The reproductive phenology of seven species of Rubiaceae from the Brazilian Atlantic rain forest was compared to evaluate the occurrence of phylogenetic constraints on flowering and fruiting phenologies. Since phenological patterns can be affected by phylogenetic constraints, we expected that reproductive phenology would be similar among plants within a family or genus, occurring during the sam...

Species flower production and flowering phenology vary from year to year due to extrinsic factors. Inter-annual variability in flowering patterns may have important consequences for attractiveness to pollinators, and ultimately, plant reproductive output. To understand the consequences of flowering pattern variability, a community approach is necessary because pollinator flower choice is highly...

A late-flowering mutant was isolated from rice T-DNA-tagging lines. T-DNA had been integrated into the K-box region of Oryza sativa MADS50 (OsMADS50), which shares 50.6% amino acid identity with the Arabidopsis MADS-box gene SUPPRESSOR OF OVEREXPRESSION OF CO 1/AGAMOUS-LIKE 20 (SOC1/AGL20). While overexpression of OsMADS50 caused extremely early flowering at the callus stage, OsMADS50 RNAi plan...

Shifting flowering phenology with rising temperatures is occurring worldwide, but the rarity of co-occurring long-term observational and temperature records has hindered the evaluation of phenological responsiveness in many species and across large spatial scales. We used herbarium specimens combined with historic temperature data to examine the impact of climate change on flowering trends in 1...

Climate change is accelerating plant developmental transitions coordinated with the seasons in temperate environments. To understand the importance of these timing advances for a stable life history strategy, we constructed a full life cycle model of Arabidopsis thaliana. Modelling and field data reveal that a cryptic function of flowering time control is to limit seed set of winter annuals to ...

A field experiment was conducted during two successive seasons 2010 and 2011 to determine the influence of rabbit manure rats( 5,10 and 15 m / fed.) and bio-fertilizers. The biofertilizer used was Bacillus sirculans (B.S) (used as seedlings inoculants) and vesicular arbuscular mycorrhizal fungi (VAM) (used as soil inoculants) and their interactions on periwinkle (Catharanthus roseus , L. G. Don...

introduction saffron as a winter active plant with low water requirement is the most strategic medicinal plant in arid and semi-arid parts of iran. this slow-growing plant has narrow leaves and no aerial stem, hence weeds can be overcome it. moreover, because of its root and canopy structure an important part of different resources is not used by this low input crop. therefore, the use of assoc...