Wednesday and Thursday, but not Friday

But hey, 2/3 ain't bad. Alright, here goes:

• Wednesday: Verne Grant. 1966. The selective origin of incompatibility barriers in the plant genus Gilia. Am Nat 100: 99–118.

Long but made easier by the old-school descriptive style. One of the first papers describing what would probably be described today as reinforcement in plants. Stresses the importance of looking at RI between different allopatric species/populations rather than with the species/populations you use for your "sympatric" comparison. Found that post-mating RI was generally stronger for sympatric species pairs than allopatric pairs.

• Thursday: Charlie Heiser. 1951. Hybridization in the annual sunflowers Helianthus annuus X H. argophyllus. Am Nat 85: 65–72.

I'm getting myself caught up on all the background reading I picked out for my summer planting (some seedlings of which I transplanted from petri dishes to soil today!). This is the oldest paper of the bunch, describing natural and artificial hybrids and RI between the two parent species of my BC1 mapping population. Turns out they are relatively interfertile, probably because they were allopatric for most of the period since they diverged.

No paper for today--I started one but just can't make myself finish it. At least that'll make Monday's paper easier!