Independent and combined effects of heat and drought stress in the Seri M82 × Babax bread wheat population     

Sirous Tahmasebi  Bahram Heidari  Hassan Pakniyat  Mohammad Reza Jalal Kamali 《Plant Breeding》2014,133(6):702-711

Heat and drought are the most important wheat production constraints worldwide. The objectives of this research were to evaluate the independent and combined effects of drought and heat in SeriM82/Babax population. Genotypes showed 11, 38 and 52% losses in grain yield (YLD) in 2010–11 and 18, 25 and 48% in 2011–12 under heat, drought and combined stress, respectively. Seri M82 had higher YLD than Babax under heat and combined stress. Grain per spike and canopy temperature at vegetative stage (CTv) in irrigated, day to heading and CT at grain‐filling stage (CTg) in drought, CTg and thousand‐grain weight (TGW) in heat and in combined trials were the best predictors of YLD. Results indicated that due to genotype by environment interactions not all stress‐adaptive traits could be accumulated in a single genotype. In general, day to heading, CTg and grain weight are suggested as indirect selection criteria for increasing YLD under heat and drought stresses. In particular, CTg could be used as a rapid and effective criterion for screening a high number of genotypes.  相似文献   

Erratum to: Induction of Transgenic Hairy Roots in Trigonella foenum-graceum Co-cultivated with Agrobacterium rhizogenes Harboring a GFP Gene     

Zeynab Shahabzadeh  Bahram Heidari  Reza Faramarzi Hafez 《Journal of Crop Science and Biotechnology》2014,17(1):51-51

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Relationship Between Degree of Starch Gelatinization and Quality Attributes of Parboiled Rice During Steaming     

Taghinezhad Ebrahim  Hadi Khoshtaghaza Mohammad  Minaei Saeid  Suzuki Toru  Brenner Tom 《水稻科学》2016,23(6):339

Paddy rice samples were parboiled by soaking at 65 °C for 180 min and steaming at 96 °C for 2–10 min, and then dried to achieve the final moisture content of 11% ± 1%. The degree of starch gelatinization(DSG) and several quality attributes(head rice yield(HRY), color value and hardness) of parboiled rice were measured. Results showed that DSG(46.8%–77.9%), color value(18.08–19.04) and hardness(118.6–219.2 N) all increased following steaming. In contrast, the HRY increased(64.8%–67.1%) for steaming times between 2–4 min but decreased(67.1%–65.0%) for steaming times between 4–10 min. Linear relations between DSG and color value(R~2 = 0.87), and DSG and hardness(R~2 = 0.88) were observed. The suitable DSG of parboiled rice leading to the highest HRY was found to be 62.5%, obtained following 4 min of steaming.  相似文献   

Effects of temperature and gonadal growth on the lysozyme level of immune tissues in the male and female Caspian kutum (Rutilus frisii kutum)          下载免费PDF全文

Behrooz Heidari  Fariba Farzadfar 《Aquaculture Research》2017,48(2):377-385

Lysozyme levels in the head kidney, spleen and liver tissues of the male and female Caspian kutum (Rutilus frisii kutum) were measured under monthly temperature variations and gonadal growth. The lysozyme content in all tissues of the male and female of the Caspian kutum showed almost a significant decreasing trend from October to March, coinciding with the lowest sea surface temperature and afterwards, it increased in April and May. In vitellogenic stage of the ovarian growth, the lysozyme level decreased in all three tissues and then increased significantly in the spawning stage. Over testicular growth, lysozyme level showed no remarkable variations from the early maturing to developed stages but increased in the spermiation stage. The regularity of lysozyme level in both sexes of the Caspian kutum was liver>spleen>head kidney. The effectiveness ratio (partial Eta²) of temperature and gonadal growth in the lysozyme variations showed that temperature factor was more highlight than gonadal growth. In conclusion, the liver similar to the kidney and spleen plays an essential role against pathogen as an organ of lysozyme producing in the Caspian kutum. In addition, the female lysozyme level was higher than the male in all studied tissues.  相似文献   

Evaluation of Plasticizing and Antioxidant Properties of Silver Carp Protein Hydrolysates in Fish Gelatin Film     

Atena Hasanzati Rostami  Seyed Ebrahim Hosseini  Masoud Rezaei  Abolghasem Kamali 《Journal Of Aquatic Food Product Technology》2017,26(4):457-467

Physico-mechanical and antioxidant properties of glycerol plasticized fish gelatin films were investigated at different levels of fish protein hydrolysates (FPH) from silver carp muscle (5, 10, 15, and 20 g FPH/100 g gelatin). The films supplemented with FPH, especially at higher concentration showed significant increase in 2, 2-diphenyl-1-picrylhydrazyl (DPPH), 2, 20-azinobis-(3-ethylbenzothiazoline-6-sulfnic acid) (ABTS) radical scavenging, and ferric reducing antioxidant power (FRAP), elongation at break, difference of color, water vapor permeability and opacity, while tensile strength, elastic modulus, L*, b*, and contact angle decreased markedly (p < 0.05). However, no significant differences were observed for a* and solubility of all samples (p > 0.05). Films prepared using 20% FPH had lower glass transition temperature and more homogeneous structure, compared with control film. Also, Fourier transform infrared (FTIR) spectroscopy confirmed the increase of free groups of hydrolysates and lower interaction between chains of film incorporated with the highest content of FPH. Thus, these results indicate that FPH enhanced the antioxidant activities and affected some characteristics due to less interaction between gelatin and FPH.  相似文献   

