Viability and germinability in long term storage of Corylus avellana pollen

Artificial pollination on hazelnut in South Africa: preliminary data and perspectives

“…Results indicate that artificial pollination is a promising approach in increasing the final hazelnut yield, when the species is cultivated outside its native range, and it has to face difficult environmental conditions, as low relative humidity, high solar radiation, high daily temperature and strong and dry winds during the flowering period. This result agrees with those found by Pinillos and Cuevas (2008) and support the fact that supplemental pollination techniques are useful when adverse environmental conditions affect pollen quantity and quality.…”

“…pollen quality) and the application method are equally important (Pinillos and Cuevas, 2008). In this study, we could further ascertain that pollen of cultivated hazelnuts is strongly affected by male sterility, a phenomenon already highlighted by other authors (Novara et al, 2017;Potenza et al, 1994). Considering all the tests, the percentage of sterile pollen in Barcelona, TGL, and Giffoni is around 50% or more.…”

“…The low atmospheric and soil moisture are detrimental for a proper development of both catkins and female flowers. Mimicking the natural process, artificial pollination proved to be a reliable procedure to increase fruit yield and to fill possible pollination shortages in adverse conditions (Pinillos and Cuevas, 2008). In this study, a new procedure for pollen application on hazelnut in South Africa was developed and the associated biological factors were carefully controlled.…”

Potential Impact of Salt Stress on Male Reproductive Development of Glycine Max (L.) Merr. (Soybean)

“…On the other hand, various stress factors impedes the passage of nutrients from leaves to anthers and this causes the formation of fragmented or infertile pollens [36]. Decrease in pollen viability causes pollination, fertilization, and product yield to decline significantly [37]. For this reason, the existence of a positive relationship between pollen viability and pollen germination can be mentioned.Because pollens can undergo germination only if they are healthy and welldeveloped.…”

Dynamics of flowering of male and female inflorescence and pollen germination of hazel in the conditions of the Banja Luka region

“…The ability of hazel to produce large amounts of pollen facilitates the collection of pollen with a view to applying artificial pollination. Hazel pollen germination in most cultivars is satisfactory and is up to 90% (Novara et al, 2017), but under the influence of meteorological factors it can be very low or completely lacking. Uneven flowering of cultivars and pollinators, along with the aforementioned problems pertaining to pollination and fruit setting often affect the reduction of yield in plantings.…”