AOSA (Association of Official Seed Analysts) (1993) Rules for testing seeds. Journal of Seed Technology 16, 1–113.
Bewley, J.D. (1997) Breaking down the walls – a role for endo-β-mannanase in release from seed dormancy? Trends in Plant Science 2, 464–469.
Bewley, J.D. and Black, M. (1994) Seeds: Physiology of development and germination (2nd edition). New York, Plenum Press.
Bewley, J.D. and Halmer, P. (1980/1981) Embryo-endosperm interactions in the hydrolysis of lettuce seed reserves. Israel Journal of Botany 29, 118–132.
Bewley, J.D., Leung, D.W.M. and Oullette, F.B. (1983) The cooperative role of endo-β-mannanase, β-mannosidase and β-galactosidase in the mobilization of endosperm cell wall hemicelluloses of germinated lettuce seed. Recent Advances in Phytochemistry 17, 137–152.
Bradford, K.J. and Somasco, O.A. (1994) Water relations of lettuce seed thermoinhibition. I. Priming and endosperm effects on base water potential. Seed Science Research 4, 1–10.
Cantliffe, D.J. (1976) Changes in ATP in lettuce germinated at different temperatures in the presence of growth regulators. Plant Physiology 57, S–8.
Cantliffe, D.J., Shuler, K.D. and Guedes, A.C. (1981) Overcoming seed thermodormancy in a heat sensitive romaine lettuce by seed priming. HortScience 16, 196–198.
Cantliffe, D.J., Fischer, J.M. and Nell, T.A. (1984) Mechanism of seed priming in circumventing thermodormancy in lettuce. Plant Physiology 75, 290–294.
Carpita, N.C., Nabors, M.W., Ross, C.W. and Petretic, N.L. (1979) The growth physics and water relations of redlight- induced germination in lettuce seeds. III. Changes in the osmotic and pressure potential in the embryonic axes of red- and far-red-treated seeds. Planta 144, 217–224.
Downie, B., Hilhorst, H.W.M. and Bewley, J.D. (1997) Endo-β-mannanase activity during dormancy alleviation and germination of white spruce (Picea glauca) seeds. Physiologia Plantarum 101, 405–415.
Dulson, J. and Bewley, J.D. (1989) Mannanase from Lactuca sativa: metabolic requirements for production and partial purification. Phytochemistry 28, 363–369.
Dulson, J., Bewley, J.D. and Johnston, R.N. (1988) Abscisic acid is an endogenous inhibitor in the regulation of mannanase production by isolated lettuce (Lactuca sativa cv. Grand Rapids) endosperms. Plant Physiology 87, 660–665.
Dutta, S., Bradford, K.J. and Nevins, D.J. (1994) Cell-wall autohydrolysis in isolated endosperms of lettuce (Lactuca sativa L.). Plant Physiology 104, 623–628.
Dutta, S., Bradford, K.J. and Nevins, D.J. (1997) Endo-β- mannanase present in cell wall extracts of lettuce endosperm prior to radicle emergence. Plant Physiology 113, 155–161.
Gray, D. (1975) Effects of temperature on the germination and emergence of lettuce (Lactuca sativa L.) varieties. Journal of Horticultural Science 50, 349–361.
Guedes, A.C. and Cantliffe, D.J. (1980) Germination of lettuce seeds at high temperature after seed priming. Journal of the American Society for Horticultural Science 105, 777–781.
Guedes, A.C., Cantliffe, D.J. and Nell, T.A. (1981) Morphological changes during lettuce seed priming and subsequent radicle development. Journal of the American Society for Horticultural Science 106, 121–126.
Guzman, V.L., Nagata, R.T., Datnoff, L.E. and Raid, R.N. (1992) ‘Florida 202’ and ‘Everglades’: Two new butterhead lettuce cultivars adapted to Florida. HortScience 27, 852–853.
Haigh, A.H. (1988) Physiological investigations into the control of seed germination and priming. PhD Thesis, Maquarie University, Sydney.
Halmer, P. (1989) De novo synthesis of mannanase by the endosperm of Lactuca sativa. Phytochemistry 28, 371–378.
Halmer, P. and Bewley, J.D. (1979) Mannanase production by the lettuce endosperm. Control by the embryo. Planta 144, 333–340.
Halmer, P., Bewley, J.D. and Thorpe, T.A. (1975) Enzyme to break down lettuce endosperm cell wall during gibberellin and light-induced germination. Nature 258, 716–718.
Halmer, P., Bewley, J.D. and Thorpe, T.A. (1976) An enzyme to degrade lettuce endosperm cell walls. Appearance of a mannanase following phytochromeand gibberellin-induced germination. Planta 130, 189–196.
Ikuma, H. and Thimann, K.V. (1963) The role of seed-coats in germination of photosensitive lettuce seeds. Plant and Cell Physiology 4, 169–185.
Karssen, C.M., Haigh, A., Van der Toorn, P. and Weges, R. (1989) Physiological mechanisms involved in seed priming. pp. 269–280in Taylorson, R.B. (Ed.) Recent advances in the development and germination of seeds. New York, Plenum Press.
Keys, R.D., Smith, O.E., Kumamoto, J. and Lyon, J.L. (1975) Effect of gibberellic acid, kinetin, and ethylene plus carbon dioxide on the thermodormancy of lettuce seed (Lactuca sativa L. cv. Mesa 659). Plant Physiology 56, 826–829.
