Germination response and viability of an endangered tropical conifer Widdringtonia whytei seeds to temperature and light

South African Journal of Botany

Volumn 81, Issue , 2012, Pages 25-28

  Chanyenga, T F ^a   Geldenhuys, C J ^a   Sileshi, G W ^b  

^a STELLENBOSCH UNIVERSITY   (South Africa)

^b WORLD AGROFORESTRY CENTRE ICRAF   (Kenya)

Author keywords

Endangered; Germination; Malawi; Photoperiod; Temperature; Widdringtonia whytei

Indexed keywords

CONIFEROUS TREE; ENDANGERED SPECIES; ENDEMIC SPECIES; ENVIRONMENTAL DISTURBANCE; ENVIRONMENTAL FACTOR; GERMINATION; HABITAT QUALITY; LIGHT EFFECT; PHENOLOGY; PHOTOPERIOD; SEED BANK; SURVIVAL; TEMPERATURE EFFECT; VIABILITY;

MALAWI; MOUNT MULANJE;

CONIFEROPHYTA; WIDDRINGTONIA;

EID: 84860808788     PISSN: 02546299     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.sajb.2012.04.002     Document Type: Article

References (32)

1. Amri E. Germination of Terminalia sericea Buch ex DC. seeds. Effects of temperature regime, photoperiod, gibberellic acid and potassium nitrate. American-Eurasian Journal of Agriculture and Environmental Science 2010, 8:722-727.
2. Baskin J.M., Baskin C.C. The role of light and alternating temperatures on germination of Polygonum aviculare seeds exhumed on various dates. Weed Research 1990, 30:397-402.
3. Baskin C.C., Baskin J.J. Seeds. Ecology, Biogeography and Evolution of Dormancy and Germination 1998, 666. Academic Press, San Diego, California.
4. Bayliss J., Makungwa S., Hecht J., Nangoma D., Bruessow C. Saving the island in the sky: the plight of the Mount Mulanje cedar Widdringtonia whytei in Malawi. Oryx 2007, 41:64-69.
5. Botha F.C., Grobbelaar N., Small J.G.C. Seed germination in Citrullus lanatus. 1. Effect of white light and growth substances on germination. South African Journal of Botany 1982, 1:10-13.
6. Chanyenga T.F., Geldenhuys C.J., Harvey J. Variation in seed rain from Widdringtonia whytei growing in different conditions on Mulanje Mountain in Malawi. Southern Forests: a Journal of Forest Science 2011, 73:123-129.
7. Chapman J.D. The Mulanje Cedar: Malawi's National Tree 1995, Montfort Press, Limbe, Malawi.
8. Colbach N., Chauvel B., Durr C., Richard G. Effect of environmental conditions on Alopecurus myosuroides germination. I. Effect of temperature and light. Weed Research 2002, 42:210-221.
9. Cony M.A., Trione S.O. Germination with respect to temperature of two Argentinean Prospis species. Journal of Arid Environments 1996, 33:225-236.
10. Donald W.W. A method of validating the tetrazolium assay for testing viability of dormant jointed goatgrass (Aegilops cylindrica) seed. Weed Science 1994, 42:502-508.
11. Farmer R.E., Charrette P., Searle I.E., Tarjan D.P. Interaction of light, temperature, and chilling in the germination of black spruce. Canadian Journal of Forest Research 1984, 14:131-133.
12. Fenner M., Thompson K. The Ecology of Seeds 2005, 110-135. University Press, Cambridge.
13. Gondwe, D., 2008. Influence of cone maturity on the quality of Widdringtonia whytei seed. MSc Thesis, University of Malawi.
14. Grime J.P., Mason G., Curtis A.V., Rodman J., Band S.R., Mowforth M.A.G., Neal A.M., Shaw S. A comparative study of germination characteristics in a local flora. Journal of Ecology 1981, 69:1017-1059.
15. ISTA International Rules for Seed Testing 2003, ISTA, Bassersdorf, Switzerland.
16. Jarvis J.C., Moore K.A. Influence of environmental factors on Vallisneria americana seed germination. Aquatic Botany 2008, 88:283-294.
17. Khan M.A., Ungar I.A. Seed germination and recovery of Triglochin maritima from salt stress under different thermoperiods. Great Basin Naturalist 1999, 59:144-145.
18. Lawrence M., Oshino A., Chinguwo C. Mulanje cedar (Widdringtonia cuppressoides Endlicher) inventory. FRIM Report 94010 ODC 524.61.174 1994.
19. Makungwa S. Inventory results of Mulanje cedar resources on Mulanje Mountain. A report submitted to Mulanje Mountain Conservation Trust 2004.
20. McLemore B.F., Hansbrough T. Influence of light on germination of Pinus palustris seeds. Physiology of Plant 1970, 23:1-10.
21. Meyer S.E., Monsen S.B., McArthur E.D. Germination response of Artemisia tridentata (Asteraceae) to light and chill, patterns of between-population variation. Botanical Gazette 1990, 151:176-183.
22. Mustart P.J. A synthesis of information on Widdringtonia cedarbergensis (The Clanwilliam cedar). Report of the Botanical Society of South Africa 2008, (12p.).
23. Pauw C.A., Linder H.P. Tropical African cedars (Widdringtonia, Cupressaceae): systematic, ecology and conservation status. Botanical Journal of the Linnean Society 1997, 123:297-319.
24. Pons T.L. Seed responses to light. Seeds: The Ecology of Regeneration in Plant Communities 2000, 237-260. CABI Publishing, Wallingford, UK. Second Edition. M. Fenner (Ed.).
25. Scott S.J., Jones R.A., Williams W.A. Review of data analysis methods for seed germination. Crop Science 1984, 24:1192-1199.
26. Simon E.W., Minchin A., McMenamin M.M., Smith J.M. The low temperature limit for seed germination. New Phytologist 1976, 77:301-311.
27. Simons A.M., Johnston M.O. Environmental and genetic sources of diversification in the timing of seed germination: implications for the evolution of bet hedging. Evolution 2006, 60:2280-2292.
28. Teketay D. Germination ecology of two endemic multipurpose species of Erythrina from Ethiopia. Forest Ecology and Management 1994, 65:81-87.
29. Thanos C.A., Georghiou K., Skarou F. Glaucium flavum seed germination. An ecophysiological approach. Annals of Botany 1989, 63:121-130.
30. Thompson K., Grime J.P. A comparative study of germination responses to diurnally-fluctuations temperatures. Journal of Applied Ecology 1983, 20:141-156.
31. Thompson K., Ooi M.K.J. To germinate or not to germinate: more than just a question of dormancy. Seed Science Research 2010, 20:209-211.
32. Xiao C., Wang X., Xia J., Liu G. The effect of temperature, water level and burial depth on seed germination of Myriophyllum spicatum and Potamogeton malaianus. Aquatic Botany 2010, 92:28-32.