The age-related changes in bone tissue microstructure of the femur in juvenile and adult rabbits were investigated. The experiment was carried out on clinically healthy, 2-3 month and 5-6 month-old, female New Zealand White rabbits. Altogether 20 bones were analysed. Approximately 70-100 μm histological sections were prepared. The qualitative characteristics of the femur microstructure were det...

Tomato plants (Lycopersicon esculentum, var. Better Boy) were stably transformed with a gene consisting of the open reading frame of a prosystemin cDNA under the regulation of the cauliflower mosaic virus 35S promoter. The leaves of the transgenic plants constitutively produced proteinase inhibitor I and II proteins, which accumulated over time to levels exceeding 1 mg/g of dry leaf weight. Thi...

Surrogate pollen induction (SPI) was evaluated on loblolly pine (Pinus taeda L.) donor scions from 5-year-old progeny that were grafted by topworking into the lower crowns of 16-year-old loblolly pine receptor clones in a seed orchard. On each of 25 study trees, one of three pollen induction treatments (wire girdle, saw girdle or control) was applied to 10 receptor branches below the graft loca...

Grafting vines as a means of propagation was known as early as the 2 century B.C. (Cato in his treatise De agri cultua.). The use of rootstocks in Vitis, however, was not extensively used until 1880 because it was the only effective method to combat the devastating root louse phylloxera, Phylloxera vitifoliae (Fitch), (Coombe, 1999). In California, grape growers have been using rootstocks for o...

ABSTRACT In a field trial in soil infested with Verticillium dahliae, we compared the yield, growth, incidence of symptoms of Verticillium wilt, and mortality of two interspecific hybrid pistachio tree rootstocks (UCBI and PGII) with the standard rootstocks: the V. dahliae-resistant and susceptible Pistacia integerrima and P. atlantica, respectively. After 10 years, the trees were destructively...

All commercial sweet cherry trees are either budded or grafted. The part of the tree above the graft/bud union is known as the scion and the part below the graft/bud union is known as the rootstock. Sweet cherry scion cultivars have been selected over millennia for many reasons, but over the past century, breeding programs have concentrated mainly on achieving improved characteristics such as y...

Flowering time of the short-day plant Chrysanthemum morifolium is largely dependent upon daylength, but it is also distinctly influenced by other environmental factors. Flowering is delayed by summer heat. Here, the underlying basis for this phenomenon was investigated. Heat-induced flowering retardation occurred similarly in C. morifolium and C. seticuspe, a wild-type diploid chrysanthemum. In...