Factors affecting germination of weed seed

Factors affecting seed germination, seedling emergence, and survival of texasweed ( Caperonia palustris )

Field, laboratory, and greenhouse experiments were conducted to determine the seed production potential and effect of environmental factors on germination, emergence, and survival of texasweed. Texasweed produced an average of 893 seed per plant, and 90% were viable. Seed exhibited dormancy, and prechilling did not release dormancy. Percent germination ranged from 56% for seed subjected to no prechilling to 1% for seed prechilled at 5 C for 140 d. Seed remained viable during extended prechilling conditions, with 80% of seed viable after 140 d of prechilling. Texasweed seed germinated over a range of 20 to 40 C, with optimum germination (54%) occurring with a fluctuating 40/30 C temperature regime. Seed germinated with fluctuating 12-h light/dark and constant dark conditions. Texasweed seed germinated over a broad range of pH, osmotic potential, and salt concentrations. Seed germination was 31 to 62% over a pH range from 4 to 10. Germination of texasweed ranged from 9 to 56% as osmotic potential decreased from − 0.8 MPa to 0 (distilled water). Germination was greater than 52% at less than 40 mM NaCl concentrations and lowest (27%) at 160 mM NaCl. Texasweed seedlings emerged from soil depths as deep as 7.5 cm (7% emergence), but emergence was > 67% for seed placed on the soil surface or at a 1-cm depth. Texasweed seed did not germinate under saturated or flooded conditions, but seed survived flooding and germinated (23 to 25%) after flood removal. Texasweed seedlings 2.5 to 15 cm tall were not affected by emersion in 10-cm-deep flood for up to 14 d. These results suggest that texasweed seed is capable of germinating and surviving in a variety of climatic and edaphic conditions, and that flooding is not a viable management option for emerged plants of texasweed.

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References

Baskin , J. M. and Baskin , C. C. 1980 . Ecophysiology of secondary dormancy in seeds of Ambrosia artemisiifolia . Ecology 61 : 475 – 480 .CrossRefGoogle Scholar

Bello , I. A. , Hatterman-Valenti , H. , and Owen , M. D. K. 2000 . Factors affecting germination and seed production of Eriochloa villosa . Weed Sci 48 : 749 – 754 .CrossRefGoogle Scholar

Benvenuti , S. 1995 . Soil light penetration and dormancy of jimsonweed (Datura stramonium) seeds . Weed Sci 43 : 389 – 393 .Google Scholar

Benvenuti , S. and Macchia , M. 1997 . Germination ecophysiology of bur beggarticks (Bidens tripartita) as affected by light and oxygen . Weed Sci 45 : 696 – 700 .Google Scholar

Bewley , J. D. and Black , M. 1982 . The release from dormancy . Pages 127 – 198 in Bewley , J. D. and Black , M. eds. Physiology and Biochemistry of Seeds . Berlin, Germany : Springer-Verlag .Google Scholar

Bouwmeester , H. J. and Karssen , C. M. 1993 . Seasonal periodicity in germination of seeds of Chenopodium album L . Ann. Bot 72 : 463 – 473 .CrossRefGoogle Scholar

Chachalis , D. and Reddy , K. N. 2000 . Factors affecting Campsis radicans seed germination and seedling emergence . Weed Sci 48 : 212 – 216 .CrossRefGoogle Scholar

Egley , G. H. and Duke , S. O. 1985 . Physiology of weed seed dormancy and germination . Pages 27 – 64 in Duke , S. O. ed. Weed Physiology. Volume I. Reproduction and Ecophysiology . Boca Raton, FL : CRC Press .Google Scholar

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Griffin , R. M. , Poston , D. H. , Blaine , M. A. , and Shaw , D. R. 2002 . Postemergence Texasweed control in Mississippi soybeans . Proc. South. Weed Sci. Soc 55 : 204 .Google Scholar

[ISTA] International Seed Testing Association. 1985 . International rules for seed testing . Seed Sci. Technol 13 : 307 – 513 .Google Scholar

Macdonald , G. E. , Brecke , B. J. , and Shilling , D. G. 1992 . Factors affecting germination of dogfennel (Eupatorium capillifolium) and yankeeweed (Eupatorium compositifolium) . Weed Sci 40 : 424 – 428 .Google Scholar

Reddy , K. N. and Singh , M. 1992 . Germination and emergence of hairy beggarticks (Bidens pilosa) . Weed Sci 40 : 195 – 199 .Google Scholar

[SAS] Statistical Analysis Systems. 1998 . SAS/STAT User’s Guide. Release 7.00 . Cary, NC : Statistical Analysis Systems Institute . 1028 p.Google Scholar

Shaw , D. R. , Mack , R. E. , and Smith , C. A. 1991 . Redvine (Brunnichia ovata) germination and emergence . Weed Sci 39 : 33 – 36 .Google Scholar

Singh , M. and Achhireddy , N. R. 1984 . Germination ecology of milkweedvine (Morrenia odorata) . Weed Sci 32 : 781 – 785 .Google Scholar

Steuter , A. A. , Mozafar , A. , and Goodin , J. R. 1981 . Water potential of aqueous polyethylene glycol . Plant Physiol 67 : 64 – 67 .CrossRefGoogle ScholarPubMed

[SWSS] Southern Weed Science Society. 1998 . Weed Identification Guide . Champaign, IL : Southern Weed Science Society .Google Scholar

Taylorson , R. B. 1987 . Environmental and chemical manipulation of weed seed dormancy . Rev. Weed Sci 3 : 135 – 154 .Google Scholar

Factors affecting germination of weed seed

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Factors affecting germination of weed seed

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