considering the rich diversity of grape germplasm of iran, the severe cold winter occurred in 2007, provided a chance to evaluate responses of selected superior clones of iranian seedless grape ciltivars to cold in natural and artificial (in freezer) conditions. four one-year old branches per plant in each clone were selected and number of healthy and damaged sprouts were counted. based on cold...

zagros (drought tolerant) and pishtaz (drought susceptible) cultivars were classified on the basis of shoot dry weight and were used as plant material in this study. total chlorophyll, carotenoids, antocyanins, proline, soluble sugar contents, lipid peroxidation, antioxidant enzyme activities and protein patterns were determined. seedlings of wheat genotypes were grown in nutrient solution cult...

We discuss four distinct semantic consequence relations which are based on Strong Kleene theories of truth and which generalize the notion of classical consequence to 3-valued logics. Then we set up a uniform signed tableau calculus (the strict-tolerant calculus) which we show to be sound and complete with respect to each of the four semantic consequence relations. The signs employed by our cal...