Treatments with tritiated thymidine (TdR-(3)H) have revealed the existence of two populations of mitotically active cells in meristems of lateral roots of Vicia faba. A rapidly dividing population, with a cycle time of 14 hr, constitutes about half the cells in the meristem. A second population of cells, with a cycle time in excess of 30 hr, is also present. Estimates of the relative size of th...

Public attention has been drawn to the acute porphyrias in the past few years by speculation that they affected the character of George III and the creative genius of Vincent van Gogh. During the same period, there have been important advances in the understanding of the molecular basis of the acute porphyrias and in diagnosis and the clinical management of patients and their families. Four typ...

OBJECTIVES Although epileptic seizures are an infrequent feature of acute attacks of the neuropsychiatric porphyrias, there are no significant reports of porphyria in chronic epilepsy. This paper attempts to redress the balance. METHODS Three case reports, including detailed laboratory and molecular diagnostics. RESULTS Two patients with variegate porphyria and one with acute intermittent p...

in several parts of the world, important yield losses are caused to faba bean due to attack by the black bean aphid aphis fabae scopoli. although resistance could be a good alternative to chemical control, its genetic basis is still largely unknown; and its phenotypic expression is still poorly described, making crucial the permanent evaluation of genetic resources available in different countr...

Mounting levels of insecticide resistance within Australian Helicoverpa spp. populations have resulted in the adoption of non-chemical IPM control practices such as trap cropping with chickpea, Cicer arietinum (L.). However, a new leaf blight disease affecting chickpea in Australia has the potential to limit its use as a trap crop. Therefore this paper evaluates the potential of a variety of wi...

Germination and viability coefficients of Faba Bean (Vicia faba) seed under different storage conditions