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Annals of Botany 81: 735-740, 1998
© 1998 Annals of Botany Company

Reproductive Biology ofDalbergia miscolobiumBenth. (Leguminosae-Papilionoideae) in SE Brazil: The Effects of Pistillate Sorting on Fruit-set

PETER GIBBS and REGINA SASSAKI

Plant Science Laboratories, The University, St Andrews, KY16 9AL, UK Instituto de Botânica, CxP 4005, São Paulo, 01051, Brazil

April 17, 1997 ; June 30, 1997 . February 18, 1998 .

The breeding system ofDalbergia miscolobiumBenth. was investigated by means of controlled pollinations and studies of post-pollination events in pistils. This species does not have homomorphic self-incompatibility, but crossed flowers always have higher fruit set than selfs, despite the fact that embryo development may be initiated in selfed pistils. It is suggested that deleterious recessive alleles, which lead to abortion of most selfed seeds, together with some maternal resource limitation, result in low fruiting success.Copyright 1998 Annals of Botany Company

Dalbergia miscolobiumBenth., Leguminosae, breeding system, pistillate sorting, fruiting success, seed set.


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