Defense responses of cotton seedling to Trichoderma elicitors
F.
Azad Disfani
استادیار موسسه تحقیقات پنبه کشور
author
H.
Rohani
استاد دانشگاه فردوسی مشهد
author
M.
Falahati Rastegar
استاد دانشگاه فردوسی مشهد
author
E.
Mahdikhani Moghaddam
دانشیار دانشگاه فردوسی مشهد
author
text
article
2014
per
Seedling damping-off is a major disease of cotton in various areas of Iran that damages to cotton fieldsevery year.Recently,Trichoderma spp. areconsidered as one of the biological agents forseedling damping-off controll.Induction of plant defensive system is the most important mechanism to biocontrol ofTrichoderma spp. In this study, extra-cellular flouids derived from culture filtrates of two isolatesof Trichoderma virensaseffective biocontrol on cotton seedling damping-offcausedby Rhozoctonia solaniisolate A224 andnoneffective biocontrolisolateA442 were studied. The characteristics of elicitation activity were assayed by peroxidase and gossypol level of rootlet extracts and were evaluated by colorimetric methods and spectrophotometer. Biochemical and physical aspects of elicitore compounds of culture filtrates were measured too.The results showed that culture filtrates from effective biocontrol isolate A224 of Trichoderma virens was found to stimulate elicitore compounds (peroxidase and gossypol) in cotton radicle than noneffective biocontrolisolateA442 of T.virens.The results confirmedthese elicitors were found to be heat stable, insoluble in chloroformand sensitive to treatment by proteinase K. The elicitors are most likely proteins or glycoproteins.
Iranian Journal of Cotton Researches
Cotton Research Institute of Iran
2345-5306
2
v.
1
no.
2014
1
17
https://jcri.areeo.ac.ir/article_100641_8d4fa436bdcdf611a9efeed52c812c9b.pdf
dx.doi.org/10.22092/ijcr.2014.100641
Statical analysis of correlation between yield and earliness, and other trait of upland cotton varieties (Gossypium hirsutum)
M.
Vafaie-Tabar
Assistant Prof., of Agricultural Research Center, Varamin
author
Z.
Tajik Khaveh
M.Sc. Student of Payam-e-Noor University, Tehran
author
text
article
2014
per
In this study, 11 cotton varieties (G. hirsutum) along with two checks treatments were studied using a randomized complete block design with four replications at Varamin cotton research department to evaluation of correlation between yield and earliness with other quantitative traits in 2008. Agro-morphological and fiber quality of the cultivars were recorded and correlation between yield and earliness with other traits were calculated based on them for each variety. Step wise regression of yield and earliness as independent variables and other traits as dependent variables were calculated separately to each cultivar. The results showed there is a high variation among cultivars regarding correlation between yield and earliness with other traits. The variation also existed among cultivars in term of those traits which entered the multiple regression models as dependent variables. These variations among cultivars are useful in the further breeding programs in view of breaking undesired correlations of the traits and improving them simultaneously in the current cultivars.
Iranian Journal of Cotton Researches
Cotton Research Institute of Iran
2345-5306
2
v.
1
no.
2014
19
34
https://jcri.areeo.ac.ir/article_100642_c63a9ab9312f0f98459e3384c9175e77.pdf
dx.doi.org/10.22092/ijcr.2014.100642
Introduction and identification of Solanum elaeagnifolium cavanilles in cotton farms
M.
Arabsalmani
Assistant Prof., Agriculture and Natural
Resources Research Center of Tehran province
author
E.
Farahani
Expert and Research Agriculture and Natural Resources Research Center of Tehran province
author
H.R.
Saeedi
Expert and Research Agriculture and Natural Resources Research Center of Tehran province
author
text
article
2014
per
Solanum elaeagnifolium is a woody perennial, seed or vegetative propagated and broadleaved herbaceous. It has branching stems up to 1 m height that often is cease aerial growth during winter and extensive root system spreads to 2 m deep. Invasions of croplands and pastures by S. elaeagnifolium are most conspicuous during midsummer when the plants are flowering. The life cycle of the plant is composed of 5 phases: vegetative regeneration and germination during spring; vegetative development duration which depends on the biotope; flowering from spring to the end of summer and fructification from the end of spring until autumn. S. elaeagnifolium has a negative impact mainly on crop production as like as on livestock production, environment, trade and international relations. This species was reported from cotton fields of Tehran province for the first time in 2013.
Iranian Journal of Cotton Researches
Cotton Research Institute of Iran
2345-5306
2
v.
