v.1.8.11
UNIT 1: THE NATURE OF WEEDS
1 The
nature of weeds
1.1 What is a weed?
1.2 The definition of a weed
1.3 Weeds and human nature
1.4 Weedy traits
1.5 The origins of weeds
1.6 World origins and centers of agriculture, crop
domestication and cultivation
1.7 World crop-weed species groups
UNIT 2: THE EVOLUTION OF WEED POPULATIONS
2
Evolution, natural selection and weedy
adaptation
2.1 Introduction
2.2 Evolution
2.3 Natural selection and elimination
2.4 The process of natural selection
2.5 Adaptation
3
Formation of the local weed
population (deme): Precondition to natural
selection
3.1 Introduction: opportunity
and the formation of the local deme
3.2 The structure of local weedy opportunity
3.3 Habitat heterogeneity and dynamics
3.4 Limiting resources and pervasive conditions in
local opportunity
3.5 The nature of plant invasions of local opportunity
4
Generation of genotypic and
phenotypic variation: First process of natural
selection
4.1 Genotypes and phenotypes
4.2 Generate genetic variation
4.3 Generate phenotypic variation
5
Survival, reproduction and
inheritance: Second process of natural
selection
5.1 Survive, Avoid Mortality
5.2 Reproduce the fittest, eliminate the others
5.3 Inheritance: transmit
parental traits to offspring
UNIT 3: ADAPTATION IN WEED LIFE HISTORY
6 Weed
life history
6.1 Introduction to life history
6.2 Plant life history classification systems
6.3 Representing weed life history
6.4 The ecological demography of plant population life
history dynamics
6.5 Evolutionary, trait-based, weed life history
population dynamics
7
Reproductive adaptation
7.1 Introduction
7.2 Flowering, anthesis, fertilization and birth
7.3 Embryo adaptation:
embryogenesis and dormancy induction
7.4 Propagule adaptation:
post-abscission fecundity
8
Propagule dispersal in space
and time
8.1 Introduction
8.2 Dispersal in space
8.3 Dispersal in time:
formation of seed pools in the soil
8.4 Propagule germination and recruitment
UNIT 4: ADAPTATION IN LOCAL PLANT COMMUNITIES
Weed-crop communities
as complex adaptive systems
9 Neighbor
interactions in local plant communities
9.1 Adaptation to neighbors in the community
9.2 The nature of neighbor interactions in the
community
9.3 Strategic roles and traits of interference and
facilitation with neighbors
9.4 Effects of neighborhood interactions on plant
density, growth and form
10.2 Weed community structure
10.3 Exploiting opportunity: weed community dynamics
10.4 Weed community biodiversity