ACTA AGRICULTURAE BOREALI-SINICA ›› 2000, Vol. 15 ›› Issue (S1): 103-106. doi: 10.3321/j.issn:1000-7091.2000.Z1.022

Special Issue: Biotechnology

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Cyto-embryological Study on Emasculated Florets of Genotype HS 86-11 in Wheat(Triticum aestivum)

ZHAO Feng wu, LI Hui min, LI Ai guo   

  1. Dryland Farming Research Institute, Hebei Academy of Agricultural and Forestry Sciences, Hengshui 053000, China
  • Published:2000-12-31

Abstract: Cyto-embryological observation from emasculated flowers of genotype HS86-11 showed it behaved psedogamous facultative apomictic reproductive type. It's characteristics were as follows. (1) Both sexual and apomictic embryo sacs were co-existed which belonged to facultative apomixis. (2) In the sexual embryological sac, the intact8 nucleus were observed. (3)In the apomictic embryo sac, the egg cell and the synergies took the way of parthenogenesis and autonomously developed into young embryo, various phases have been observed during this process. (4) In the same apparatus the development among egg cell and synergies were not unanimous, and the phenomenon of synergies autonomously developed over egg cell has observed. (5) Polar nuclei could autofused to a big secondary cell, but further differentiation of the cell was not observed. (6)There was no endosperm nucleus formation from all the observed slides in this experiment. (7) The largest autonomously developed reproductive cell could reach the 2-celled young embryo stage, later the whole embryo sac broken down. It could be caused by both no normal endosperm formation and lack of energy.

Key words: Wheat, Cytoembryological, Facultative apomixis, Parthenogenesis, 2-celled young embryo, Embryo sac breakdown

Cite this article

ZHAO Feng wu, LI Hui min, LI Ai guo. Cyto-embryological Study on Emasculated Florets of Genotype HS 86-11 in Wheat(Triticum aestivum)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2000, 15(S1): 103-106. doi: 10.3321/j.issn:1000-7091.2000.Z1.022.