Influence of Raspberry bushy dwarf virus on pollination of red raspberry (Rubus idaeus L.) cultivars
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Kuupäev
2020
Kättesaadav alates
Autorid
Sproģe, L.
Strautiņa, S.
Ajakirja pealkiri
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Kirjastaja
Abstrakt
Raspberry bushy dwarf virus (RBDV) is one of the major pollen-borne pathogens of
the genus Rubus that causes drastic reduction of yield and degradation of berry quality. The aim
of the study was to evaluate the quality of raspberry pollen and the effect of RBDV on pollination
process. The research was carried out at the Institute of Horticulture. Within two years, 2017 and
2018, the pollen viability and pollen germination capacity of nine raspberry cultivars were
analysed. The cross-pollination was done and the pollination quality of 31 crossing combinations
was evaluated. The study found that although the pollen viability of cultivars infected with RBDV
was higher than that of uninfected cultivars, there were no statistically significant differences.
The viral contamination of the mother plant played a more important role in the pollination
process. Pollination was better on uninfected mother plants and pollen germinated was faster than
on infected plants. However, when the virus-infected cultivars were pollinated with infected
pollen, the virus had an effect on the growth rate of pollen tubes, that decreased and the pollen
tubes did not reach the ovary.
Kirjeldus
Märksõnad
pollen germination, pollen viability, hybridization, fluorescence microscopy, articles