Interplant root competition leads to an overcrowding effect in maize

Pattern Competition Leads to Chaos

An Analysis of Heterochromatin in Maize Root Tips

The B chromosomes of maize are condensed in appearance during interphase and are relatively inert genetically; therefore they fulfill the definition of heterochromatin. This heterochromatin was studied in root meristem cells by radioautography following administration of tritiated thymidine and cytidine, and was found to behave in a characteristic way, i.e. it showed asynchronous DNA synthesis ...

Competition between items in working memory leads to forgetting

Switching attention from one thought to the next propels our mental lives forward. However, it is unclear how this thought-juggling affects our ability to remember these thoughts. Here we show that competition between the neural representations of pictures in working memory can impair subsequent recognition of those pictures. We use pattern classifiers to decode functional magnetic resonance im...

Emergency overcrowding: an incurable disease?

situation of the emergency department (ED) [1], highlighting common problems in diff erent countries that have remained unchanged and unresolved for decades [2]. Is there a solution to the collapse of emergency services or is it an incurable disease? Figure 1 shows the fl ows of input and output in an ED – modulating these fl ows can treat the problem. Th e clinician has no doubt that it is pos...

Responses of root growth and distribution of maize to nitrogen application patterns under partial root-zone irrigation

A field experiment was carried out to investigate the effects of varying nitrogen (N) supply andirrigation methods on the root growth and distribution of maize (Zea mays L.) in Wuwei,northwest China in 2011 and 2012. The irrigation treatments included alternate furrow irrigation(AI), fixed furrow irrigation (FI) and conventional furrow irrigation (CI). The N supply treatmentsincluded alternate ...