The following points highlight the two types of seeds according to freezing. The types are: 1. Orthodox Seeds and 2. Recalcitrant Seeds (Unorthodox Seeds). Seeds Type # 1. Orthodox Seeds: Orthodox seeds are long-lived seeds and can be successfully dried to moisture contents as low as 5% without injury and are able to tolerate freezing. Orthodox seeds are therefore, also [...]
Let us make an in-depth study of the physiology of seed germination. After reading this article you will learn about 1. Physiology of Seed Germination 2. Physiological Condition of Quiescent Seed and 3. Physiological, Biochemical and Other Changes Accompanying Seed Germination. Physiology of Seed Germination: All the viable seeds which have overcome dormancy (if any) either naturally or artificially will [...]
The below mentioned article provides a study note on the viability or longevity of seeds. After their maturation the seeds do not remain viable indefinitely. They have a particular life span during which they must germinate otherwise they lose their viability (or capacity to germinate) first gradually and finally completely. The life span of seeds which may vary from few [...]