F. Heidari; F. Shekari; B. Andalibi; J. Saba
Abstract
In order to investigate the effects of growth regulators on yield and agronomical characteristics of saffron (Crocus sativus L.), an experiment was conducted in a randomized complete block design in the research greenhouse of Faculty of Agriculture, University of Zanjan. Experimental treatments included ...
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In order to investigate the effects of growth regulators on yield and agronomical characteristics of saffron (Crocus sativus L.), an experiment was conducted in a randomized complete block design in the research greenhouse of Faculty of Agriculture, University of Zanjan. Experimental treatments included corms priming with gibberellic acid (GA) (250, 500 and 750μM), salicylic acid (SA) (700, 1400 and 2100μM), paclobutrazol (PBZ) (50, 100 and 150μM), chlormequat chloride (CCC) (500, 1000 and 1500 μM), hydropriming (HP) (distilled water), and control (treatment without any growth regulator). Among the treatments, the effect of GA was more pronounced than other growth regulators, so that the highest dry yield of flower and stigma was observed in GA treatment, especially at 500-μM level. CCC and PBZ caused the lowest flower and stigma yield and the highest amount of chlorophyll pigments compared to other treatments. In contrast, the use of GA and SA reduced the chlorophyll content. HP treatment did not show any significant difference with control. SA treatment increased safranal (perfume) and crocin (color) of the stigmas. The highest effect on picrocrocin (flavor) was obtained in CCC treatment.
M. Gerdakaneh; J. Majidi; F. Rezaei
Abstract
Saffron (Crocus sativus L.) as a valuable crop is cultivated in arid and semi-arid regions of Iran. It is used in food for color and flavor and also in medicine. Optimum mother corm density and depth is one the most crucial factors determining daughter corm generation and flower yield. For this purpose, ...
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Saffron (Crocus sativus L.) as a valuable crop is cultivated in arid and semi-arid regions of Iran. It is used in food for color and flavor and also in medicine. Optimum mother corm density and depth is one the most crucial factors determining daughter corm generation and flower yield. For this purpose, this research was aimed to study the effects of planting density and depth of corm on stigma yield and daughter corms production traits during 2012-2014 in Mahidasht, Kermanshah province. The study was conducted in a factorial experiment based on randomized complete blocks design with four different planting densities (3, 6, 9, 12 cm) and three planting depths of corm (10, 15, 20 cm) in three replications. Traits including flower number, flower fresh weight, fresh and dry weight of stigma and style, stigma and style length, leaf weight, the number and average weight of daughter corm were measured. Analysis of variance showed that the effect of planting density and depth of mother corm was significant on total traits. The interaction effect between planting density and planting depth on some traits (average weight of daughter corm and stigma and style length) was significant. The highest flower number, fresh flower weight, total fresh and dry weight of stigma and style (2.09 and 0.5 gr/m2, respectively), leaf weight, and daughter corm number were obtained in planting density of 6 cm and planting depth of 15 cm. The highest length of stigma and style of saffron was achieved in planting density of 9 cm and planting depth of 15 cm, and the average weight of daughter corm was obtained in planting density of 12 cm and planting depth of 15 cm. Therefore, the planting density of 6 cm and planting depth of 15 cm, having the highest effect on fresh and dry weight of stigma, are recommended.
F. Ghobadi; M. Ghorbani Javid; A. Sorooshzadeh
Abstract
This research was aimed to evaluate the flower and stigma yield as well as growth traits of saffron (Crocus sativus L.) under effect of planting dates and corm size. The experiment was factorial in a complete randomized design with three replicates, conducted at the research farm of College of Aburaihan, ...
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This research was aimed to evaluate the flower and stigma yield as well as growth traits of saffron (Crocus sativus L.) under effect of planting dates and corm size. The experiment was factorial in a complete randomized design with three replicates, conducted at the research farm of College of Aburaihan, University of Tehran during 2013-2014. The treatments consisted of four planting dates (June 10th, September 7th and 27th, and October 12th) and two corm weights (5-9 g and 10-14 g). Our results showed that the flower and stigma yield of large corms, planted on June 10th, was 50% higher as compared with other planting dates, and on September 27th, the yield was 25% higher. However, this difference was not significant in comparison with September 7th. The lowest flower and stigma yield was recorded for the planting date of October 12th in comparison with other planting dates, and these traits were higher in large corms as compared with small ones in all planting dates. The flower length and number of buds on June 10th were higher than that of others. In addition, the highest leaf dry weight and length in primary and secondary buds were recorded for the planting dates of June 10th and September 6th, which could be effective in production of daughter corms in the next year. The results showed that all growth characteristics in large corms were higher than that of small ones. Overall, these results indicate that the planting of 10-14-gram large corms on June 10th can improve the yield and growth characteristics of saffron in Varamin plain.
S.M. Hosseini; A. Sorooshzadeh; S.A.M. Modares Sanavi
Abstract
The objective of this research was to study the effect of substrate culture, axillary bud removing and mother corm size on daughter corm production and morphological traits of saffron plant (Crocus sativus L.) An experiment was carried out in factorial based on completely randomized design with four ...
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The objective of this research was to study the effect of substrate culture, axillary bud removing and mother corm size on daughter corm production and morphological traits of saffron plant (Crocus sativus L.) An experiment was carried out in factorial based on completely randomized design with four replications. Treatments included mother corm size (large 9.5-11 g or medium 6-7.5 g) substrates (perlite or soil), axillary buds removing (removing all axillary buds or no removing axillary buds). Results showed that the mother corm size had a significant effect on leaf dry weight, root dry weight, total dry weight of plants, daughter corm weight, and number of daughter corms. In addition, the large corms caused an increase in these traits. The highest root dry weight, root number, daughter corm dry weight, and total dry weight of plant were obtained in the perlite substrate. It was observed that the plants grown in the soil produced more as compared to those grown in the perlite. Although, root number and daughter corm size increased by the axillary buds removing, the number of daughter corms decreased by this treatment.
B. Ghavami; H. Zeinali; M. Khosrowchahli; S. Davazdahemami
Abstract
Crocus sativus L. is one of the most important medicinal plants and expensive spice in the world. This study was carried out to evaluate morphological traits and picrocrocin composition of 27 genotypes derived from different regions of country. Twenty-seven genotypes were cultivated in a randomized complete ...
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Crocus sativus L. is one of the most important medicinal plants and expensive spice in the world. This study was carried out to evaluate morphological traits and picrocrocin composition of 27 genotypes derived from different regions of country. Twenty-seven genotypes were cultivated in a randomized complete blocks design with three replications at Shahid Fozveh Station of Esfahan Research Center of Agriculture and Natural Resources. Stigma yield, flower fresh weight, number of flower, number of days to appearance of the first flower, plant height at flowering stage, flowering period and picrocrocin content were measured. Variance analysis of data showed significant differences among genotypes for all traits (p<0.01). Based on mean comparison, the highest and the lowest number of days to appearance of the first flower were recorded for Hamedan genotype and Ghaen and Boshroye genotypes, respectively. The variation range of picrocrocin varied from 0.425 to 0.681. Neishaboor and Esfahan genotypes had the highest and the lowest stigma yield, respectively. In addition, the highest number of flower was recorded for Neishaboor genotype. Cluster analysis divided the genotypes in to seven clusters. According to the obtained results, the genotypes classified in the 6th cluster showed appropriate traits of stigma yield, flower fresh weight, number of flower, flowering period, and number of days to appearance of the first flower. Results of this study revealed considerable variation among the genotypes probably because of the variety of ancestors or mutation phenomenon. Our results showed no relationship between agronomic diversity and geographic distribution.
