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ACTA HORTICULTURAE SINICA ›› 2008, Vol. 35 ›› Issue (4): 521-528.

• 蔬菜 • Previous Articles     Next Articles

Cytologic Observations on Anther Development of 9704A, a Cytoplasmic Male Sterile Line in Capsicum annum L.

HE Chang-zheng1,2,LIU Zhi-min1,XIONG Xing-yao1,ZOU Xue-xiao3 and XIAO Lang-tao2*
  

  1. 1 Horticulture and Landscape College, Hunan Agricultural University, Changsha 410128, China; 2 Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University, Changsha 410128, China; 3Hunan Academy of Agricultural Sciences, Changsha 410125,China)
  • Received:2007-12-05 Revised:2008-03-10 Online:2008-04-25 Published:2008-04-25
  • Contact: XIAO Lang-tao

Abstract:

The anatomical observations were conducted on anther development of 9704A, a cytoplasmic male sterile line in Capsicum annum L, and its maintainer line 9704B. The results showed that the taptum of the maintainer line belonged to the glandular type. The development of vascular tissue in the connective of the CMS lines was normal, the abortion type of this CMS line was sporophyte abortion, the karyotheca of the tapetum cells of the CMS line vanished at the sporogenous cell stage, then the nucleus lysed and dispersed into cytoplasm agglomerately and vanished ultimately. The disintegrated taptum infiltrated into the location around the pollen mother cells and conglutinated with the pollen mother cells as amoeboid tapetum did, then the pollen mother cells failed to develop into tetrad because its meiotic division halted, the middle layer cells did not degenerate.


Key words: Capsicum annum L., cytoplasmic male sterility, anther, cytology

CLC Number: