atefeh khandan

Value of Cultivation and Use (VCU) of six new Turkey origin upland cotton cultivars including Carisma, Lydia, PG2018, BA440, Flash and Edesa cultivars in comparison with Varamin and Mehr cultivars as control in ardabil province (Moghan) evaluated during 2917 and 2918 years by determination of seed cotton yield and its components (boll number per plant and one boll weight), earliness and some fiber quality characters including fibers percent, length, fitness, flexibility, strength, uniformity, yellowness and brightness.Based on the trial results new foreign cultivar Lydia in order to having the most seed cotton yield, earliness and fiber fitness and Flash cultivar due to more earliness and having the most fiber length, strength and brightness in comparison with other evaluated new foreign upland cotton cultivars and control cultivars had desired cultivation and use traits for recommendation to cultivation in Ardabil province (Moghan) instead of Varamin late maturity common cultivar and for substitution of Mehr obsolete variety. Therefore, based on conducted Value of Cultivation and Use (VCU) trial results new foreign upland cotton Lydia and flash cultivars introduced as new commercial for cultivation in Ardabil province (Moghan).

Rice breeding with genetic background of Iranian cultivars provides an opportunity to improve these cultivars that have high adaptability to the environment and favorable marketability. Therefore, seven promising lines, orginiated from cross combinations of Iranian and exotic rice genotypes, along with two check varieties including Tarom-Mahali and Shiroudi were evaluated in four experimental fields in Mazandaran provinces located in east zone (Behshahr), centre (Babol), west (Tonekabon) and Rice Research Instutute (Amol) in a randomized complete block design (RCBD) with three replicates during 2016-2017 (totally eight environments). Results of simple variance analysis showed that there were significant differences between genotypes for number of days to 50% of flowering, plant height, number of fertile tillers and grain yield. Combined analysis variance indicated that the effect of genotype and interaction effects of year and location and also year and location and genotype on grain yield were siginificant. G5 genotype had the highest yield in all environments and G1 genotype was in the second place in terms of yield. Stability analysis through AMMI method indicated that rice promising line G5 (DAH, originated from cross between Dasht and Ahlami-tarom) showed high of grain yield (5888.7 Kg/ha in average) and performed stable situation over environments, G1 genotype (AHS, a cross between Ahlami-tarom and Sepidroud) with 5312.1 Kg grain yield /ha in average, showed moderate stability in most of the environments.

This study was conducted to investigate the role of storage condition on seed quality of five barley (Hordeum vulgare L.) Cultivars (Usef, Nosrat, Riehan, sahra and productive), with different moisture contents (Mc)(14%, 16% and 18%) under storage condition. Seed exposed at two storage temperature (20C °and alternative temperature 20-30 . °) Experimental units were arranged factorialy in a completely randomized design with four replications. Results showed that after one year of seed storage, seeds that stored at 20-30 C° (alternative temperature) increased germination percentage and seedvigor in all cultivars. Meanwhile, germination percentage and seedling vigor were significantly affected by interaction among seed moisture content × cultivar× temperature after one year of seed storage. The highest germination percentage (99 %) was recorded for sahra cultivar in seed by 18% moisture content under storage at 20-30 C ° . Also, the maximum normal seedling were obtained from Riehan × Mc 18% × at 20-30 C° (alternative temperature) and productive× Mc 18% × 20-30C. Likewise, the minimum germination percentage (4.5%) and normal seedling (3.7%) was recorded for productive cultivar when seed harvested with Mc 14% and stored under 20 C° condition. Also, the results indicated that 20 C° storage temperature had adverse effect on seed quality when seed harvested with Mc 14% after one year storage, inall cultivars. Meanwhile, the electrical conductivity (EC) increased in seed by Mc 14% with compared to Mc18% and Mc 16%. Generally, according to cultivars that examined in this experiment, the effectiveness of storage temperature on improving seedling vigor and increasing germination percentage was more pronounced at 20-30 C° (alternative temperature) along with sample with 18.0% Mc. Finally seed stored at 20-30 C° (alternative temperature) could have maintained their vigour high, it is new founding that could help to control of seed deterioration.

This experiment was conducted to effect of changes in planting date and moisture content on vigor, protein and starch contents also seed health of corn (var sc704). Experiment was done in field of agricultural and natural resources research center in Ardebil province (Moghan) as randomized complet block in three replications Treats included: three levels of planting dates (10-May, 25- May and 9-june), four levels of seed moisture content at harvest time (30%, 25% and 15%). When cobs reached to desired moisture were air dried for getting 14% moisture content. Then the kernels were separated by laboratory sheller and graded to three sizes flat (7mm), round (6mm) and medium (5.5mm) by three sieves. Measured traits included: blotter test, standard germination, mean time to germination, radicle emergence, seed starch and protein contents. Delay in planting and harvesting caused to reduce in starch and protein content significantly. The highest fusarium infection percentage belonged to produced seeds in the third planting date when harvested with 15% moisture content and the lowest rate belonged to the first planting date 25% harvest moisture content. Delay in planting caused to reduced seed quality and low seed quality was highlighted in delayed harvest. Also the rate of decreasing in round seeds was more than flat and medium seeds so that the second planting date and 15% harvest moisture, resulting in a reduction of about 14 percent in normal seedlings in round seeds. The minimum percentage of germination and vigor were seen in round seeds that produced at the third planting date and harvested by 15% moisture content.