Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Titre : Influence of desiccation on seed germination and drought resistance of some crop plants

Auteur : Jani, B M

Université de soutenance : Gujarat University

Grade : Doctor of Philosophy (PhD) 1969

Sommaire partiel
Hordeum vulgare var. N.P. 13, N.P. 18, Presto and Munsing were selected to study this problem. The work was divided into two parts* I. The first part deals with thetffect of different periods of desiccation treatments on enzymes catalase, lipase, amylase as well as carbohydrate, SH and ascorbic acid metabolism during the juvenile’ phase of N.P. 13 and Munsing. The seeds t were germinated and were subjected to desiccation treatment at each stage of germination. The germinating seedlings were desiccated in chambers maintained at zero humidity for five and ten days. Desiccation chambers with this humidity were prepared by keeping concentrated H2SO4 in , desiccators of 8* diameter. Germinating seedlings were kept in these desiccation chambers for the required period of time. These desiccated seedlings were t hen revived by keeping them on moistened sterilized sand in a Petri dish. The t seedlings were considered revived when they reached the next stage of germination to the one at which they were given desiccation treatment. 115- Various metabolic activities were studied in the seedling thus treated at different growth stages. Theestimations were carried out a£ter separating embryo axes and endosperms. The metabolic / activities were determined, (i) before the initiation of the desiccation treatment, i.e. in the undesiccated material (li) at the end of the desiccation period and (ill) after revival. The estimations were carried out up to the 4th stage of germination.

Mots clés : Ascorbic Desiccation Germination Intensity Plants Resistance Seed Sugar

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