Independent lines of evidence suggest that members from ancient and polymorphic gene families such as defensins and receptor-like kinases mediate intercellular communication during both the immune response and reproduction. Here, we report a large-scale analysis to investigate the extent of overlap between these processes by comparing differentially expressed genes (DEGs) in the pistil transcri...

1. Ability to self-fertilize is correlated with invasiveness in several introduced floras, and this has been attributed to its mitigating effect on fecundity when pollinator visitation and mate availability are inadequate. Cross-pollination opportunities are expected to be most limited in isolated individuals and small populations, both typical of the leading edge of an invasion. Thus, self-pol...

Background and aims – Interactions of insects with trap flowers Aristolochia manshuriensis, a relic woody liana fragmented natural populations from south-eastern Russia, were studied. Pollination experiments conducted to identify the causes poor fruit set in this plant.Material methods The study was carried out at two ex situ sites within range A. manshuriensis suburban zone city Vladivostok (R...

Abstract Pollinator richness, abundance and visitation frequency may be affected by the of floral resources abiotic factors, influencing plant reproductive success. We analysed whether diversity, butterfly on Lantana camara vary across year in a tropical urban landscape this variation community influences plant’s A two-period survey, referred to here as rainier drier seasons, was carried out 12...

TABLE O F CONTENTS INTRODUCTIO . . . . ............................. 543 Results of pr 545 The inheritance of protein in maize.. . . . . 554 The problem. 554 Variation in the protein content of individual seeds 557 Comparison of the protein content of self-pollinated and of wind-pollinated ears. ..... 562 The immediate effect of pollination on the size and composition of the seed. .......... 56...

In order to prevent self-pollination in some plants like corn, tomato and cabbage, emasculation of the female line by hand is required, raising costs and labor expenses of seed production. The utilization of naturally occurring cytoplasmatic male-sterility (cms) is a more efficient approach. Mostly correlated with changes in the mitochodrial or chloroplast DNA, in some lines of distinct species...

BACKGROUND AND AIMS Bromeliaceae is a species-rich neotropical plant family that uses a variety of pollinators, principally vertebrates. Tillandsia is the most diverse genus, and includes more than one-third of all bromeliad species. Within this genus, the majority of species rely on diurnal pollination by hummingbirds; however, the flowers of some Tillandsia species show some characteristics t...

We studied the pollination biology of Canna paniculata (Cannaceae), a plant species common in the Atlantic Rainforest of southeastern Brazil. The species presents specialized ornithophilous flowers, which in our study area are solely pollinated by the hermit hummingbird Phaethornis eurynome. Although C. paniculata is capable of bearing fruit after self-pollination, it requires pollinators for r...

apricot (prunus armeniaca), palys an important role in fruit production industry in iran. irregular set of fruit, caused by either sterility of flower organs or incompatibility has been the main problem in apricot production over the years. in this study, it has been attempted to determine these phenomena for four apricot cvs. namely ‘shahroodi’, ‘nasiri’, ‘jahangiri’ and ‘noori’ through the me...

EPORTS by investigators in recent years indicate that substantial amounts of allelic polymorphism are often maintained in plant populations that exhibit various levels of outcrossing. The reason for this phenomenon is an important consideration in evolutionary theory, particularly for those organisms that exhibit a high degree of self-pollination (where the mating system would seem to impose a ...