Late spring frost is one of the most important factors causing loss of production of the Persian walnut (Juglans regia L.). Therefore, the selection of spring frost tolerant genotypes has been among the most important priorities in the breeding programs during the recent years in Horticultural Science Research Institute, Karaj-Iran.  After the spring frost in 2010, five superior genotypes (B10,...

1. introduction flood is one of natural hazard which ranks the most one just like earthquake and drought according to the report of the natural hazard program of the united nations. besides physical factors, and lack proper management will increase the flood potential. therefore, in order to prevent flood damage it seems to be necessary to provide essential requirements before physical expansio...

in drought stress condition, it is important to estimate the n and k requirement of sugar beet. a drought-tolerant sugar beet genotype, bp karaj, was evaluated in split plot factorial design based on a randomized complete block design with four replications at motahari research station, karaj, iran for three years. main plots were allocated to irrigation treatments including normal irrigation (...

Genotype-environment interaction (GEI) is very important for breeders. It considered a complicated issue in breeding programs to obtain stable and high-yielding genotypes release new genotypes. This study was conducted achieve genotype that adaptive climatic conditions of potato-producing regions Iran. A total 20 potato lines along with five commercial varieties (Savalan, Agria, Caesar, Luta Sa...

BACKGROUND Although it is well-known that the incidence of developmental delay in high-risk infants is higher than in low-risk ones, little is known about the risk factors among Iranian infants. The objective of this study was to determine the various pre-, peri-, and neonatal factors in developmental delay in participants and to compare the incidence of each factor with that of the normal popu...