In this article we will discuss about:- 1. Meaning of Pollen Viability 2. Variations in the Viability of Pollen 3. Causes for the Loss 4. Factors. Meaning of Pollen Viability: Pollen viability refers to the ability of the pollen to perform its function of delivering male gametes to the embryo sac. This functional property of the pollen after their release [...]
Pollen wall development may be considered under exine and intine growth phases. 1. Exine Growth Phase: After meiosis of microsporocyte (microspore mother cells) the tetrads of haploid microspores are enveloped by a callosic wall. The callose wall can be detected around the microspore mother cells during initiation of meiosis (Fig. 2.1a and 2.2a). It forms a layer between the cytoplasm [...]
In this article we will discuss about the methods and significance of pollen storage in plants. Systematic research on pollen storage started at the end of the 19th century. There is large number of crop species, including vegetables, fibre and fruit crops, forage and cereals, for which pollen storage strategies are desirable. Genetic conservation through pollen storage is desirable for [...]