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pollination services

    Pear  and  Nashi

Below is an extract from a pollination research paper prepared by the Rural Industries Research and Development Corporation (RIRDC).  To download the document, simply click on the image on the left of this screen.

Most pear and nashi varieties are considered self-infertile and require cross-pollination (DPI.VIC 2008; Sakamoto et al. 2009).  Therefore a transportation agent (i.e. wind, insects) is required to transfer pollen from a pollinising variety to the stigma of a fruit-bearing variety.  The literature does give credit to a number of pollinating insects including several from the orders of hymenoptera, diptera and coleoptera, however it has been well established that honey bees (Apis mellifera) are the primary pollinators of pears and nashis (McGregor 1976; Stern et al. 2004). 

Numerous authors have demonstrated the value of honey bees in pollinating pears, some dating back as far as 1900 have been cited by McGregor (1976) and demonstrate increases in yield and fruit shape/quality of pears when bees are put onto a flowering crop.  Although the same amount of literature is not available for nashis, given that both pears and nashi share very similar planting and growing needs and it is well known that honey bees have been used extensively in the pollination of nashi in Victoria (DAF 2005) and New Zealand (Rohitha and Klinac 1990), the pollination requirements for nashi are considered to be very similar to that of pears.

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