Quiescence in Monocotyledonous and Dicotyledonous Somatic Embryos Induced by Dehydration

Abstract

Abstract Orthodox seeds enter an arrested growth phase during their final stages of development that follows closely after seed coat hardening, reduction of water content, and maturation of embryonic and storage tissues. This resting phase may last for a number of years, depending on species and environmental conditions (2), and is the major factor accounting for the efficient storage and handling qualities of seed. A similar resting phase induced in synthetic seed will be essential for propagation of many annual crop plants, especially those grown at high density over large areas (e.g., com, soybean, wheat, etc.) where planting efficiencies must be optimum. Additionally, a resting phase will be needed if synthetic seed is to be used for germplasm preservation.