Histochemical Studies on Cotyledon of Soybean during Germination

Leucyl transfer RNA synthetase changes during soybean cotyledon senescence.

Previous work has shown the complement of leucyl transfer RNA (tRNA(Leu)) isoaccepting species present in soybean cotyledons to change during cotyledon senescence. Of the six tRNA(Leu) species resolved by Freon-column chromatography, the capacity of species 1-4 to accept leucine is decreased between 5 and 21 days of age. Parallel changes in tRNA(Leu) synthetase activity are reported here during...

Different Rates of Metabolism of Soybean Proteinase Inhibitors during Germination.

During germination, the content of the major Bowman-Birk proteinase inhibitor (BB-E) in the cotyledons of soybean (Glycine max [L.] Merrill cv. Fiskeby V) seeds decreases, becoming a minor form by the sixth day of germination. One of the three other minor species (BB-D) of this inhibitor in the dry seed increases to become the major form in six-day cotyledons. The other two minor species (BB-C ...

Germination studies on pistacia terebinthus

Distribution of fatty acids during germination of soybean seeds.

Gas chromatographic determination of the fat ty acids in the seeds of soybean (Glycine max) showed mainly linoleic, oleic and palmitic acids with linoleic acid being the major component . Changes in the distribution of fat ty acids were measured during germination in the cotyledons and roots. A decrease in palmitic and oleic acids was observed in the cotyledons from 6 to 12 days, while linoleic...

Precocious Germination during In Vitro Growth of Soybean Seeds.

Immature Glycine max (L.) Merrill seeds were grown and matured in liquid medium at 25 degrees C under fluorescent light. In standard medium containing minerals, 146 millimolar sucrose and 62.5 millimolar glutamine (osmolality 0.24), precocious germination seldom occurred with a starting seed size of less than 300 milligrams fresh weight. Frequency of precocious germination increased with increa...