The aim of this research was to investigate the influence an electric field and gamma radiation upon germination spruce seeds. In order carry out research, seeds from different provenances have been subjected treatments: (EF) with 10 V, 30 50 V voltages intensity E = 266V/m, exposure time 15 35 min, (G) several treatments (1 Gy-31 1.5 Gy-46 2 Gy-62 6 Gy-186 min). Under EF, best results seed (80...

bruchidius fulvus allard is a biological control agent of camelthorn weed (alhagi camelorum fisch.) in birjand region. efficiency of b. fulvus for biological control of camelthorn weed was studied by separate experiments in laboratory and natural conditions based on crd in 2009. so in average, 35±1.15 and 48±1.04% of the seeds in the legumes destroyed in the spring sampling (early of may) and i...

The extracts of bark, leaves and stem of A. indica, fruits of P. longum, berries of E. officinalis and seeds G. indicum were prepared using different solvents. Six different combinations of these extracts were tried on male albino rats to study their effects on sperm production on histological changes in the tests of the rats here was no significant change in production and viability of sperms....

Soybean (Glycine max L. Merr.) seeds are highly sensitive to the environmental conditions experienced in STORAGE. The objectives of this study were identify QTLs for soybean seed storability by evaluating viability and vigor investigating candidate genes these traits detected QTL regions. These will aid developing cultivars with a high capacity storability. 109 90 recombinant inbred lines (RILs...

A fundamental way in which animal-dispersed plants can influence the viability and distribution of dispersed seeds is through control of retention time in the guts of dispersers. Using two species of wild chilies and their dispersers, we examined how chemical and physical properties of fruits and seeds mediate this interaction. Capsicum chacoense is polymorphic for pungency, occurs in Bolivia, ...

Weed seeds may maintain their viability when passing through the digestive tract of cattle and can be therefore dispersed by animal movement or the application of manure. Whether different cattle types of the same species can cause differential weed seed fate is largely unknown to us particularly under non-grazed systems similar to Holstein-Friesian dairy farming. We investigated the effect on ...

BACKGROUND AND AIMS Serotiny is common in the genus Banksia, so any seed collection is likely to be comprised of seeds that were produced in many different years. This study aimed to determine the impact of cone age and degree of serotiny on longevity in ex situ storage. METHODS Cones of identifiable age classes were collected from three species of Banksia. Seeds were extracted from cones and...