Seed dormancy

Seed dormancy - Seed dormancy Almost all seeds undergo some...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Seed dormancy Almost all seeds undergo some period of dormancy—if they did not, they would start to grow in the fruits on the mother plant and defeat their principal purposes: dispersal and survival of the germplasm. The period between the formation of the seed and the time when it will germinate is called the after-ripening period , which may be a few days or months depending on the plant. Seeds of plants native to regions with cold winters almost all require an after-ripening period of cold temperatures before they will germinate. This requirement can be met in horticultural and crop varieties by refrigerating the moist seed for a period of time. This procedure is called stratification . Dormancy of seeds with hard seed coats often can be broken artificially by scarifying the seed— mechanically thinning the seed coat with a file or nicking it with a knife, allowing water and oxygen to...
View Full Document

This note was uploaded on 11/14/2011 for the course BIO 1421 taught by Professor Farr during the Fall '08 term at Texas State.

Ask a homework question - tutors are online