Showing papers on "Phaseoleae published in 1983"
TL;DR: There is no discernible correlation between suspensor development with amount of endosperm produced or amount present at maturity, or with habit, although elaborate suspensors are more common in derived herbaceous groups.
Abstract: Published descriptions of suspensors from Mimosoideae (12 genera, 21 species), Caesalpinioideae (7 genera, 9 species), and Papilionoideae (about 65 genera, 150 species) were collated and compared with the most recent classification scheme of the Leguminosae. The first two subfamilies have mostly suspensorless embryos. Suspensors of various forms are usually present in the Papilionoideae (20 of the 32 tribes have been sampled). The putatively primitive and intermediately placed tribes have mostly inconspicuous suspensors. This is also true in some advanced tribes, but some or all members of other tribes have conspicuous suspensors of differing morphology: Phaseoleae, Loteae/Coronilleae, Vicieae/Cicereae/ Trifolieae, Crotalarieae, and Genisteae. There is no discernible correlation between suspensor development with amount of endosperm produced or amount present at maturity, or with habit, although elaborate suspensors are more common in derived herbaceous groups. Suspensor morphology helps to outline broad evolutionary trends in the family and to place studies on individual species in perspective.
44 citations
TL;DR: It is concluded that the granular interstitium is a derived structure in papilionoid legumes.
Abstract: A wide range of transitional forms of granular interstitia from simple to complex and from random to ordered occur in the pollen of the subfamily Papilionoideae. Three main types are described: 1) large, widely spaced irregular granules (Type A); 2) densely packed groups of columellae and granules (Type B); and 3) a mass of more or less disorganized granules (Type C). In the genus Calopogonium (tribe Phaseoleae) all three types have been found in diffierent species. Two of the types have been found in diffierent species of the genus Psoralea (tribe Psoraleeae). Granular structures so far occur in six tribes: Desmodieae, Indigofereae, Loteae, Phaseoleae, Psoraleeae, and Vicieae. All of the tribes are regarded as being evolutionarily advanced in both macro and micro characters and many, but not all, show specialized pollen characters. It is concluded that the granular interstitium is a derived structure in papilionoid legumes.
40 citations
01 Jan 1983
TL;DR: Proteins have proved to be very valuable for the identification of certain taxa, aiding in establishing relationships, and helping to formulate a satisfactory classification, for distinguishing intraspecific taxa.
Abstract: Seed proteins, especially the 7 S phaseolin, have been satisfactorily used to confirm the taxonomic re-arrangement reported by Verdcourt (1970), whereby Phaseolus is divided into two genera, Phaseolus and Vigna. Within the tribe Phaseoleae the genus Phaseolus s.str. has been shown to occupy an isolated position by possessing a serologically different major storage protein. For distinguishing intraspecific taxa the lectins, which are included in the albumin fraction, have proved to be most satisfactory. Thus, proteins have proved to be very valuable for the identification of certain taxa, aiding in establishing relationships, and helping to formulate a satisfactory classification.
5 citations