F. Rahimi Malekshan; A. Tavakoli; M. Rastgoo; M.R. Azimi
Abstract
Safflower (Carthamus tinctorius L.), adapted to arid and semi arid regions, is grown for seed and petal production. This research, conducted at Research Farm of Zanjan University, was aimed to select the best genotype for seed and petal production using a factorial experiment in a randomized complete ...
Read More
Safflower (Carthamus tinctorius L.), adapted to arid and semi arid regions, is grown for seed and petal production. This research, conducted at Research Farm of Zanjan University, was aimed to select the best genotype for seed and petal production using a factorial experiment in a randomized complete block design with three replications. The first factor included the harvesting time of petals at two levels including petal harvesting in the beginning of the flowering and petal harvesting after pollination and petals wilting. The second factor included different genotypes of safflower at five levels (Goldasht, Sina, Zendehrod, MEC88, and MEC59). The traits investigated in this study included number of petals per plant, number of seeds per petal, 1000-seed weight, seed and petal yield and petals color. According to the obtained results, the highest seed and petal yield were obtained for MEC88 genotype; however, its petals were pale yellow and not suitable for petal production. The harvesting time of petals had no significant effects on seed yield but delayed harvesting of petals caused to the reduction of petal yield. Number of capitol per plant showed a positive and significant correlation with seed and petals yield. Among the studied genotypes, Zendehrod cultivar is very suitable for dual-purpose cultivation and Goldasht cultivar is suitable for petal production due to the dark red petals.
M. Ghorbanzadeh Neghab; Gh. Rassam; A.R. Dadkhah
Abstract
This research was aimed to study the effects of autumn and spring sowing on seed yield, oil content and fatty acid compositions of five safflower (Carthamus tinctorius L.) cultivars in Shirvan region. The experimental design was a split plot in randomized complete blocks design with three replications, ...
Read More
This research was aimed to study the effects of autumn and spring sowing on seed yield, oil content and fatty acid compositions of five safflower (Carthamus tinctorius L.) cultivars in Shirvan region. The experimental design was a split plot in randomized complete blocks design with three replications, conducted in research field of Shirvan College of Agriculture, Ferdowsi University of Mshhad during 2010-2011. Main plots were allocated to two sowing times (autumn and spring) and the sub-plots included five safflower cultivars. Cultivars were Cina, CW-4445, Sahuripa- 88, Ghocahan local and Isfahan local. The results of variance analysis showed that the seed yield, oil content and fatty acid compositions were affected by sowing date. Seed yield and oil content obtained in autumn sowing (2330kg/ha, and 29.5%) were greater as compared to the spring sowing (1550kg/h, and 27.5%). The highest seed yield was obtained from Cina in autumn sowing (2989kg/ha) and CW-4445 in spring sowing (1789kg/ha). Sahuripa-88 had the highest oil content in autumn and spring sowing. The fatty acid content of palmitic, stearic acid and oleic increased significantly in autumn sowing. The fatty acid content of linoleic and linolenic decreased significantly in autumn sowing with high oil stability. According to the obtained results, seed yield, oil content, fatty acid compositions and oil stability of cultivars showed significant diffrences. Our results demonstrated that the sowing time and variety may have an important effect on seed yield, oil content and quality of safflower seed. Cina, CW-4445, and Ghochan local cultivars showed desirable potential for cultivation of safflower as well as increasing the area under cultivation.
M. Palizdar; B. Delkhosh; A.H Shiranirad; Gh. Noormohammadi
Abstract
In order to study the effect of irrigation regimes and potassium fertilizer yield and yield components of safflower (Carthamus tinctorius L.) as a medicinal plant, a field experiment was conducted in a factorial design based on randomized complete blocks with three replications. The experiment was performed ...
Read More
In order to study the effect of irrigation regimes and potassium fertilizer yield and yield components of safflower (Carthamus tinctorius L.) as a medicinal plant, a field experiment was conducted in a factorial design based on randomized complete blocks with three replications. The experiment was performed on a winter safflower genotype (Goldasht) at the experimental farm of Ghazvin during cropping season 2009-2010. Four irrigation regimes including 60 (Control), 100, 140 and 180mm evaporation from evaporation pan (Class A) and four levels of potassium fertilizer including 0 (Control), 50, 100 and 150 kg.ha-1 comprised the experimental factors. Results showed that with increasing irrigation level, seed yield, plant height, stem diameter, number of branches per plant, head diameter, number of heads per plant and number of seeds per head increased significantly; as the seed yield of the irrigation based on 60mm evaporation was 110% higher than the that of irrigation based on 180mm evaporation. All traits also increased significantly with increasing potassium content. As application of 150kg.ha-1 potassium increased the seed yield by 58% compared to the control treatment. The interaction effect of irrigation and potassium was significant on all traits except stem diameter and head diameter. In irrigation based on 60mm evaporation, application of 150 kg.ha-1 potassium increased seed yield by 35% compared to the control treatment but in irrigation based on 180mm evaporation, it was increased by 130%. According to the results, application of potassium fertilizer showed positive effects on yield and yield components of safflower in sever and moderate water stress conditions.
L. Ebrahimzadeh Sarvestani; M.J. Arvin; K. Maghsoudi
Abstract
Field studies were conducted over two growing seasons to study the effects of foliar application of cycocel (CCC) at early growth stage on grain yield and its components of (Carthamus tinctorius L.) cv. Isfahan, at Agricultural Research Station of Kerman University, using randomized complete block design ...
Read More
Field studies were conducted over two growing seasons to study the effects of foliar application of cycocel (CCC) at early growth stage on grain yield and its components of (Carthamus tinctorius L.) cv. Isfahan, at Agricultural Research Station of Kerman University, using randomized complete block design with three replications. In the first year, the effects of 0, 1000 and 2000 mgL-1 was studied. Compared with control treatment, CCC had no effects on stem diameter and length, but significantly increased total branches, leaf number, flower head biomass, flower head number, 1000-grain weight, seed yield and biological biomass, with no effect on seed oil, seed protein percentage and harvesting index. In the second year, the effects of 0, 1000, 2000, 3000 and 4000 mgL-1 was studied. Compared with control treatment, cycocel up to 3000 mgL-1 increased total and lateral branches, flower head number, flower head biomass, 1000-grain weight, grain yield and biological biomass. In some cases, 3000 mgL-1 CCC was more effective than other concentrations. However, it can be concluded that, 1000 mg/lit cycocel applied at early growth stage significantly increases grains in safflower.
