Abstract
In this chapter we describe protocols for immunolabeling and FISH of pollen grains undergoing postmeiotic mitosis using Aegilops speltoides, Secale cereale, and Hordeum vulgare as models. Tissue sectioning of pollen overcomes the problem of the pollen grain wall impermeability that interferes with immunolocalization and in situ hybridization. The crucial element of the protocol is the generation and immobilization of tissue sections. Our method facilitates the investigation of the microspore cell divisions and pollen grain maturation.
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