Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-10T17:05:36.510Z Has data issue: false hasContentIssue false
  • English
  • Français

Relationship Between Inflorescence Size and Seed Production in Barnyardgrass (Echinochloa crus-galli)

Published online by Cambridge University Press:  12 June 2017

Robert F. Norris
Robert F. Norris*
Affiliation:
Bot. Dep., Univ. California, Davis, CA 95616
Get access Rights & Permissions [Opens in a new window]

Abstract

Barnyardgrass inflorescence length ranged from less than 2 to over 20 cm. Inflorescences less than 4 cm long were a single first-order raceme, while the largest had 20 to 50 primary branch racemes. Inflorescences longer than about 12 cm and with more than about 12 racemes showed second-order branching. Air-dried structural biomass increased from less than 2 milligrams for the smallest to over 300 milligrams for the largest inflorescences. Inflorescence length and structural biomass were positively correlated (r2 = 0.95). Floret numbers increased from about 15 for smallest inflorescences to over 2000 for largest inflorescences and were positively correlated with inflorescence length (r2 = 0.94) and with inflorescence structural biomass (r2 = 0.94). Biomass of caryopses plus aborted florets had the same relationships as those for floret number. Measurement of frequency distribution of size and determination of numbers of inflorescences per plant should provide a means to predict fecundity in barnyardgrass.

Keywords

BarnyardgrassEchinochloa crus-galli (L.) Beauv. # ECHCGYield component analysistilleringfecundityECHCG
Type
Weed Biology and Ecology
Information
Weed Science , Volume 40 , Issue 1 , March 1992 , pp. 74 - 78
Copyright
Copyright © 1992 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Barrett, S.C.H. and Wilson, B. F. 1981. Colonizing ability in the Echinochloa crus-galli complex (barnyardgrass). I. Variation in life history. Can. J. Bot. 59:1844–1860.Google Scholar
2. Choo, T. M., Reinbergs, E., and Park, S. J. 1980. Studies on coefficients of variation of yield components and on character association by path analysis in barley under row and hill plot conditions. Z. Pflanzenzuecht. 84:107–114.Google Scholar
3. Dhagat, N. K., Goswami, U., and Narsinghani, V. G. 1978. Genetic variability, character correlations and path analysis in barnyard-millet. Indian J. Agric. Sci. 48:211–214.Google Scholar
4. Ellis, R. P. and Kirby, E.J.M. 1980. A comparison of spring barley grown in England and in Scotland. 2. Yield and its components. J. Agric. Sci., Camb. 95:111–115.Google Scholar
5. Fraser, J. and Eaton, S. W. 1983. Applications of yield component analysis to crop research. Field Crop Abstr. 36:787–797.Google Scholar
6. Gallagher, J. N. 1976. Environmental factors influencing cereal yield components. J. Sci. Food Agric. 27:394–395.Google Scholar
7. Gould, F. W., Alli, M. A., and Fairbrothers, B. E. 1972. A revision of Echinochloa in the United States. Am. Midl. Nat. 87:36–59.Google Scholar
8. Harper, J. L. 1977. The influence of density on yield and mortality. Pages 151–235 in Harper, J. L. Population Biology of Plants. Academic Press, London.Google Scholar
9. Hitchcock, A. S. and Chase, A. 1951. Pages 711–716 in Manual of the Grasses of the United States. 2nd ed. United States Dep. Agric., Misc. Publ. No. 200.Google Scholar
10. Holm, L. G., Plucknett, D. L., Pancho, J. V., and Herberger, J. P. 1977. The World's Worst Weeds: Distribution and Biology. Univ. Press of Hawaii, Honolulu. Pages 32–40.Google Scholar
11. Maun, M. A. and Barrett, S.C.H. 1986. The biology of Canadian weeds. 77. Echinochloa crus-galli (L.) Beauv. Can. J. Plant Sci. 66:739–759.Google Scholar
12. Munz, P. A. and Keck, D. D. 1973. Page 1547 in A California flora, with supplement. Univ. of California Press, Berkeley.Google Scholar
13. Nerson, H. 1980. Effects of population density and number of ears on wheat yield and its components. Field Crops Res. 3:225–234.Google Scholar
14. Norris, R. F. 1992. Case history for weed competition/population ecology: barnyardgrass (Echinochloa crus-galli) in sugarbeets (Beta vulgaris). Weed Technol. (in press).Google Scholar
15. Park, S. J., Reinbergs, E., and Song, L.S.P. 1977. Grain yield and its components in spring barley under row and hill plot conditions. Euphytica 26:521–526.Google Scholar
16. Primack, R. B. and Antonovics, J. 1981. Experimental ecological genetics of Plantago. V. Components of seed yield in ribwort plantain Plantago lanceolata L. Evolution 35:1069–1079.Google Scholar
17. Quakenbush, L. S. and Andersen, R. N. 1984. Effect of soybean (Glycine max) interference on eastern black nightshade (Solanum ptycanthum). Weed Sci. 32:638–645.Google Scholar
18. Rahn, E. M., Sweet, R. D., Vengris, J., and Dunn, S. 1968. Life history studies as related to weed control in the Northeast 5—Barnyardgrass. Bull. 368, Agric. Exp. Stn., Univ. Delaware, Newark. 46 pp.Google Scholar
19. Stevens, O. A. 1932. The number and weight of seeds produced by weeds. Am. J. Bot. 19:784–794.Google Scholar
20. Wilson, A. M., Cuany, R. L., Fraser, J. G., and Oaks, W. R. 1981. Relationships among components of seed yield in blue gramma. Agron. J. 73:1058–1062.Google Scholar
21. Winn, A. A. and Werner, P. A. 1987. Regulation of seed yield within and among populations of Prunella vulgaris . Ecology 68:1224–1233.Google Scholar
22. Yoshida, S. 1972. Physiological aspects of grain yield. Annu. Rev. Plant Physiol. 23:437–464.Google Scholar