Ebook: Seed Germination in Desert Plants

During germination, the most resistant stage of the life cycle - the seed - changes to the most sensitive stage, namely the seedling. Therefore, in desert plant species seed dispersal and subsequent germination in the optimum time an place place are particularly critical parameters. Discussed here are the ways and means by which desert plants have adapted through the course of evolution to their extreme environment. Two such strategies which have evolved are a) plants with relatively large and protected seeds which germinate when the chance of seedling survival is high and the risk relatively low or b) those with an opportunistic strategy: minute seeds which germinate after low rainfall under high risk for seedling survival if additional rain does not follow. Most species adopt a combination of the two mechanisms. Species have adapted both genotypically and phenotypically, both aspects of which are also discussed in this thorough text. The reader is provided with a good understanding of the complex influences on each seed traced through from initial development to germination stage regarding germination preparation and subsequent survival.

---

During germination, the most resistant stage of the life cycle - the seed - changes to the most sensitive stage, namely the seedling. Therefore, in desert plant species seed dispersal and subsequent germination in the optimum time an place place are particularly critical parameters. Discussed here are the ways and means by which desert plants have adapted through the course of evolution to their extreme environment. Two such strategies which have evolved are a) plants with relatively large and protected seeds which germinate when the chance of seedling survival is high and the risk relatively low or b) those with an opportunistic strategy: minute seeds which germinate after low rainfall under high risk for seedling survival if additional rain does not follow. Most species adopt a combination of the two mechanisms. Species have adapted both genotypically and phenotypically, both aspects of which are also discussed in this thorough text. The reader is provided with a good understanding of the complex influences on each seed traced through from initial development to germination stage regarding germination preparation and subsequent survival.

---

During germination, the most resistant stage of the life cycle - the seed - changes to the most sensitive stage, namely the seedling. Therefore, in desert plant species seed dispersal and subsequent germination in the optimum time an place place are particularly critical parameters. Discussed here are the ways and means by which desert plants have adapted through the course of evolution to their extreme environment. Two such strategies which have evolved are a) plants with relatively large and protected seeds which germinate when the chance of seedling survival is high and the risk relatively low or b) those with an opportunistic strategy: minute seeds which germinate after low rainfall under high risk for seedling survival if additional rain does not follow. Most species adopt a combination of the two mechanisms. Species have adapted both genotypically and phenotypically, both aspects of which are also discussed in this thorough text. The reader is provided with a good understanding of the complex influences on each seed traced through from initial development to germination stage regarding germination preparation and subsequent survival.
Content:
Front Matter....Pages I-XIII
The Negev Desert of Israel and Other Hot Deserts of the World: Classification According to Quantities, Distribution and Seasons of Rain. Their Influences on the Germination of Desert Plants....Pages 1-23
Phenotypic Effects on Seeds During Development....Pages 25-77
Seed Dispersal and Seed Predation of Plant Species in the Negev Desert....Pages 79-144
Storage Conditions Affecting the Germinability of Seeds in the Seed Bank....Pages 145-167
Environmental Factors During Seed Imbibition Affecting Germination....Pages 169-206
Germination, the Survival of Seedlings and Competition....Pages 207-223
Conclusion....Pages 225-230
Back Matter....Pages 231-253

---

During germination, the most resistant stage of the life cycle - the seed - changes to the most sensitive stage, namely the seedling. Therefore, in desert plant species seed dispersal and subsequent germination in the optimum time an place place are particularly critical parameters. Discussed here are the ways and means by which desert plants have adapted through the course of evolution to their extreme environment. Two such strategies which have evolved are a) plants with relatively large and protected seeds which germinate when the chance of seedling survival is high and the risk relatively low or b) those with an opportunistic strategy: minute seeds which germinate after low rainfall under high risk for seedling survival if additional rain does not follow. Most species adopt a combination of the two mechanisms. Species have adapted both genotypically and phenotypically, both aspects of which are also discussed in this thorough text. The reader is provided with a good understanding of the complex influences on each seed traced through from initial development to germination stage regarding germination preparation and subsequent survival.
Content:
Front Matter....Pages I-XIII
The Negev Desert of Israel and Other Hot Deserts of the World: Classification According to Quantities, Distribution and Seasons of Rain. Their Influences on the Germination of Desert Plants....Pages 1-23
Phenotypic Effects on Seeds During Development....Pages 25-77
Seed Dispersal and Seed Predation of Plant Species in the Negev Desert....Pages 79-144
Storage Conditions Affecting the Germinability of Seeds in the Seed Bank....Pages 145-167
Environmental Factors During Seed Imbibition Affecting Germination....Pages 169-206
Germination, the Survival of Seedlings and Competition....Pages 207-223
Conclusion....Pages 225-230
Back Matter....Pages 231-253
....