per
Crop Science Society of Iran
Iranian Journal of Crop Sciences
1562-5540
2717-0527
2017-05
19
1
1
12
article
Effect of foliar application of Zn, Fe and Mn on seed yield and micronutrient contents of safflower (Carthamus tinctorius L.)
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2
3
This experiment was conducted to determine the effect of zinc (Zn), iron (Fe) and manganese (Mn) foliar application on seed yield and nutrient contents of irrigated safflower during three years (2010-2013) in a soil with low concentration of available Zn, Fe and Mn. The experiment was conducted in Chardavol field station in northern Ilam province, Iran. Experimental treatments included; control (without Zn, Fe and Mn application), foliar application of water, and foliar application of Zn, Fe, Mn, Zn+Mn, Zn+Fe, Fe+Mn and Zn+Fe+Mn using randomized complete block design with three replications. Results indicated that the effect of foliar application of micronutrients on seed and oil yield of safflower was significant. Mean comparison showed that the highest seed yield was obtained from foliar application of Zn+Fe+Mn with 1472 kg.ha-1which was 12.9 and 12.4 percent higher than seed yield in control (without foliar application) and foliar application of water, respectively.. Seed oil yield was significantly higher in foliar application of Zn+Fe+Mn (421 kg.ha-1) and Zn+Mn (411 kg.ha-1) in comparison with control. It can be concluded that highest seed yield and seed oil yield were obtained from foliar applications of Zn+Fe+Mn and Zn+Mn, respectively.
http://agrobreedjournal.ir/article-1-745-en.pdf
Foliar application
Micronutrients
Oil content of seed and Safflower.
per
Crop Science Society of Iran
Iranian Journal of Crop Sciences
1562-5540
2717-0527
2017-05
19
1
13
25
article
Evaluation of seed yield stability of oilseed rape genotypes in cold and temperate-cold environments
1
2
Genotype ´ environment interaction is one of the most important concepts in plant breeding which can be estimated using diffrerent statistical procedures. In this study, seed yield stability of 22 oilseed rape genotypes under normal and late sowing dates was evaluated during three cropping seasons (2011-14) in West-Islammabad filed station, Kermanshah, Iran. Results of combined analysis of variance showed significant differences between environments, among genotype, as well as genotype ´ environment interaction. Results also indicated that genotypes such as Hyola308, Zarfam, Shiralee, MHA01/18, Elite, Parade and Opera produced higher seed yield with 4487, 4475, 4442, 4408, 4350, 4333 and 4257 kg.ha-1, respectively. Results of AMMI analysis showed that four principal components of genotype ´ environment were significant at the 1% probability level. Proportional of sum of squares for the four principal components genotype ´ environment were 40.7, 28.5, 17.1 and 12.1 percent, respectively. Based on the first two principal components of genotype ´ environment, Parade, Kimberly, Elect, Goliath, Elite and Shiralee were positioned next to the center of biplot which implies high wide-adaptation. Simultaneous selection for stability and seed yield identified Shiralee, Hyola308, Zarfam, Parade, MHA01/18 and Kristina as high yielding and stable genotypes.
http://agrobreedjournal.ir/article-1-746-en.pdf
AMMI analysis
Genotype
Interaction effect and Rapeseed
per
Crop Science Society of Iran
Iranian Journal of Crop Sciences
1562-5540
2717-0527
2017-05
19
1
26
39
article
Study of genotype × environment interaction effect on seed yield of red bean (Phaseolus vulgaris L.) genotypes using AMMI method
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3
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5
6
To study genotype, environment, genotype × environment interaction effects for grain yield on red bean, ten red bean genotypes were evaluated at five locations (Borujerd, Zanjan, Shahrekord, Tabriz, and Khomein) for two cropping seasons (2012- 2014). The experiment was conducted using a randomized complete block design with three replications. Combined analysis of variance for grain yield showed that the main effects of both genotypes and environments, and the genotype × environment interaction effect, were highly significant. Average environmental grain yield across genotypes ranged from lowest of 1615.8 kg.ha-1 in Shahrekord in 2012 to the highest of 4069.8 kg.ha-1 in Borujerd in 2013. Environment main effect was the main source of variation that accounted for 61% of the total yield variation. Analysis of variance of additive main effects and multiplicative interaction (AMMI) showed that eight IPCAs were significant and residue effects (noise) was considered zero. The first three main components of AMMI model explained 79.8% of the total yield variation. Genotype KS31290 was identified as the most stable genotype based on the values of the first three main components, ASV and D parameter. Genotype KS31285 with the highest ASV and D parameter, and the most distance from the center of biplot was unstable genotype. However, this genotype had higher yield (2900 kg.ha-1). Based on the results of this experiment, KS31290 can be considered as a promising line for being released in areas with similar climatic conditions as those in experimental sites.
http://agrobreedjournal.ir/article-1-747-en.pdf
D parameter
Genotype×environment
Genotype stability index (GSI) and Red bean.