Occurrence and characterization of a new red-pigmented variant of Curtobacterium flaccumfaciens,the causal agent of bacterial wilt of edible dry beans in Iran     

Ebrahim Osdaghi  S. Mohsen Taghavi  Habiballah Hamzehzarghani  Amal Fazliarab  Robert M. Harveson  Jay Ram Lamichhane 《European journal of plant pathology / European Foundation for Plant Pathology》2016,146(1):129-145

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Factors affecting the seed germination and seedling emergence of muskweed (Myagrum perfoliatum)          下载免费PDF全文

Saeid J. Honarmand  Iraj Nosratti  Khadije Nazari  Hassan Heidari 《Weed Biology and Management》2016,16(4):186-193

Myagrum perfoliatum is a noxious broad‐leaved weed in western Iranian farming systems. A better understanding of the timing of seedling emergence would facilitate the development of better control strategies for this weed. Therefore, the objective of this study was to examine the effects of different factors on muskweed seed germination. Only 2.8% of the seeds of this species, which are encapsulated in siliques, germinated by, while the seeds that had been removed from the siliques had a 50% germination rate. The immersion of muskweed fruits in concentrated sulfuric acid for 110 min was the best treatment for promoting germination. Gibberellic acid stimulated the germination of the naked seeds by 29.1%, potassium nitrate (40 mmol L^‐1) increased the germination rate to 71%, while higher concentrations of potassium nitrate inhibited germination. The optimum germination temperature for the naked seeds was 20/10°C (day/night) and light was not required for germination. No seedling emerged when the seeds were buried 6 cm deep. The seeds were sensitive to both osmotic and salinity stress, but they germinated to 46–49% over a pH range of 4–10. The results of this study revealed that the seeds of M . perfoliatum have physiological dormancy and that it is slowly broken via after‐ripening. However, the fruit wall can prevent germination after physiological dormancy is broken. Thus, this species has the potential to form a persistent seed bank because of the presence of the fruit wall.  相似文献   

Dietary soybean phosphatidylcholine affects growth performance and lipolytic enzyme activity in Caspian brown trout (Salmo trutta Caspius) alevin     

Abdolmohammad Abedian Kenari  Ebrahim Sotoudeh  Mehran Habibi Rezaei 《Aquaculture Research》2011,42(5):655-663

The effects of supplemental dietary phosphatidylcholine (PtCho) on the growth performance, survival and digestive enzyme activity of Caspian brown trout (Salmo trutta caspius Kessler 1877) alevins were investigated in this study. Alevin (initial weight 0.8 ± 0.12 g) was fed for 5 weeks with an isoproteic‐ and isolipidic‐formulated diet with increased levels of PtCho from 0 to 60 g kg^?1 dry matter and decreasing levels of soybean oil. The increase in dietary PtCho up to 4% led to an increase in alevin final weight, suggesting that moderate PtCho levels are needed during this stage of Caspian brown trout. Survival was not affected by the dietary PtCho level. Phosphatidylcholine incorporation into the diet caused higher phospholipase A2‐specific activity. Phosphatidylcholine did not show a beneficial effect on the specific activity of amylase and protease. Lipase‐specific activity was significantly higher in the PtCho groups compared with the control group. The hepatosomatic index (HSI) was significantly influenced by the dietary PtCho level. The results of the present study indicated that the dietary supplementation of PtCho in the diet of Caspian brown trout alevin improved growth and lipolytic enzyme activity.  相似文献   

Growth response,body composition and fatty acid profile of Caspian brown trout (<Emphasis Type="Italic">Salmo trutta Caspius</Emphasis>) juvenile fed diets containing different levels of soybean phosphatidylcholine     

Ebrahim Sotoudeh  Abdolmohammad Abedian Kenari  Mehran Habibi Rezaei 《Aquaculture International》2011,19(4):611-623

We investigated the effects of soybean phosphatidylcholine (PtCho) on the growth, fatty acid (FA) profile, and body composition of juvenile Caspian brown trout. Juvenile trout, initial average weight 0.8 ± 0.12 g, were fed semi-purified formulated diets supplemented with 2, 4, and 6% PtCho for 5 weeks. Results showed that fish with diets containing 4 or 6% PtCho had significantly greater growth. The FA profiles of both the polar lipids (PL) and neutral lipids (NL) in juvenile tissues were influenced by dietary FA, although the effects of PtCho supplementation were more marked for PL than for NL. Fish fed PtCho in the diet also had higher levels of 18:2n-6, 20:4n-6 and n-6, and significantly lower levels of docosahexaenoic acid and eicosapentaenoic acid in both PL and NL. The lipid contents of whole-body tissues and liver were positively affected by PtCho percentage in the diet. Specific growth rate, hepatosomatic index, visceralsomatic index, and protein efficiency ratio were also significantly influenced by dietary PtCho. The results of our study indicate that dietary PtCho has a growth-promoting effect and that juvenile Caspian brown trout have a relatively moderate PtCho requirement (at least 4% dry weight of the diet).  相似文献   

Fractal analysis of the infiltration curve and soil particle size in a semi-humid watershed     

Ebrahim Omidvar 《European Journal of Soil Science》2021,72(3):1373-1394

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