rice (oryza sativa), a salt-sensitive species, has considerable genetic variation for salt tolerance within cultivars. to evaluate salinity effects on growth, chlorophyll content and ion uptake of two rice genotypes (ir29 and ir651, sensitive and tolerant respectively) accompany with two semi-tolerant iranian rice cultivars in a green house experiment were grown in normal condition till 6th lea...

line g11867 was first introduced in iran together with 206 other white, chitti and red beans lines through ciat, and was tested in different breeding experiments from 1992 to 1999. it was selected as a superior line in all experiments. in 2001 this line was evaluated with other six lines for drought tolerance, and it was found to be more tolerant than cv. daneshkadeh the check cultivar. line g1...

One of the important abiotic stresses that negatively affect cereals such as wheat is heavy metals. Soil pollution with heavy metals has become one of the major environmental concerns resulting from the industrial development and use of fertilizers containing heavy metals. One way to counteract the negative effects of heavy metals in plants which produce reactive oxygen species is the activatio...

in order to evaluate terminal drought tolerance in different canola cultivars based on drought tolerance indices, an experiment was conducted based on randomized complete block design (rcbd) with three replications at experimental field of seed and plant improvement institute (spii), karaj in 2008-09. results using stress tolerance index (sti), geometric mean productivity (gmp) and mean product...

to study drought resistance indices of eight potato cultivars and to determine the most tolerant variety, two experiments were conducted in the form of complete randomized block design with three replications (stress and non-stress conditions) in 2002. seven indices, ssi, tol, sti, msti, gmp, tol , and mp were used to determine tolerant varieties. it was found that mp, sti, gmp, and msti were a...

This investigation was carried out with the aim of determining the effect of polyethylene glycol 6000 (PEG; 0, 3%, 6% and 9% w/v) treatment on six cultivars of Medicago sativa. PEG treatment significantly decreased the germination index in cultivars of Isfahani, Hamedani, Bami, Baghdadi, Yazdi and Ghare-Medicago, with the highest reduction in Ghare-Medicago and Hamedani cultivars by about 50% a...

in order to study the trend of bnyvv concentrations during growing season, 6 cultivars including dorohtea, laetitia(as resistant cultivars), zarghan (as a tolerant cultivar), shirin (as a susceptible cultivar), f2-93 (an f2 population with 75 % rz2 gene) and bc1-261-99 (a population with 25% rz2 gene) were used. the cultivars were planted in split plot based on a randomized complete block desig...

Potato (Solanum tuberosum) is a major crop world-wide and the productivity of currently used cultivars is strongly reduced at high soil salt levels. We compared the response of six potato cultivars to increased root NaCl concentrations. Cuttings were grown hydroponically and treated with 0 mM, 60 mM and 180 mM NaCl for one week. Growth reduction on salt was strongest for the cultivars Mozart an...

Apricot is grown in a wide range of climatic conditions in Iran, however, it is frequently damaged by late spring frost. In this case, identification of new genotypes tolerant to cold stress is indispensably needed. The objective of this study was to evaluate the genetic population and relationships among 27 apricot accessions (Prunus armeniaca) by 30 microsatellite markers and 11 morp...