Plant Breeding

Question 1

what is monoecy?

Answer 1

male and female flowers on the same plant

Question 2

what is andromonoecy?

Answer 2

when the flower is hermaphroditic - male

Question 3

what is gynodioecy?

Answer 3

when the flower is hermaphroditic - female

Question 4

what is dioecy?

Answer 4

when theres male OR female flowers on the same plant - male one plant, female other plant

Question 5

whats the genetic model for gynodioecy?

Answer 5

1 + k > 2 this is the threshold for female advantage of male sterility
or the same but with >2(1 - s8) which takes inbreeding into account

Question 6

whats the genetic model for androdioecy?

Answer 6

1 + k > 2 (1-s8)/(1-s) this takes into account premeption of access to ovvules in hermaphrodites due to selfing

Question 7

what do monoecious popluations show more of?

Answer 7

inbreeding

differentiation between local populations

Question 8

what does evolution of dioecy seem to be based on?

Answer 8

resource allocation

Question 9

key features of dioecy?

Answer 9

broad eco and evo correlates

clades less species rich than related clades due to higher extinction or lower speciation

Question 10

why is speciation supressed in higher clades?

Answer 10

local pops maintain higher genetic diversity so resulting in less divergence between populations

Question 11

what did Vamosi and Otto Zooz conclude?

Answer 11

that sexual dimorphism would lead to less visitation of female flowers and so in turn extinction