مسلم عبدعلي عبد الحسين الربيعي

This study was conducted to examine the effect of adding different concentrations of nano silver nitrate (0, 5, 10 and 15 mg L-1) and zinc source {traditional(0.86mg L-1 as ZnSO4.7H2O) and nano zinc 0.086mg L-1 as Zinc oxide) to the specifies medium of rooting strawberry (Fragaria X ananassa Duch) cv. Rubygem, in addition to testing the efficiency of nano silver nitrate and zinc source on successful percentage of cultures adapting stage. Results revealed that highest rooting percentage, root numbers, roots length, leaves content of total chlorophyll and macro nutrients (N, P and K) were achieved the highest average at 10mg L-1 + nano zinc treatment. The source of cultures resulting from rooting stage affected the plant survival at acclimatization stage. The treatment 10 and 15mg L-1 of nano silver nitrate + nano zinc achieved 100% success percentage.

Strawberry (Fragaria ananassa Duch), belong to Rosaceae family, is widely appreciated,mainly for its fruit characteristic aroma, bright red color, juicy texture, It is traditionallyasexually propagated by rooted runners. To improve the strawberry varieties this method wasnot suitable due to incidence of many serious diseases infection resulting in the gradualdegeneration of cultivars performance, so micropropagated strawberry plant has beenintroduced to prevent most of the plant and soil transmissible diseases. Micropropagatedstrawberry has several advantages, such as its ability to multiply virus free stock rapidly and,the improved capacity of these plants to produce runners for planting in the field. In thisstudy, it was aimed to examine the interaction of BA, IBA and AgNO3 combinations atdifferent micropropagation stages. Results showed the addition of AgNO3 to MS medium ledto increase shoot number, shoot length, fresh and dry weight at multiplication shoots stage,shoots rooting % and root number at rooting stage. Survival plants %, plant height, leavesnumber and dry weight at acclimatization stage. (14) (PDF) Effects of AgNO3 in combination with some plant growth regulators on micropropagation of strawberry (Fragaria ananassa Duch). Available h_Effects_of_AgNO3_in_combination_with_some_plant_growth_regulators_on_micropropagation_of_strawberry_Fragaria_ananassa_Duch [accessed Feb 07 2023].

The study was conducted in the Date palm micropropagation unit in vitro at College of Agriculture, University of Kufa during the period 2015 to 2016 to show the effect of the growth regulator (Paclobutrazol) that was added to the nutrient media at a concentration of (0, 5, 10, 15 mg.L-1) and its interaction with sucrose at a concentration of (30, 60, 80 g.L-1) in the program of micropropagation of date palms (Barhee cultivar) via direct organogenesis in the multiplication stage after culturing the quarters of the apical meristem. The study results showed that the biomass cultivated in the multiplication media (MS) that provided with 5 mg.L-1 Paclobutrazolrecorded the highest average number of buds (33.4 bud) and dry weight (1.050 g). The concentration of 10 mg.L-1 recorded an increase in the number of formed shoots (10.89 shoots), It did not have a significant effect on the fresh weight of the biomass. As for the effect of sucrose, the addition of (60 g.L-1) led to recording the highest average for the trait of number of formedshoots (17.67 shoot) and fresh and dry weight of biomass (6.56, 1.617g), respectively.While it did not have a significant effect in the number of multiplied buds.

