Online Test Banks
Score higher
See Online Test Banks
eLearning
Learning anything is easy
Browse Online Courses
Mobile Apps
Learning on the go
Explore Mobile Apps
Dummies Store
Shop for books and more
Start Shopping

Plant Biology -- Ripening Seeds

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 penetrate to the embryo.

  • Add a Comment
  • Print
  • Share
blog comments powered by Disqus
Advertisement

Inside Dummies.com

Dummies.com Sweepstakes

Win $500. Easy.