free and virusinoculated plants of eleven barley varieties. The results are reported below. MATERIALS A N D METHODS Eleven spring barley varieties were hand-sown in the field with a planting distance of 15 X 10 cm. Two kernels were sown at each place and then, after germination, thinned to one plant. Genetics 73: 597603 Apnil 1973.