per
Crop Science Society of Iran
Iranian Journal of Crop Sciences
1562-5540
2717-0527
2017-05
19
1
40
56
article
Effect of foliar application of brassinolide on grain yield and yield components of bread wheat (Triticum aestivum L.) cv. Sirvan under terminal drought stress conditions
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3
4
To evaluate the effect foliar application of different concentrations of brassinolide on water productivity, grain yield and yield components of bread wheat (cv. Sirvan) under drought stress conditions, an experiment was carried out as spilt factorial arrangements using randomized complete block design with three replications at Zarghan filed station, Fars Province, Iran, dutring 2014-15 and 2015-16 growing seasons. Three levels of irrigation; optimum, withholding irrigation from flowering to grain filling stage and withholding irrigation during grain filling stage were assigned to main plots, and foliar application of brassinolide concentrations in three levels 0, 0.05 and 0.1 mg.l-1 and two timing of foliar application, before flowering and before grain filling, as factorial were randomized in sub-plots. Results showed that increasing foliar application of brassinolide concentration increased grain yield and water productivity under drough stress conditions. The lowest grain number per spike, thousand grain weight, grain yield, biological yield and harvest indexbelonged to drought stress from flowering to grainfilling stagewhich were reduced by 18.3, 13.1, 21.25, 11.33 and 11.78 percent, respectively, when compared to optimum irrigation conditions. The application of 0.1 mg.l-1 brassinolide increased grain number per spike by 9.17 percent, thousand grain weight by 6.62 percent and grain yield by 7.3 percent compared with contol. The highets water productivity (1.01kg.m-3) was observed in 0.1 mg.l-1 brassinolide application and also the longest duration to physiological maturity (193.5 day) was recorded in 0.1 mg.l-1 brassinolide application and optimum irrigation. The results of this study showed that drought stress from flowering to grainfilling stage had the most negative effect on bread wheat cv. Sirvan grain yield and foliar application of 0.1 mg.l-1 brassinolide improved this negative effect to some extent.
http://agrobreedjournal.ir/article-1-748-en.pdf
Brasinosteroid
Drought stress
Thousands grain weight
Water productivity and Wheat.
per
Crop Science Society of Iran
Iranian Journal of Crop Sciences
1562-5540
2717-0527
2017-05
19
1
57
72
article
Evaluation of growth type and drought stress adaptation in Hordeum spontaneum L. ecotypes
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2
This study aimed to evaluate the diversity and distribution of growth type in Hordeum spontaneum ecotypes and its relation with climate and drought adaptationsfor being used in barley breeding programs. Eighteen ecotypes of H. spontaneum from National Plant Gene Bank of Iran were evaluated in green house and field in 2011-12 cropping seasons. The green house study was the drought stress tolerance screening and the growth type of ecotypes was evaluated in the field. Both experiments were carried out in randomized complete block design with three replications. In the green house study the moisture condition was normal until spike emergence, then two different moisture regimes; well-watered (90-100% field capacity) and drought stress (20-30% field capacity) were applied. The field study consisted of evaluating vernalized and non-vernalized seeds. Assessment of growth type indicated that Desert and Cool Desert ecotypes had the growth type III, but Mediterranean and Cool Steppe ecotypes had IV and V growth type. A significant correlation was observed between stress tolerance index and growth type and ecotypes with lower vernalization requirements seemed to have better adaptability to drought stress conditions. Results indicated that wild barley originating from Desert and Cool Desert, with low vernalization requirement and early maturity, were more tolerant to drought stress, therefore, these valuable genetic resources can be used directly (gene transfer) and indirectly as parents in breeding programs for improvement of drought stress adaptation.
http://agrobreedjournal.ir/article-1-749-en.pdf
Barley
Climate
Drought stress
Ecotype and Growth type.
per
Crop Science Society of Iran
Iranian Journal of Crop Sciences
1562-5540
2717-0527
2017-05
19
1
73
85
article
Evaluation of drought tolerance in forage sorghum
(Sorghum bicolor L. Moench) promising lines
1
To evaluate the drought tolerance in forage sorghum promising lines, a filed experiment was conducted as split plot arrangement using randomized complete block design (RCBD) with three replications at the Research Farm of Seed and Plant Improvement Institute, Karaj, Iran, in 2011 and 2012 growing seasons. Main plots consisted of three irrigation regimes (irrigation after 60, 120 and 180 mm evaporation from class-A Pan) and sub-plots included five forage sorghum promising lines (KFS2, KFS3, KFS12, KFS17 and KFS18). Combined analysis of variance showed that the effect of irrigation regimes on fresh and dry forage yield and plant height was significant (P ≤ 0.01). Under sever drought stress the highest forage yield was obtained from KFS3, KFS2 and KFS18 lines (112.3, 97.5 and 95.9 t.ha-1 respectively). Results revealed that stress tolerance index (STI), geometric mean productivity (GMP) and mean productivity (MP) indexes had significant positive correlations with forage yield under stress and non-stress conditions and were identified as suitable indices for screening of forage sorghum promising lines. The results of biplot analysis indicated that KFS3 line with the highest STI (1.18) had high forage yield potential and low susceptibility to drought stress. The results of multivariate biplot analysis and correlation of indices using forage yield data under stress and non-stress conditions showed that MP, GMP and STI were the suitable indices for predicting forage yield of sorghum promising lines and superior genotypes could be selected based on these indices. KFS3 promising line was identified as highly adpated forage sorghum genotype to drought stress condition.
http://agrobreedjournal.ir/article-1-750-en.pdf
Biplot
Forage sorghum
Forage yield
Promising lines
Stress tolerant indices.