1
no.
2014
35
54
https://jcri.areeo.ac.ir/article_100643_9290eb8093631121e163ad26d1594cfa.pdf
dx.doi.org/10.22092/ijcr.2014.100643
Yield and yield components of three varieties of cotton, under the influence of different densities
M.
Jafaraghaei
Scientific staff members, Agricultural and Natural Resources Research Center of Isfahan, Iran
author
A.H.
Jalali
Scientific staff members, Agricultural and Natural Resources Research Center of Isfahan, Iran
author
text
article
2014
per
The effect of planting density on yield and yield components of three varieties of cotton were studied in Agriculture and Natural Resources Research Center, Isfahan during 2 years. Experiment was done using a factorial experiment in randomized complete block design with four replications. Tabladyla, B557 and Varamin (control) cultivars were considered as the first factor and three planting densities 7.1, 9.5 and 14.3 plant m-2 as the second factor, respectively. By results, there was a statistically significant difference between the cultivars. B557 varieties, with production of 5,471 kg ha-1, had highest yield in this study. The first and second years, 55 and 64 percent of the yield of was obtained the first harvest respectively. B557 produced significantly more boll number than others. Boll weight showed no-significant difference. Effect of various planting densities and the interaction of density and varieties on yield and yield components were not statistically significant. The lowest densities used in this study (7.1 plant m-2) had the lowest percentage of stand plants in a hectare. Density of 14.3 plants m-2 meter with 116.2 cm in height had the highest amount. According to the results of this study, cultivars can tolerated a wide range of densities without loss of performance. On the other hand, the yield potential of the B557 cultivar is higher than the other two varieties.
Iranian Journal of Cotton Researches
Cotton Research Institute of Iran
2345-5306
2
v.
1
no.
2014
55
64
https://jcri.areeo.ac.ir/article_100644_e729928caab2753fc9d66f288cf43392.pdf
dx.doi.org/10.22092/ijcr.2014.100644
Study the effect of Salinity on accumulation of ions in seven cotton cultivars Gossypium hirsutum L.
M.
Shabdin
Islamic Azad University, Gorgan Branch, Iran
author
M.A.
Rezaei
Islamic Azad University, Gorgan Branch, Iran
author
O.
Alishah
Cotton Research Institute of Iran, Gorgan
author
S.J.
Mirgasemi
Cotton Research Institute of Iran, Gorgan
author
text
article
2014
per
A pot experiment was carried out to study the effect of different soil salinity on physiological characteristics of cotton plant (Gossypium hirsutum) and determining of resistant cultivars as factorial arrangeed by completely randomized design with 3 replications. Cotton cultivars were including Coker *349, Opal, Bol 539, N200, Acalas sj2* seland, Sahel, Sepid as first factor and levels of salinity in consist of nonesaline and saline, 0.6, 16.5ds/m as second factor. The results showed that effect of salinity on, Na+, K+, Ca2+, Mg2+, Cl-, was significant at 1% probability and.Between cultivars, K+, Cl-, was significant at 1% probability and Na+, Ca2+, was significant at 5% probability and Mg2+, wasn't significant. With regard of total masured characteristic it refered that, Sepid and Sahel cultivars were more tolerant to salinity stress.
Iranian Journal of Cotton Researches
Cotton Research Institute of Iran
2345-5306
2
v.
1
no.
2014
65
74
https://jcri.areeo.ac.ir/article_100645_93a8fb1da066062d9140770e13e67ecc.pdf
dx.doi.org/10.22092/ijcr.2014.100645
Study of genetic diversity and relationships among some diploid and tetraploid cotton genotypes of Iran using RAPD's Marker
M.R.
Ramazani-moghaddam
Assistant Prof. Agricultural and Natural Resources, Research Center of Khorasan Razavi, Iran
author
E.
Majidi-haravan
Prof. Agriculture Biotechnology Research Institute, Karaj, Iran
author
H.R.
Zamani-zadeh
Associate Prof. Azad University, Science and Research unit, Tehran. Iran
author
S.A.
Mohammadi
Prof. Tabriz University, Agronomy and Plant Breeding Department, Iran
author
M.
