Advancing Endodormancy Release in Temperate Fruit Trees Using Agrochemical Treatments.

Endodormancy in temperate fruit trees like is a protector state that allows the trees to survive in the adverse conditions of autumn and winter. During this process, plants accumulate chill hours. Flower buds require a certain number of chill hours to release from endodormancy, known as chilling requirements.

Gene Expression Analysis of Induced (Sharka) Resistance in Peach () by Almond () Grafting.

No natural sources of resistance to (PPV, sharka disease) have been identified in peach. However, previous studies have demonstrated that grafting a "Garrigues" almond scion onto "GF305" peach rootstock seedlings heavily infected with PPV can progressively reduce disease symptoms and virus accumulation. Furthermore, grafting a "Garrigues" scion onto the "GF305" rootstock has been shown to completely prevent virus infection.

Pedigree analysis of 220 almond genotypes reveals two world mainstream breeding lines based on only three different cultivars.

Loss of genetic variability is an increasing challenge in tree breeding programs due to the repeated use of a reduced number of founder genotypes. However, in almond, little is known about the genetic variability in current breeding stocks, although several cases of inbreeding depression have been reported. To gain insights into the genetic structure in modern breeding programs worldwide, marker-verified pedigree data of 220 almond cultivars and breeding selections were analyzed.

Ascorbic acid and prunasin, two candidate biomarkers for endodormancy release in almond flower buds identified by a nontargeted metabolomic study.

Temperate fruit trees belonging to Prunus species have the ability to suspend (induce dormancy) and resume growth periodically in response to environmental and seasonal conditions. Endodormancy release requires the long-term accumulation of chill. Upon accumulation of cultivar-specific chill requirements, plants enter the state of ecodormancy, which means the ability to grow has been restored, depending on the fulfilment of heat requirements.

Identification of early and late flowering time candidate genes in endodormant and ecodormant almond flower buds.

Flower bud dormancy in temperate fruit tree species, such as almond [Prunus dulcis (Mill.) D.A.