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- W2389522015 abstract "Objective In order to explore the morphological character,and the pollen abortion time as well as the abortive process characters of anther and pollen of male sterile,monogerm sugar beet lines during reproductive period. Method Three group male sterile and maintenance lines of monogerm sugar beet as materials were used,we observed the biological characters of their buds,anthers and anther structure,and the development process of pollens by the methods of conventional Paraffin Slicer,Safranine Ai-Shi Haematine Crystal and Fast Green. ResultThere was some difference in morphological development of the male sterile line,compared with that of normal fertile plant,such as little shorter plant height,flowering 1-2 days earlier on main stem,4-6 calyxes or stamina,2-4 anther chamber,and the anthers were getting white or pale green color,no curl on their surface,and their abscission were postponed after flowering. The proliferation of the anthers and pollens were distinctly dysplastic. During the prophase of abortive pollens,the tapetums and middle layers of quadrants separated; during metaphase,the microspores were development arrest; during anaphase,the tapetums and microspores gradually disappeared after combination,the anthers finally turned into drying and shriveling to be unable to form pollens. Conclusion There were significant differences in morphological and cytological development of male sterile and maintenance lines. Abortive anthers and pollens approximately included four phases.It was worth notice that the abortion initial stage was reestablished when tapetums and middle layers of quadrant period separated. The opinion differ from that of former investigator,which abortion initial stage was after quadrant period." @default.
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- W2389522015 date "2007-01-01" @default.
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- W2389522015 title "Studies on Morphology and Cytology of Male Sterile and Maintenance Monogerm Sugar Beet Line During Reproduction Period" @default.
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