Drought, salinization and heavy metal pollution of soils are main stress factors with an increasing impact on the deterioration soil quality, yield crop quality. Seed priming shows good results in improving seed germination, seedling growth plant development. Proline (Pro) metyl jasmonate (MeJA) show stimulating activity help plants overcome stress. The study investigated effect Pro, MeJA hydro...

Differences in seed storage tolerance between soybean cultivars have been frequently observed. Thus, identifying compounds found them that may be related to these differences is necessary support the selection of with seeds better potential. Therefore, this study aimed evaluate changes viability and vigor during two environments, relating antioxidant activity, production reactive oxygen species...

We consider two of the most fundamental theorems in Cryptography. The first, due to H̊astad, Impagliazzo, Levin and Luby (STOC ’89, STOC ’90, SIAM J. on Computing ’99), is that pseudorandom generators can be constructed from any one-way function. The second, due to Yao (FOCS ’82), states that the existence of weak one-way functions (i.e. functions on which every efficient algorithm fails to inve...

Ripening and senescence are the ultimate phases in the developmental events of fruits that result in the expression of the quality characteristics inherent to the fruit. Although it is difficult to demarcate a dividing point between ripening and senescence, the former can be designated as the quality-developing phase, whereas the latter predominantly involves the loss of quality. Degradation of...

Background: Seed deterioration is an unavoidable process during seed storage resulting in declined germination and vigour of the seeds have different potential under condition. Maintenance requires new alternative method conditions viz., packaging material temperature conditions. Storage groundnut cv. VRI 8 changes associated with stored were investigated this study. Methods: The efficiency mod...

Seed deterioration is expressed as the loss of viability, vigour and quality during ageing. The major causes seed refer to free radical-mediated lipid peroxidation, enzyme inactivation or protein degradation, disruption cellular membranes damage genetic integrity. Accelerated ageing (AA) a simple method for studying mechanisms over short periods. In order estimate rate, seeds four maize genotyp...

Castor is an important oilseed crop with great utilitarian value in industrial, pharmaceutical and agricultural sectors, the major constituents of seeds are lipids, carbohydrates, proteins and, course, nucleic acids. Seed deterioration associated various cellular, metabolic chemical alterations to seed constituents. The objective this study was determine effects induced ageing on nutrient conte...

We evaluated hypotheses of senescence in old trees by comparing putative biomarkers of aging in Great Basin bristlecone pine (Pinus longaeva) ranging in age from 23 to 4713 years. To test a hypothesis that water and nutrient conduction is impaired in old trees we examined cambial products in the xylem and phloem. We found no statistically significant age-related changes in tracheid diameter, or...