Plant Species Disjunctions

Plant Species Disjunctions

Plant Species Diversity in Gonabad

Gonabad located at Khorasan Razavi and coordinates 580 30’ N 34o 35’ E. The highest point of the zone belongs to Peak of Siah Mountain (height of 2,863 meters above sea level) and the lowest place has height of 810 meters above sea level, which is located in North West in salt desert. The mean temperature of the warmest and coldest of year is 29.3 and 3.9 respectively. Mor...

Plant Species Diversity in Gonabad

Gonabad located at Khorasan Razavi and coordinates 580 30’ N 34o 35’ E. The highest point of the zone belongs to Peak of Siah Mountain (height of 2,863 meters above sea level) and the lowest place has height of 810 meters above sea level, which is located in North West in salt desert. The mean temperature of the warmest and coldest of year is 29.3 and 3.9 respectively. Mor...

A REVISION OF PLANT-ASSOCIATED VERTICILLIUM SPECIES

Molecular approaches were used to re-evaluate the morphological criteria used to identify plant-associated Verticillium species. ITS-RFLPs divided the 31 studied strains of seven Verticillium species, (including the type species V. luteo-album) into four clusters. Cluster one comprised strains of the type species, V. luteo-album, cluster two V. albo-atrum, V. dahliae, V. nubilum and V. tricorpu...

Learning Disjunctions of Features

Littlestone's Winnow algorithm for learning disjunctions of Boolean attributes where most attributes are irrelevant is one of the most fundamental results in learning theory. Because of the importance of Winnow, it is natural to try extending Winnow to learn disjunctions of features (i.e., concepts). In doing so, we may generalize some earlier applications of Winnow. In this paper, we extend Wi...