Azizi
Assistant Prof. Agricultural and Natural Resources, Research Center of Khorasan Razavi, Iran
author
text
article
2014
per
Gossypium species (about 49 species) are vast resources of genetic diversity for improvement of cultivated cotton. To determine intra- and inter-specific genetic diversity and relationships, it was employed 30 RAPD's random decamer primers on twenty eight cotton accessions from 2 diploid cultivated species (G.arboreum, G.herbaceum) and 2 tetraploid cultivated species (G.hirsutum, G.barbadense). A total of 422 RAPD bands were amplified of which 88% (366) were polymorphic. Similarity indices estimated on the basis RAPD markers and cluster analysis based on similarity values showed high correspondence between RAPD marker system and known taxonomic relationships.
Iranian Journal of Cotton Researches
Cotton Research Institute of Iran
2345-5306
2
v.
1
no.
2014
75
91
https://jcri.areeo.ac.ir/article_100646_f8e2bfecbd82708b21cac25d457d7737.pdf
dx.doi.org/10.22092/ijcr.2014.100646
Integrated weed management effects on the growth characteristics and yield of cotton (Gossypium hirsutum)
S.
Mohammadi
1Researcher, Agricultural and Natural Resources, Research Center ofTehran
author
M.A.
Baghestani
Prof. Iranian Research Institute of Plant Protection
author
text
article
2014
per
In 2009, an experiment carried out in a farm at Agricultural Research and Natural Resources Center of Tehran (ARNRCT) to determine the best method of integrated weed management of in cotton fields. The experimental design was a split block design with four replications by 20 treatments. The main plots were consisted four levels of weed management practices including herbicide trifluralin along with one round and two-round hand weeding, untreated control weeds and fully control of all weeds. Sub plots were five cotton cultivars including Varamin, Oltan, Mehr, Sepid and Khordad. The results showed that among the methods, trifluralin herbicide application with two-stage hand weeding were the appropriate control treatments, while weed dry weight was reduced and cotton yield was increased in all cultivars. Optimal growth conditions with increasing height, producing vegetative and reproductive shoots, leaf area and canopy resulted in increased competitiveness in the cotton plants. Sepid variety despite lower height between varieties produced more leaves and stems dry weight, reduced dry weight of weeds. Oltan gained lowest yield among the varieties, due to the canopy structure and the type of growth. In contrast, Varamin and Khordad had dominate performance in the presence of weeds because of maximum height, number of reproductive shoots, number of nodes and shoot dry weight as more extensive canopy and good leaf coverage.
Iranian Journal of Cotton Researches
Cotton Research Institute of Iran
2345-5306
2
v.
1
no.
2014
93
104
https://jcri.areeo.ac.ir/article_100661_e79844d7f8b98bc4e985d13a8c2fa5a7.pdf
dx.doi.org/10.22092/ijcr.2014.100661
Effect of conservational tillage and plant density on two cottons cultivars yield
Maryam
Nowruozi
MSc. Bio-system mechanics engineering
author
Hosseinali
Shamsabadi
Assistant Professor, University of Agricultural Sciences and Natural Resources, Gorgan, Iran
author
shahram
Nowrouzieh
Assistant Prof., Cotton Research Institute of Iran
author
text
article
2014
per
In order to investigate the effects of different tillage systems, plant density and cultivar on yield of cotton, an experiment was carried out as a split - split plot in a randomized complete block design (RCBD) with 3 replications in Cotton Research Station of Hashemabad. Gorgan, Iran. The three tillage systems namely; 1) shallow tillage system (disk harrow), 2) reduced tillage system (cyclo tiller + disk harrow) and 3) conventional tillage system (moldboard + disk harrow) were assigned to main plots. The two cotton cultivars namely; Golestan and Khordad were considered as sub plot and three plant densities including 12.5, 6.3 and 4.2 plant per m2 were attributed to sub-sub plots. The results showed that tillage systems were no significant effect on yield of cotton. The lowest and the highest values of cotton yield were attributed to conventional and reduced tillage system, respectively. The two systems of reduced and shallow tillage systems yielded the lowest number of sympodia, length of monopodia and plant height; and the highest number of boll and 10 boll weights that caused an increase yield. With decreasing the plant distance from 30 to 10 cm, the number of boll and 10 boll weights were decreased, but the yield was increased with increasing in number of plant in a hectare. The highest value of yield cotton was attributed to Golestan cultivar at the reduced tillage plots and S1, with plant space of 10 cm.
Iranian Journal of Cotton Researches
Cotton Research Institute of Iran
2345-5306
2
v.
1
no.
2014
105
122
https://jcri.areeo.ac.ir/article_100662_ba365da1b7f3191e6adfffc5732782e3.pdf
dx.doi.org/10.22092/ijcr.2014.100662