Khan, A.A. (1980/1981) Hormonal regulation of primary and secondary seed dormancy. Israel Journal of Botany 29, 207–224.
Nabors, M.W. and Lang, A. (1971a) The growth physics and water relations of red-light-induced germination in lettuce seeds. I. Embryos germinating in osmoticum. Planta 101, 1–25.
Nabors, M.W. and Lang, A. (1971b) The growth physics and water relations of red-light-induced germination in lettuce seeds. II. Embryos germinating in water. Planta 101, 26–42.
Nascimento, W.M., Cantliffe, D.J. and Huber, D.J. (2000) Thermotolerance in lettuce seeds: Association with ethylene and endo-β-mannanase. Journal of the American Society for Horticultural Science 125, 518–524.
Nomaguchi, M., Nonogaki, H. and Morohashi, Y. (1995) Development of galactomannan-hydrolyzing activity in the micropylar endosperm tip of tomato seed prior to germination. Physiologia Plantarum 94, 105–109.
Nonogaki, H. and Morohashi, Y. (1996) An endo-β- mannanase develops exclusively in the micropylar endosperm of tomato seeds prior to radicle emergence. Plant Physiology 110, 555–559.
Nonogaki, H. and Morohashi, Y. (1999) Temporal and spatial pattern of the development of endo-β- mannanase activity in germinating and germinated lettuce seeds. Journal of Experimental Botany 50, 1307–1313.
Nonogaki, H., Matsushima, H. and Morohashi, Y. (1992) Galactomannan hydrolyzing activity develops during priming in the micropylar endosperm tip of tomato seeds. Physiologia Plantarum 85, 167–172.
Nonogaki, H., Gee, O.H. and Bradford, K.J. (2000) A germination-specific endo-β-mannanase gene is expressed in the micropylar endosperm cap of tomato seeds. Plant Physiology 123, 1235–1245.
Pavlista, A.D. and Valdovinos, J.G. (1975) Carboxymethylcellulase activity prior to the onset of germination of lettuce seeds. Plant Physiology 56, S–83.
Psaras, G., Georghiou, K. and Mitrakos, K. (1981) Redlight- induced endosperm preparation for radicle protrusion of lettuce embryos. Botanical Gazette 142, 13–18.
Reid, J.S.G., Davies, C. and Meier, H. (1977) Endo-β- mannanase, the leguminous aleurone layer and the storage galactomannan in germinating seeds of Trigonella foenum-graecum L. Planta 133, 219–222.
SAS Institute, Inc. (1987) SAS/STAT user's guide. Release 6.03 ed., Cary, NC, SAS Inst.
Small, J.G.C., Schultz, C. and Cronje, E. (1993) Relief of thermoinhibition in ‘Grand Rapids’ lettuce seeds by oxygen plus kinetin and their effects on respiration, content of ethanol and ATP, and synthesis of ethylene. Seed Science Research 3, 129–135.
Still, D.W., Dahal, P. and Bradford, K.J. (1997) A singleseed assay for endo-β-mannanase activity from tomato endosperm and radicle tissues. Plant Physiology 113, 13–20.
Sung, Y. (1996) Identification and characterization of thermotolerance in lettuce seed germination. PhD Thesis, University of Florida, USA.
Sung, Y., Cantliffe, D.J. and Nagata, R.T. (1998a) Seed developmental temperature regulation of thermotolerance in lettuce. Journal of the American Society for Horticultural Science 123, 700–705.
Sung, Y., Cantliffe, D.J. and Nagata, R.T. (1998b) Using a puncture test to identify the role of seed coverings on thermotolerant lettuce seed germination. Journal of the American Society for Horticultural Science 123, 1102–1106.
Takeba, G. (1980) Accumulation of free amino acids in the tips of non-thermodormant embryonic axes accounts for the increase in the growth potential of ‘New York’ lettuce seeds. Plant and Cell Physiology 21, 1639–1644.
Toorop, P.E. (1998) The role of endo-β-mannanase activity in tomato seed germination. PhD Dissertation, Wageningen Agricultural University, The Netherlands.
Toorop, P.E., Bewley, J.D. and Hilhorst, H.W.M. (1996) Endo-β-mannanase isoforms are present in the endosperm and embryo of tomato seeds, but are not essentially linked to the completion of germination. Planta 200, 153–158.
Toorop, P.E., van Aeist, A.C. and Hilhorst, H.W.M. (1998) Endosperm cap weakening and endo-β-mannanase activity during priming of tomato (Lycopersicon esculentum cv. Moneymaker) seeds are initiated upon crossing a threshold water potential. Seed Science Research 8, 483–491.
Valdes, V.M., Bradford, K.J. and Mayberry, K.S. (1985) Alleviation of thermodormancy in coated lettuce seeds by seed priming. HortScience 20, 1112–1114.
Voigt, B. and Bewley, J.D. (1996) Developing tomato seeds when removed from the fruit produce multiple forms of germinative and post-germinative endo-β-mannanase. Responses to desiccation, abscisic acid and osmoticum. Planta 200, 71–77.
Weges, R., Koot-Gronsveld, E. and Karssen, C.M. (1991) Priming relieves dormancy in lettuce seeds independently of changes in osmotic constituents. Physiologia Plantarum 81, 527–533.
Wurr, D.C.E. and Fellows, J.R. (1984) The effects of grading and ‘priming’ seeds of crisp lettuce cv. Saladin, on germination at high temperature, seed ‘vigour’ and crop uniformity. Annals of Applied Biology 105, 345–352.