NIAB has announced that Professor Xiangming Xu has become Director of Research. Formerly Head of Science at NIAB’s horticultural centre at East Malling in Kent, Professor Xu is now responsible for developing and delivering the strategy for research …
According to Dutch research ( Visser and Verhaegh, 1980 ), the application of compatible pollen twice with a one to two day interval between applications, could stimulate the activity of the pollen applied on the second occasion. This was thought to be …
Most diploid apple varieties are cross compatible (i.e. self-incompatible). This means that they will not set fruit with their own pollen in most environmental conditions. They require the viable pollen of another variety to be transferred to their …
For effective transfer of viable pollen its growth and the fertilisation of the ovule, it is essential that, where cross-pollination is required, the two varieties flower at approximately the same period. At the very least there needs to be an overlap of …
Most commercial varieties of apple are self-sterile and require pollen from another variety in order to ensure adequate fruit set. Self-fertile clones of Cox are available and a few other varieties show a level of self-fertility, if given favourable …
It is essential that the pollen grains moved by insect vectors, wind or artificially by man, between the pollen donor (pollinating variety) and the main commercial variety, remain viable and capable of germination and growth down the style into the ovary …
Pollinating varieties for use in orchards of self-sterile varieties of apple must produce adequate quantities of viable pollen . The quantities produced are influenced by: Scion varieties and their production of viable pollen. Rootstock influence on the …
In the 1960s and 1970s, research at Long Ashton Research Station showed that several varieties of ornamental ‘crab apples’ performed well as pollinators for commercial varieties of apple such as Cox and its clones ( Williams, 1977 ). Malus aldenhamensis, …
It is essential to plant sufficient numbers of trees of a pollinating variety within an orchard, to provide adequate quantities of viable pollen. There is no single ideal ratio of pollinating to main variety trees and no strong scientific evidence on …
If pollinating varieties, either standard fruit varieties or ornamental Malus , are to flower consistently, abundantly and produce good pollen, it is essential that they are well-managed within the main orchard. Unfortunately, their management is often …
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