Failure of Fertilization Associated with Absence of Zygote Development in the Interspecific Cross of Fagopyrum tataricum × F. esculentum

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概要

• 論文の詳細を見る

• To obtain a desirable hybrid from an interspecific cross between Fagopyrum tataricum and F. esculentum, the early embryo developmental changes were investigated by light microscopy and transmission electron micro-scopy (TEM). The nature of pre- and post-fertilization barriers in the hybrid embryo was examined at the ultrastructural level. The ovules were excised at 1 to 5 days after pollination (DAP) and fixed for TEM. In comparison with self-pollinated embryo (F. tataricum) or legitimate-pollinated embryo (F. esculentum), the interspecific hybrid embryos showed numerous abnormal ultrastructural pre- and post-fertilization phenomena leading to the abortion of embryo. The main abnormal phenomena were failure of fertilization, no zygotic development with a broken cell wall, dispersed endosperm with absence of ribosomes, and defective embryo sac development such as srunken, small and irregular-shaped embryo sac. The interspecific incompatibility was attributed to the failure of fertilization and the hybrid zygotic embryo showed retardation in cell division, which resulted in cease of development.

• 日本育種学会の論文

著者

• Adachi Taiji

  Laboratory Of Plant Genes And Physiology Division Of Agricultural And Environmental Sciences Graduat

• Guan Li-ming

  Faculty Of Agriculure Miyazaki University

• Shaikh Nilufar

  Laboratory Of Plant Genes And Physiology Division Of Agricultural And Environmental Sciences Graduat

関連論文

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• Ultrastructural Aspects on Degeneration of Embryo, Endosperm and Suspensor Cells following Interspecific Crosses in the Genus Fagopyrum
• Abnormal Embryo Development and Efficient Embryo Rescue in Interspecific Hybrids, Oryza sativa × O. minuta and O. sativa × O. officinalis
• Failure of Fertilization Associated with Absence of Zygote Development in the Interspecific Cross of Fagopyrum tataricum × F. esculentum
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