HYB: Disease Resistance in Plants book

I can see I'm gonna have to wade thru the rest of this book so I can
better represent the subject material.  Vanderplank talks about vertical
and horizontal genotypes and obligate parasitism of host plants by
disease organisms, polygenes, virulence and avirulence, Scheibe's Rule,
pseudospecificity, the vertifolia effect, ghost resistance, protein
polymorphism, Vavilov's rule, and the last chapter is on "Heterogeneous
host populations and the accumulation of resistance genes".  

The chapter on "Sink-induced loss of resistance " is probably going to
have most about flowers/fruit vs disease resistance - I think it deals
mostly with allocations of sugars. (a sink being where stuff goes, kind
of like a dead end - different from a source which is where stuff comes
from, like energy from the sun being used by the plant to make sugars [a
source] going to either flowers or disease repair [sinks]).

The focus seems to be on annual crop plants, so it will be interesting
to see if there is anything that sounds like it would apply to
perennials, especially those like irises that just have flowers for fun
and dispersal and mostly reproduce vegetatively.  

I guess if a flower doesn't have viable pollen or ovules, it won't be
wasting any energy on reproduction beyond what it takes to make a few
flashy petals.

Linda Mann lmann@icx.net
too hot to try to think this hard!
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index