Plants are altruistic–Sharing more food with siblingsDo plants perform best with family or strangers? The findings of the new study suggest that plants, like humans and animals, have the ability to be altruistic. By studying the fertilized seeds of corn, scientists from the University of Colarado, have discovered a form of plant altruism. A corn seed contains an embryo and corresponding bit of tissue called endosperm, which feeds the embryo as the seed grows. The study found fertilized seeds sharing the same mother and father were heavier than those with an embryo and endosperm from genetically different parents. This suggests an endosperm is more likely to cooperate and share more food with a genetically related embryo. In this chapter, we will explore the reproductive biology of plants in much greater detail.
After completing the topic, the student will be able to:
- Define “vegetative propagation” of plants and list different methods of vegetative propagation for obtaining desired characteristics in horticulture and in agriculture.
- Define and discuss the term “tissue culture” and appreciate the importance of this phenomenon.
- Identify the reproductive organs of flower and Explore how sexual reproduction occurs in plants.
- Analyze how male and female gametes are formed in a flower.
- Define and distinguish self–pollination and cross pollination and list different types of cross pollination methods.
- Investigate the difference between pollination and fertilization in flowering plants.
- Systematize the main stages of germination of a seed and understand the types of germination methods.
- Define and discuss the terms Apomixis and Polyembryony and appreciate the significance of apomixes.