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Sex Determination During Inflorescence Bud Differentiation in Monoecious Pistacia chinensis Bunge

Authors
  • Bai, Qian
  • Zhu, Chenyi
  • Lei, Xia
  • Cao, Tao
  • Su, Shuchai
  • Leng, Pingsheng
Publication Date
Feb 26, 2019
Source
MDPI
Keywords
Language
English
License
Green
External links

Abstract

and (3) both males and females underwent a bisexual period, then the stamen primordia in female buds degenerated into the second round tepals, while the pistil primordia in male buds gradually disappeared. During the sex differentiation phase, female buds were spindle-shaped, while the male buds were full teardrop-shaped, and male buds were bigger than female buds. Taken together, no sex-associated DNA marker was found, sex expressions were unstable after grafting, and the alternative sex organs appeared in the early stage of sex differentiation, suggesting that sex determination occurred during floral development instead of the early vegetative period. These results indicated that the sex expressions may be affected by environmental factors, increasing the understanding of sex determination mechanisms in P. chinensis and other species.

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