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Influence of cucumber mosaic virus infection on the competitive ability and reproduction of chickweed ( Stellaria media )
Author(s) -
FRIESS N.,
MAILLET J.
Publication year - 1997
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1046/j.1469-8137.1997.00694.x
Subject(s) - stellaria media , biology , monoculture , cucumber mosaic virus , competition (biology) , reproduction , inoculation , population , botany , agronomy , plant virus , horticulture , virus , ecology , weed , virology , demography , sociology
SUMMARY Chickweed plants ( Stellaria media Vill.), either inoculated with cucumber mosaic virus (CMV) or not, were grown to reproductive maturity at a range of densities, both in monoculture and in mixture. CMV infection did not influence the vegetative growth of plants grown in monoculture. Similarly, the total vegetative production of a population containing infected and healthy plants was the same as that of a monoculture of healthy plants. However, infected plants were disadvantaged when in competition with healthy plants, the disadvantage increasing with density and the proportion of healthy plants. Investment in sexual reproduction was reduced in infected plants at all densities and in healthy plants at high densities. In very hard conditions, plants did not even produce seeds.