Equipment to assess vigor in soybean seeds using CO2 produced during respiration

Testing Tree Seeds for Vigor: A Review

Th is review exam ines th e use of vigor tests for tree s e eds . It suggests th at precise evaluations of th e s e tests and th e ir application w ith s eeds of w oody plants is not yet possib le . Th is is due to th e w ide genetic variation, prim arily m anifested in variab le m aturity and dorm ancy, th at exists in m ost tree s e ed lots. Sensitive m easurem ents of germ ination rate durin...

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...

Cotton bracts are adapted to a microenvironment of concentrated CO2 produced by rapid fruit respiration.

BACKGROUND AND AIMS Elucidation of the mechanisms by which plants adapt to elevated CO2 is needed; however, most studies of the mechanisms investigated the response of plants adapted to current atmospheric CO2. The rapid respiration rate of cotton (Gossypium hirsutum) fruits (bolls) produces a concentrated CO2 microenvironment around the bolls and bracts. It has been observed that the intercell...

Effect of soaking time on imbibition,weight loss and respiration rates of soybean,corn and barley seeds

Absence of Lipid Oxidation during Accelerated Aging of Soybean Seeds.

When seeds of soybean were subjected to accelerated aging, the amount of total lipid which was extracted from the whole seed increased with "age," whereas the extractable phospholipid decreased slightly. This small decline primarily reflected changes in the amounts of phosphatidylcholine and phosphatidylethanolamine. The levels of unsaturated fatty acids in the whole seed and in the seed axis s...