Bashika Olive trees (Olea europaea L.) were sprayed twice at full bloom stage and one month after that one with dry yeast suspension (5, 10g.L-1) and amino acid (1, 2ml.L-1), alone and in combination besides control (spraying with water only) during 2017 and 2018 growing seasons. Results showed that foliar spraying of dry yeast suspension at 10g.L-1 with amino acid 2ml.L-1 gave the highest significant value of vegetative growth( leaf area, total chlorophyll leaf content) and foliar spraying of dry yeast suspension at 10g.L-1 with amino acid 1,2ml.l-1 gave the highest significant value of carbohydrate leaf content and carbohydrate shoot percentage in first season and dry yeast suspension at 10g.L-1 with amino acid 2ml.L-1 in second season. Also, results showed that dry yeast suspension at 5g.L-1with amino acid at 1ml.L-1 exhibited increase of fruit weight and fruit flesh weight in both seasons respectively. While, dry yeast suspension at 10g.L-1with amino acid at 1ml.L-1 treatment gave the highest significant average yield per tree-1in first and dry yeast suspension at 10g.L-1with amino acid at 0 ml.L-1 in second season. Treatment of dry yeast suspension at 10g.L-1with amino acid at 0,1and 2 ml.L-1 gave the highest significant value of fruit protein content in the first season and dry yeast suspension at 10g.L-1with amino acid at 1,2 ml.L-1 in seconed season, Dry yeast suspension at 10g.L-1with amino acid at 1,2 m.L-1 treatment gave the highest significant value of fruit oil content in both seasons respectively and highest value of percentage of unsaturated fatty acids in the first season

Two modern rose varieties, Floribunda and Hybrid Tea, were used to analyze and identify metabolic changes after foliar application with benzyladenine (BA). Volatile organic compounds (VOCs) as metabolites were detected. Two pairs of doses of BA, at 11.16 and 17.87 mg/cm2, and 7.17 and 12.26 mg/cm2 were applied to the foliage of Hybrid Tea and Floribunda, respectively. Sampling time was optimized and treatment duration was 4 weeks. After treatment, the volatiles from the treated and untreated control roses were extracted using headspace solid-phase microextraction (HS-SPME) technology by three-phase fiber 50/30 µm divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS) and analyzed by gas chromatography (GC) coupled with a flame ionization detector (FID), and with mass spectrometry (GC-MS).The results showed that BA and its dose rate led to metabolic changes of treated roses in comparison with untreated controls. The number of VOCs extracted and detected from leaves, stem, rhizosphere and whole plants from the two rose varieties at doses rate of 17.87 and 12.26 mg/cm2 were 43, 65, 40 and 68 compounds for each plant material, respectively, for both rose varieties. Whilst the VOCs extracted and detected from both rose varieties for leaves, stem, rhizosphere and whole plants were 38, 61, 34 and 66 compounds for each plant material, respectively. The results demonstrate that some volatiles, such as 4-Heptyn-2-ol, Phenyl methyl ether and 3-Methyl-apopinene, increased with increasing doses of BA; these compounds are aroma chemicals with a very powerful smell. This study shows that BA treatments can have a significant effect on metabolite changes in different rose tissues. This method could be applied to other floriculture plants.

Hydroponic cropping technique was utilized for evaluation of salinity tolerance of certain genotypes of rice under prevailing arid conditions of Iraq. The conditions envelop low level of characteristic issue, calcium carbonate conglomeration of soil and soils containing clear measures of gypsum, delicate to coordinate profile progression and low natural development. The seedling test is simple, rapid (4 to 6 weeks) and accurate. Furthermore, this test allows the screening of several seedlings under various experimental parameters. Therefore, the three genotypes of IRRI rice (IR71999-3R-3-2-2B-1-1, IR71829-3R-82-1-1and IR63731-1-3-3-2) and two varieties of rice (Anber and Jasmine) under salinity stress (1.2, 4, 8 and 10 dS/M) were investigated. The experiment was conducted in a growth chamber under simulated arid conditions in a completely randomized distribution. Salt stress caused reductions in rice plant production (yield) reached more than 30%. Dry matter weight was decreased by 24% in all varieties ofrice. Sodium (Na+) concentration was significantly (p ≤ 0.05) higher in NaCI-treated plants. The Na+/K+ and Na+/Mg2+ ratio in IRSSTN-SS2 (IR71999-3R-3-2-2B-1-1, IR71829-3R-82-1-1) genotypes and Anber plant indicate that it is more susceptible to salinity than the rice verities. Consequently, this cultivar is more vulnerable to saltiness than the assortment Cotaxtla, which demonstrated more noteworthy resistance to this anxiety