MIME-Version: 1.0 Content-Location: file:///C:/E463BA53/PDF-13.htm Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii" Title: THE GENETICS OF FLORAL DEVELOPMENT DIFFERENTIATING 2 SPECIES = OF MIMULUS (SCROPHULARIACEAE)

T= itle: THE GENETICS OF FLORAL DEVELOPMENT DIFFERENT= IATING 2 SPECIES OF MIMULUS (SCROPHULARIACEAE)

A= uthor(s): FENSTER CB= , DIGGLE PK= , BARRETT SCH, RITLAND K=

S= ource: HEREDITY 74: 258-266 Part 3, MAR 1995

D= ocument Type: Article

L= anguage: English

Cited References: 57     

 

A= bstract: Investigation of the developmental processes responsible for the evolution of the small-flowered, highly selfing Mimulus micranthus from i= ts large-flowered, mixed-mating progenitor M. guttatus, revealed M. micranthus to have both a shorter duration a= nd a higher rate of bud development. Hence flowers of M. mi= cranthus can be considered as progenetic forms of M. guttatus. Genetic analysis of F-1, F-2 and backcross generations derived from the cross M. micranthus x M. guttatus provided no evidence for major gene co= ntrol of development processes responsible for differentiating the two taxa. Furthermore, F-2 segregation patterns suggest that duration and rate of development may be genetically independent of one another. Hence, the evolu= tion of small-flowered selfing taxa in Mimulus may r= eflect selection for rapid development.

A= uthor Keywords: FLORAL DEVELOPMENT; HETEROCHRONY; MATING SYSTEM; MIMULUS

KeyWords Plus: = ;MORPHOLOGICAL DIFFERENCES; QUANTITATIVE CHARACTER; NUMBER; GENES; POPULATIONS; SELECTION; TEOSINTE; PLANTS; MAIZE

A= ddresses: UNIV TORONTO, = DEPT BOT, TORONTO, ON M5S 3B2 CANADA =

P= ublisher: BLACKWELL SCIENCE LTD, OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0= EL

S= ubject Category: GENETICS & HER= EDITY

I= DS Number: QK564

I= SSN: 0018-067X