annals-of-botany
Chromosome paring in Paphiopedilum hybrids
Interspecific hybridization of lady’s slipper orchids (Paphiopedilum) has long been used for breeding programs; however, genome affinities among species are almost unknown. Lee et al.
annals-of-botany
Height growth regulation in a crowded stand
Although being tall is advantageous in light competition, plant height growth is often similar among dominant plants in crowded stands. Nagashima and Hikosaka manipulate plant height
annals-of-botany
Protein gradients in wheat endosperm
The starchy endosperm of wheat, Triticum aestivum, has three major components: protein, starch and cell wall polysaccharides, which are are not homogenously distributed across the tissue.
annals-of-botany
Origin of triploid Arachis by autopolyploidy
Origin of triploid <i>Arachis</i> by autopolyploidy The origins of the economically important tetraploids in Arachis (including peanut) have largely been
annals-of-botany
Evolution, classification and biogeography of Velloziaceae
There is considerable discord among treatments of the Velloziaceae despite the large amount of data that exists for this family. Mello-Silva et al. undertake analyses
annals-of-botany
Xylem structure and passive bacterial spread
The bacterium Xylella fastidiosa, responsible for Pierce’s disease of grapevine, colonizes the xylem conduits of vines. Chatelet et al. examine the xylem structure of several
annals-of-botany
Polyploid speciation in Asplenium
Polyploidy is a major evolutionary force generating new plant species. Hunt et al. explore the dynamics of allopolyploid speciation in the western Mediterranean rock fern Asplenium
annals-of-botany
Function and evolution of sterile sex organs
Why are sterile anthers and carpels retained in some flowering plants, given their likely costs? Yu et al. study a cryptically dioecious species, Petasites tricholobus, in
annals-of-botany
Gender segregation and sex allocation in pine
Many sex-ratio-related studies have focused on dioecious or monoecious herbaceous plants, but relatively few have looked at trees. Ne’eman et al. examine changes
annals-of-botany
Physical dormancy and the water gap in Geranium
Physical dormancy and the water gap in <i>Geranium</i> A water gap is a small opening that forms on breaking of
annals-of-botany
Estimating below-ground biomass in forest plantations
Despite its importance in a wide variety of studies, accurate estimation of below-ground biomass and its distribution in the soil is notoriously difficult. Levillain et
annals-of-botany
QTL analysis of heterostyly in Primula
Heterostyly and self-incompatibility are usually controlled by the S locus complex, but the usually distylous Primula siebolodii shows continuous variation of anther and stigma position