Forestry Studies in China

, Volume 9, Issue 2, pp 114–119 | Cite as

Floral display and breeding system of Jatropha curcas L.

  • Luo Chang-wei 
  • Li Kun 
  • Chen You 
  • Sun Yong-yu 
Research Article


Plant flowering and breeding characteristics are important for us to understand the reproduction of plant populations. In this paper, we studied the reproduction characteristics of Jatropha curcas in Yuanjiang County (23°36′N, 101°00′E), Yunnan Province. The plant produces flowers in dichasial inflorescences. Normally, the flowers are unisexual, and male and female flowers are produced in the same inflorescence. Only a few male flowers are produced in an inflorescence, and fruits are produced only through pollination between different flowers from the same or different plants. By the treatments of emasculation, bagging and artificial pollination in this experiment, there were few but same fruit set ratios when the inflorescences were emasculated, bagged, or bagged with net, except artificial pollination treatments, which showed that Jatropha curcas could produce fruit through apomixis but not wind pollination. When the inflorescences were unbagged, unemasculated and with free pollination treatments, or bagged, emasculated and with artificial cross-pollination treatments, or unbagged, emasculated and with free pollination treatments, there were many fruits produced. It showed that Jatropha curcas shows outcrossing, is self-compatible, and demanding for pollinators. Normally, the male flowers open first and a few flowers bloom in one day in a raceme. These flowers last a long time in bloom. However, a large number of female flowers open from the third to the fifth day, with some female flowers opening first in a few raceme. This shows a tendency to promote xenogamy and minimize geitonogamy.

Key words

Jatropha curcas floral display breeding system outcrossing index pollen-ovule ratio 


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  1. Bawa K S, Perrv D R, Beach J H. 1985a. Reproductive biology of tropic lowland rain forest trees. I. Pollination systems. Amer. J. Bot., 72: 331–345CrossRefGoogle Scholar
  2. Bawa K S, Bullock S H, Perry D R, CoviIIe R E, Grayum M H. 1985b. Reproduive biology of tropic lowland rain forest trees. II. Polination systemes. Amer. J. Bot., 72: 346–356CrossRefGoogle Scholar
  3. Bullock S H. 1985. Breeding systems in the flora of a tropical deciduous forest in Mexico. Biotrop, 17: 287–301CrossRefGoogle Scholar
  4. Cruden R W. 1977. Pollen-ovule ratios: a conservative indicator of breeding systems in flowering plants. Evolution, 31: 32–46CrossRefGoogle Scholar
  5. Cruden R W. 1988. Temporal dioecism: Systematic breadth, associated traits and temporal patterns. Bot. Gaz., 149: 1–15CrossRefGoogle Scholar
  6. Dafni A. 1992. Pollination Ecology. New York: Oxford University Press, 1–57Google Scholar
  7. Dulmen A V. 2001. Polination and phenology of flowers in the canopy of two contrasting rain forest types in Amazonia, Colombia. Plant Ecol., 153: 73–85CrossRefGoogle Scholar
  8. Editorial Committee of Flora China Nica of the Academy of Sciences of China. 1996. Flora of China. Beijing: Science Press, 44(2): 148 (in Chinese)Google Scholar
  9. Faegri K, Pijl V D L. 1979. The Principles of Pollination Ecology. 3rd edn. Oxford: Pergamon Press, 151–154Google Scholar
  10. Fang Y M. 1996. Plant Reproductive Ecology. Jinan: Shandong University Press, 1–56, 120–163 (in Chinese)Google Scholar
  11. Grant V. 1981. Plant Speciation (2nd ed). New York: Columbia University PressGoogle Scholar
  12. Guo Y H. 1994. Pollination biology and plant evolution. In: Chen J K, Yang J (eds.), Plant Evolutionary Biology. Wuhan: Wuhan University Press, 232–280 (in Chinese)Google Scholar
  13. Les D H. 1988. Breeding systems, population structure, and evolution in hydrophilous angiosperms. Ann. Mo. Bot. Gard., 75, 819–835CrossRefGoogle Scholar
  14. Liu X J, Ding M M, Zhang G X, Zhao L, Li R J. 1997. Studies on flower biology and breeding system of Vicia L. in Northeast China. Bull. Bot. Res., 17(4): 421–429 (in Chinese with an English abstract)Google Scholar
  15. Stebbins G L. 1970. Adaptive radiation in angiosperms, I. Pollination mechanisms. Ann. Rev. Ecol. Syst., 1: 307–326CrossRefGoogle Scholar
  16. Wyatt R. 1983. Pollinator plant interactions and the evolution of breeding systems. In: Real L (ed.), Pollination Biology. Florida: Academic Press, 51–95Google Scholar
  17. Zhang D Y, Jiang X H. 2001. Mating system evolution, resource allocation, and genetic diversity in plants. Acta Phytoecol. Sin., 25(2): 130–143 (in Chinese with an English abstract)Google Scholar

Copyright information

© Beijing Forestry University 2007

Authors and Affiliations

  • Luo Chang-wei 
    • 1
  • Li Kun 
    • 1
  • Chen You 
    • 2
  • Sun Yong-yu 
    • 1
  1. 1.Research Institute of Insect ResourcesChinese Academy of ForestryKunmingP. R. China
  2. 2.Yunnan Provincial Forestry Vocational CollegeKunmingP. R. China

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