lecture 02

lecture 02 - 1/9/2011 Comparison of Plant Reproductive...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1/9/2011 1 Comparison of Plant Reproductive Strategies Plant Sexual Reproduction • Most common strategy in nature – Inexpensive, way to avoid disease transfer – Results in genetic variation in the offspring - each parent contributes 1/2 of the offspring’s DNA – Confers an adaptive advantage to the organism - ie. Irish potato famine •Group of plants propagated from seeds: •Are called a seedling population •Are genetically variable - Provide opportunity to select for new, useful traits - Challenge to maintain trait of interest Plant Sexual Reproduction Challenge for plant propagation Maintaining a cultivar that is True-to-Type - Trait of interest has been fixed through breeding How can the trait maintained? Maintaining a cultivar that is True-to-Type Option #1 – Identify genes contributing to the trail and select seeds to ensure all genes are homozygous X Pp Pp PP Pp Pp pp
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 X PP PP PP PP PP PP X pp pp pp pp pp pp “A quantitative trait is the result of many interacting genes that are expressed uniquely in different environments.” Quantitative Traits Maintaining a cultivar that is True-to-Type Maintaining a cultivar that is True-to-Type Option #2 – Vegetative propagation Plants originating by a single source plant by vegetative propagation: Called a “ clonal population Genetically identical to the parent
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 6

lecture 02 - 1/9/2011 Comparison of Plant Reproductive...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online