Comparison Of Four Fabrics Commonly Used As Exclusion Bags In Studies Of Pollination And Reproductiv

Background and Aims Fabrics used in pollination bags may exclude pollen carried by biotic vectors

, but have varying degrees of permeability to wind-borne pollen. The permeability of bags to wind-borne pollen may have important consequences in studies of pollination and reproductive biology. The permeability of four fabrics commonly used in the construction of pollination bags was examined.

Methods Deposition of wind-borne pollen on horizontally and vertically oriented microscope slides was assessed on slides enclosed in pollination bags, as well as on control slides.

Key Results It was found that the permeability of fabrics to wind-borne pollen, as measured by deposition on both horizontally and vertically oriented slides, decreased with pore size. However, deposition on horizontal slides was always greater than on vertical slides for a given fabric; this could manifest itself as differential success of pollination of flowers in bagsdependent on flower orientation.

Conclusions Obviously, bags with mesh size smaller than most pollen grains are impermeable to pollen. However, material for such bags is very expensive. In addition, it was also observed that bags with even moderately small pore size, such as pores (approx. 200 m) in twisted fibre cotton muslin, offered highly significant barriers to passage of wind-borne pollen. Such bags are sufficiently effective in most large-sample-size reproductive biology studies.

by: zhangjie

POST COMMENT

The Tourism Exclusivity Associated About Agra Tourism Of India - Top Indian Tourist Places The Tourist Guidebook On Where To Research The First Class Expensive Hotels Minutes Away From San Di Rajasthan Tour Important Places To Visit India Rajasthan Travels - Explore Jaipur Jaisalmer Jodhpur And Udaipur Experts Guidance Concerning Reduction Combined With Comfortable Trips On Airlines For Baltimore Playa Del Carmen Travel With Special Services Australia Famous Tourist Attractions The Britax Travel System Abdominal Etching Using Smartlipo Triplex Rajasthan As Tourism Destinations Most Traveled Cities In The United States Country club MA a holiday destination