almonds belong to prunus genus, which is related to rosaceae family. it has close relatives with different species of stoned fruits. one of the main reasons for the long period of seed germination in prunus is compound dormancy, such as the external seed cover as physical dormancy and embryo dormancy causes physiological dormancy. seed stratification and treatments with various hormones are use...

Seed dormancy is defined as the failure of a viable seed to germinate under favorable conditions. Besides playing an adaptive role in nature by optimizing germination to the most suitable time, a tight control of dormancy is important in crop plants. Extensive genetic and physiological studies have identified the involvement of several factors, but the molecular mechanisms underlying this proce...

Kent J. Bradford Department of Vegetable Crops, One Shields Avenue, University of California, Davis, CA 956168631, U.S.A. E-mail: [email protected] Knowledge and prediction of seasonal weed seedling emergence patterns is useful in weed management programs. Seed dormancy is a major factor influencing the timing of seedling emergence, and once dormancy is broken, environmental conditions det...

Understanding germination requirements of native species is an important component of restoration in south Puget Lowland prairies (Washington, USA). We conducted an experiment to determine the effects of pre-germination treatment and germination temperature conditions on the proportional germination of three species of Lupinus. For one species, Lupinus lepidus, germination was highest following...

Seed dormancy is a complex adaptive trait that controls the timing of seed germination, one of the major fitness components in many plant species. Despite being highly heritable, seed dormancy is extremely plastic and influenced by a wide range of environmental cues. Here, using a set of 92 Arabidopsis thaliana lines from Sweden, we investigate the effect of seed maturation temperature on dorma...

a study was conducted to determine the optimum concentration of benzyladenie (ba) and gibberllic acid (ga3) to break the dormancy of gladiolus corms in relation to storage period and to find out the effect of ba and ga3 on growth and development of gladiolus corm and cormels. the effect of ga3 on dormancy breaking was most pronounced in the 100 ppm treatment being 26.93 days while in the water ...

In an ecological context, knowledge of intra-species variation in dormancy and germination is necessary both for practical and theoretical reasons. We used four or five seed batches (replicates) of four closely related annuals co-occurring in arable fields in Sweden: Lamium amplexicaule, L. confertum, L. hybridum and L. purpureum. Seeds used for experiments stemmed from plants cultivated on two...

Treatments that promote dormancy release are often correlated with changes in seed hormone content and/or sensitivity. To understand the molecular mechanisms underlying the role of after-ripening (seed dry storage) in triggering hormone related changes and dormancy decay in wheat (Triticum aestivum), temporal expression patterns of genes related to abscisic acid (ABA), gibberellin (GA), jasmona...