SOME PHYSIOLOGICAL EFFECTS OF TWO SEED‐TRANSMITTED VIRUSES ON FLOWERING, SEED PRODUCTION AND SEED VIGOUR IN NICOTIANA AND CHENOPODIUM PLANTS

SUMMARY The effects of infection by spinach latent (SLV) and arabis mosaic virus (AMV) upon flowering, seed production and seed vigour, were studied in Nicotiana and Chenopodium species. Infection frequently caused mother-plants to produce flowers earlier than healthy plants, and AMV induced C. amaranticolor Coste & Reyn., which normally flowers only under 'short-day' conditions, to flower in 'long-days'. Infection with SLV or AMV generally caused a significant reduction in normal seed numbers and a corresponding increase in aborted seed. Mean seed weights were often lower from infected than from healthy plants, but in some infections lower seed production was correlated with a compensatory increase in the weight of individual seeds. The viability of seeds from infected plants was slightly reduced in some instances but, even when seed viability was not affected, tests of accelerated ageing indicated that seed vigour was impaired.

[1]  V. B. Stewart,et al.  In vitro Assessment of Cytotoxic Activity of Hybrid Variety of Momordica charantia (Bitter Gourd) , 2020, The Journal of Phytopharmacology.

[2]  S. Ouchi.  Induction of Resistance or Susceptibility , 1983 .

[3]  T. Thomas,et al.  Seed germination and seedling emergence as influenced by the position of development of the seed on, and chemical applications to, the parent plant. , 1982 .

[4]  P. A. Brocklehurst,et al.  The Germination of Carrot (Daucus carota L.) Seed Harvested on Two Dates: A Physiological and Biochemical Study , 1980 .

[5]  P. Neergaard.  Seed-borne Viruses , 1977 .

[6]  K. Hemmati,et al.  Gamete-seed transmission of alfalfa mosaic virus and its effect on seed germination and yield in alfalfa plants. , 1977 .

[7]  R. Hamilton,et al.  The mechanism of seed transmission of tobacco ringspot virus in soybean. , 1974, Virology.

[8]  H. C. Phatak.  Seed-borne plant viruses-identification and diagnosis in seed health testing , 1974 .

[9]  C. Kado,et al.  Principles and techniques in plant virology , 1972 .

[10]  C. W. Bennett,et al.  Seed transmission of plant viruses. , 1969, Advances in virus research.

[11]  J. P. Ross.  Effect of single and double infections of Soybean mosaic and Bean pod mottle viruses on Soybean yield and seed characters. , 1968 .

[12]  A. F. Murant,et al.  Seed-transmission in the ecology of nematode-borne viruses , 1967 .

[13]  Tadao Inoue.  Studies on barley stripe mosaic in Japan. , 1962 .

[14]  N. Crowley.  Studies on the time of embryo infection by seed-transmitted viruses. , 1959, Virology.

[15]  J. Caldwell.  SOME EFFECTS OF A PLANT VIRUS ON NUCLEAR DIVISION , 1952 .

[16]  W. G. Cochran,et al.  Estimation of bacterial densities by means of the "most probable number". , 1950, Biometrics.