Detail of "4338-47-0"

Reference

Germinative response of two wheat cultivars to salinity after pretreatment by some hormones, caffeine, and proline

Germinative response of two wheat cultivars to salinity after pretreatment by some hormones, caffeine, and proline. Al-Ackhal, I. E. M.; Al-Whaibi, M. H. (Coll. Sci., King Saud Univ., Riyadh, Saudi Arabia). J. Coll. Sci., King Saud Univ., 15(2), 321-33 (English) 1984. CODEN: JCSUDU. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Wheat grains (Triticum vulgare, cultivars Samma and Legaimi) were tested for the effect of pretreatment by 10-6M 6-furfurylaminopurine riboside [4338-47-0], gibberellin A3 [77-06-5], indole-3-butyric acid [133-32-4], 2,4-D [94-75-7] or by 8 ′ 10-6M HCl, 1.04 ′ 10-4M abscisic acid [21293-29-8] on the tolerance of these grains to different concns. of NaCl added to the basic media. The concns. of NaCl were 0, 50, 100, 200, 300, 400, 500, or 600 mequiv/L. The test was for the germinatory response, i.e., highest root and shoot length in the dark at 18°/30°. Progressive inhibition of these parameters occurred as NaCl concns. were increased, but 2,4-D pretreatment gave the best tolerance, as judged by the 50% inhibition value, where the grains were able to tolerate <350 mequiv/L for Samma and 420 mequiv/L for Legaimi. Next to 2,4-D , cytokinin was the most effective, whereas the other chems. had either no effect or were inhibitory. The results also indicate some cultivar variations. Implications of these results are discussed.

High performance liquid chromatography of cytokinins

High performance liquid chromatography of cytokinins. Ernstsen, Arild; Jensen, Einar (Inst. Biol. Geol., Univ. Tromso, Tromsoe N-9001, Norway). J. Liq. Chromatogr., 8(2), 369-79 (English) 1985. CODEN: JLCHD8. ISSN: 0148-3919. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) HPLC (normal and reversed-phase) was used for sepn. and purifn. of cytokinins, i.e., adenine [73-24-5], adenine riboside [58-61-7], trans-zeatin [1637-39-4], cis-zeatin [32771-64-5], trans-zeatin riboside [6025-53-2], cis-zeatin riboside [15896-46-5], dihydrozeatin [23599-75-9], kinetin [525-79-1], kinetin riboside [4338-47-0], benzyladenine [1214-39-7], benzyladenine riboside [4294-16-0], 2iP [2365-40-4], and 2iP riboside [7724-76-7]. In reversed-phase HPLC, deactivated Supelcosil LC-18-DB was used with solvent systems contg. MeOH or MeCN and H2O (pH 7 or 35). The cytokinins eluted more rapidly with pH 7 MeCN-based solvents than with methanolic solvents. Also, when a rapid sepn. of riboside/free base is required, the pH 3.5 MeCN-based solvents should be used. Normal-phase HPLC was carried out on Lichrosorb 10 NH2 using EtOH and hexane as solvents in 10 mM NH4OAc or AcOH. The normal phase HPLC is a tool for partly sepg. riboside as a group, from free bases, and also for sepg. a riboside from its corresponding free base.