53 research outputs found

    Synthesis and spectral studies of ternary complexes of Ni(II) and dioxouranium(VI) with 2-hydroxy-l-naphthaldehyde and some amino acids

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    1011-1013The 1:1:1 ternary complexes of Ni(II)and dioxouranium( VI) with 2-hydroxy-1-naphthaldehyde (A) and some amino acids have been synthesized and characterized. The IR spectral data of the complexes indicate that histidine, aspartic acid and glutamic acid act as tridentate ligands while glycine, ɑ-alanine, β-alanine, valine, leucine, phenylalanine, serine and threonine act as bidentate ligands coordinating through amino nitrogen and carboxylic oxygen. The electronic spectra of the nickel(II) complexes suggest that they are octahedral. An eight coordination has been proposed for uranyl complexes also

    Heterosis and heterobeltiosis in bell pepper (Capsicum annuum var. grossum) for growth and yield parameters

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    The magnitude of heterosis over commercial check and better parent was estimated to identify best crosses for growth and yield traits in bell pepper. Experimental material included 21 F1 hybrids developed by crossing seven diverse parents in half diallel mating design. The findings revealed that Arka Mohini X CW308 showed best heterotic cross combinations, recorded significantly higher heterosis and high per se value over commercial check with respect to number of primary branches, number of secondary branches, plant height, days to 50% flowering, days to first harvest, fruit length, fruit width, number of lobes per fruit, number of fruits per plant and average fruit weight. The cross Arka Mohini X CW308 also showed high heterobeltiosis for traits like fruit length, number of fruits per plant, average fruit weight and average yield per plant. Hence, this hybrid with high per se value and heterosis can be utilized to obtain desirable segregates for development of superior genotype for improvement of horticultural traits in bell pepper

    ZrOCl<sub>2</sub>.8H<sub>2</sub>O as a new solid phase and recyclable catalyst for an efficient Knoevenagel condensation under solvent- free microwave irradiation conditions

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    1301-1303A new solid phase and recyclable catalyst for an efficient Knoevenagel condensation under solvent-free microwave irradia­tion conditions has been developed for universal applications in C-C bond formation

    Cu-exchanged phosphotungestic acid: an efficient and reusable heteropoly acid for the cyclopropanation of alkenes via C-H insertion

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    Alkenes undergo smooth cyclopropanation with ethyl diazoacetate using a catalytic amount of Cu-exchanged phosphotungestic acid (Cu-TPA) in dichloromethane under mild reaction conditions to afford cyclopropanecarboxylates in high yields with moderate selectivity. The catalyst is recycled and reused for three to four subsequent runs with a minimal decrease of activity

    Exploitation of Hybrid Vigour and Combining Ability Studies for Yield and Its Attributing Traits in Ridge Gourd [Luffa acutangula (Roxb.) L.]

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    Twelve parental lines (7 lines and 5 testers) were crossed in Line × Tester mating design and 35 F1 hybrids of ridge gourd obtained and were studied to investigate the extent of heterosis and combining ability for yield and related traits. Result revealed that the crosses, COHB-1 × Deepthi (25.95 %), COHB-33 × Deepthi (11.07 %) and COHB-32 × Pusa Nutan (5.09 %) exhibited maximum and significant positive heterosis over the commercial check (Naga) for fruit yield per vine. Among the parents, maximum and significant gca effects was recorded in the line COHB-33 (0.66) followed by Pusa Nutan (0.60) and Deepthi (0.44) for fruit yield per vine. The maximum sca effects was observed in the cross COHB-1 × Deepthi (1.64) followed by COHB-32 × Arka Sumeet (1.12) and COHB-32 × Pusa Nutan (1.03)
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