BACKGROUND AND AIMS Hard-seeded (physical) dormancy is common among plants, yet mechanisms for dormancy release are poorly understood, especially in the tropics. The following questions are asked: (a) whether dormancy release in seed banks of the tropical shrub Parkinsonia aculeata (Caesalpiniaceae) is determined by wet heat (incubation under wet, warm to hot, conditions); and (b) whether its e...

Seeds of the plant Eucommia ulmoides Oliver, have prominent dormant characteristics. In present study, seed dormancy and germination E. were investigated by treating them with exogenous GA3 different water temperatures. The results revealed that warm soaking treatments beneficial to breaking seeds. rate seeds treated 50℃ was 84.67%. comparison, 300 mg·L-1 had only a 45%. This low resulted proba...

Seed processing and dormancy break treatments are recommended for rendering seeds restoration-ready. Conversely, fruit structures seed coats may protect from environmental harm in the field. We evaluated effects of (by either keeping or extracting seeds) and/or scarification (of physically dormant on seedling emergence establishment 10 legume tree species tropical forests savannas Central Brazi...

Throughout the southeastern United States, Rhus and Ruhm species are common associates oI the southern pines on a wide array of upland site and stand conditions. Because of their ability to overrun disturbed sites, these species are categorized as competitors to pint during stand regeneration. Since prescribed burning is often used for site preparation in advance of pine regeneration, this stud...

Abstract: Analyses of germination seeds under artificial stress conditions are tools for a better understanding the survival and adaptation capacity species natural conditions. Therefore, aim this study was to evaluate effect priming on seed germination, breaking dormancy, length Urochloa brizantha seedlings water restriction salt A completely randomized experimental design used with four repli...

The recent development of genetically modified sugarcane, with the aim of commercial production, requires an understanding of the potential risks of increased weediness of sugarcane as a result of spread and persistence of volunteer sugarcane. As sugarcane is propagated vegetatively from pieces of stalk and the seed plays no part in the production cycle, the fate of seed in the environment is y...

Phase II of germination represents a key developmental stage of plant growth during which imbibed seeds either enter stage III of germination, completing the germination process via radicle protrusion, or remain dormant. In this study, we analyzed the influence of the peroxisomal ATP-binding cassette transporter COMATOSE (CTS) on the postimbibition seed transcriptome of Arabidopsis (Arabidopsis...

BACKGROUND AND AIMS The formation of zonal communities may be attributed to differences in germination across the community and to timing of germination of seeds present in the seed bank. Our goals were two-fold: (1) to assess the annual germination pattern of Spergularia marina; and (2) to determine whether germination of S. marina differed across zonal communities. METHODS Fresh seeds were ...