Redox changes during cold acclimation affect freezing tolerance but not the vegetative/reproductive transition of the shoot apex in wheat.

Cold acclimation is necessary for winter wheat (Triticum aestivum L.) to achieve its genetically determined maximum freezing tolerance, and cold also fulfils the vernalisation requirement. Chromosome 5A is a major regulator of these traits.

Stress hormones and abiotic stresses have different effects on antioxidants in maize lines with different sensitivity.

The effect of stress hormones and abiotic stress treatments on reactive oxygen species and on antioxidants was compared in two maize (Zea mays L.) lines (Penjalinan and Z7) having different stress tolerance. Following treatment with abscisic acid, salicylic acid or hydrogen peroxide, the amount of hydrogen peroxide and lipid peroxides increased, while after osmotic stress or cultivation in continuous darkness, the levels were unchanged or decreased.

Rate of Rh immunization after induced abortion.

The occurrence of Rh immunization was investigated in 386 secundigravidae whose first pregnancy was terminated by induced abortion and who were not given anti-D immunoglobulin after the induced abortion. Of these, 6 (1.57%) already proved to be seropositive at the beginning of their second pregnancy, another 6 (1.

[Ulcer on the presternal tube after esophagoplasty of the greater curvature of the stomach].

Two cases are discussed, of ulcerations that have developed on the pre-sternal tube following oesophagoplasty according to the D. Gavriliu procedure. In the first case the ulceration determined stenozing of the pre-sternal tube necessitating a by-pass at the lower end of the tube with iso-peristaltic transverse colon.