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Perfect 2-Colorings of k-Regular Graphs
Piri, Farzaneh,Semnani, Saeed Mohammadian Department of Mathematics 2020 Kyungpook mathematical journal Vol.60 No.2
We study perfect 2-colorings of regular graphs. In particular, we consider the 4-regular case. We obtain a characterization of perfect 2-colorings of toroidal grids.
Kazem Arzani,Farzaneh Bahadori,Saeed Piri 한국원예학회 2009 Horticulture, Environment, and Biotechnology Vol.50 No.2
Vegetative and reproductive responses of mature peach (Prunus persica) trees cultivars ‘J.H. Hale’ and ‘Red Skin’ on ‘Montclar’ peach seedling rootstock to soil applied paclobutrazol (PBZ) were examined under Moghan, Iran environmental conditions. PBZ was soil drenched at 0 (control), 0.5 (L-PBZ), and 1.5 gㆍtree?¹ a.i. (H-PBZ) with six replications. PBZ significantly reduced vegetative growth during the experiment. Total pruning dry weight, shoot growth, and trunk cross sectional area of PBZ-treated trees were reduced compared to those of controls, with H-PBZ being more effective than L-PBZ. PBZ treatments advanced flowering and time of fruit harvest on ‘J.H. Hale’ and ‘Red Skin’ by 2-4 and 2-7 days, respectively, in the following season. PBZ treatments increased flower and fruit densities, fruit set, crop density, yield and yield efficiency in both cultivars in the following season. Similarly, the total number of fruits in the second season was increased in both cultivars by PBZ treatments. However, fruit size was smaller in the PBZ treatments than control. The effects of PBZ treatments and cultivars on total soluble solids, total fruit sugars, and fruit acidity were not significant. Leaf N and P was not influenced by any PBZ treatments, but Ca and K concentrations were increased by H-PBZ. In conclusion, H-PBZ was the most effective in reducing vegetative growth and promoting reproductive growth.
Ali Mehrban Jafarlou,Saeed Piri Pirivatlo,Behrouz Salehi,Amir Hoshang Hoseynzadeh Mogbli 한국작물학회 2021 Journal of crop science and biotechnology Vol.24 No.4
This survey is aimed at the assessment of the possible efect of diferent plant growth regulators (PGRs) on the micropropagation of commercial sweet cherry rootstocks Gisela 12 (Prunus cerasus×Prunus canescens), and Maxma 14 (Prunus avium×Prunus mahaleb). To study Gisela 12 and Maxma 14 micropropagation were assessed utilizing lateral buds. The treatments used for the establishment and shoots proliferation included MS medium fortifed by benzyl amino purine (BAP) (0.0, 0.5, 1.0, 1.5 and 2.0 mg L−1) and indol-3-butyric acid (IBA) (0, 0.25, 0.50 and 1.0 mg L−1). For rooting, IBA was used at four levels (0.0, 0.25, 0.50, and 1.0 mg L−1) in combination with 0.0, 0.25, and 0.50 mg L−1 naphthaleneacetic acid (NAA) in full and half-strength MS media. Maximum shoot multiplication for Gisela 12 (6.2 shoots/explants) and Maxma 14 (4.4 shoots/explants) were observed on MS medium reinforced with 2.0 mg L−1 BAP with 0.25 mg L−1 IBA. The best rooting response of Gisela 12 (100%) and Maxma 14 (88.88%) was also achieved on half-strength MS including 1.0 mg L−1 IBA plus 0.25 NAA and 0.5 IBA plus 0.25 NAA, respectively. The ISSR banding profle showed the genetic stability of propagated plants along with the mother plant. This is the frst study evaluating the use of molecular markers for genetic uniformity test, which can be applied for large-scale propagation.
Efficient Synthesis of Novel 3-Substituted Coumarin-3-carboxamide
Sheikhhosseini, Enayatollah,Balalaie, Saeed,Bigdeli, Mohammad Ali,Habibi, Azizollah,Moghaddam, Hamed Piri Korean Chemical Society 2014 대한화학회지 Vol.58 No.2
A series of novel pseudopeptides contained coumarin skeleton were synthesized through the Ugi-four-component reaction. The 3-substituted coumarin-3-carboxamides were formed through reaction of benzaldehyde derivatives, anilines, coumarin-3-carboxylic acid and isocyanides with high yields and high bond-forming efficiency at room temperature. These novel amidated coumarins exhibit brilliant fluorescence in range of 535-547 nm in chloroform.