Nitrogenase activity in wheat seedlings bearing para-nodules induced by 2,4-dichlorophenoxyacetic acid (2,4-D) and inoculated with Azospirillum.

Effects of daminozide on somatic embryogenesis from immature and mature embryos of wheat

The influence of daminozide, an inhibitor of gibberellins biosynthesis, on the somatic embryogenesis in immature and mature embryo derived from tissue cultures of wheat was investigated. Low concentrations of daminozide (0.064-0.127 mM) positively affected the somatic embryogenic capacity of immature embryos (cv. ‘Andros’) cultured on the medium supplemented with either 2,4-dichlorophenoxyaceti...

The effect of 2,4-D on the photosynthetic apparatus in cotyledons of spruce (Picea abies L. Karst.) seedlings grown in the dark

Growth regulating substance, 2,4-dichlorophenoxyacetic acid (2,4-D) is widely used in plant cell cultures and also in agriculture as a herbicide. The effect of 2,4-D on photo­ synthetic pigment content and chloroplast ultrastructure in spruce seedlings grown in the dark was studied. Seedlings were grown for 16 days in the dark at room temperature in Petri dishes moistened either with tap water ...

Effects of Ethylene and 2,4-Dichlorophenoxyacetic Acid on Cellular Expansion in Pisum sativum.

Ethylene inhibits growth in the subhook region of intact etiolated pea seedlings (Pisum sativum, var. Alaska) by reducing the capacity of the polar auxin transport system supplying auxin to the tissue. Application of 0.1 mm 2,4-dichlorophenoxyacetic acid reverses the growth inhibition caused by ethylene, and stimulates formation of sufficient gas to induce a swelling response in the absence of ...

Enhanced Activity of the Soluble Ribonucleic Acid Polymerase from 2,4-Dichlorophenoxyacetic Acid-treated Maize Seedlings.

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One of the ways of haploid production is a cross between wheat and maize. Recently success has been achieved in this method, leading to the production of zygotes; these zygotes generally undergo elimination of maize chromosomes and thus lead to production of wheat haploid plant. The purpose of this study was to develop an efficient method of haploid production via maize pollination in short dur...