The effect of genotype and temperature interaction on pollen performance in the pistils of autochthonous sour cherry cultivar ‘Feketićka’

Radičević, S.; Ognjanov, V.; Maric, S.; Barac, G

doi:10.13080/z-a.2021.108.035

Cited by 3 publications

(2 citation statements)

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“…However, all tested plum cultivars showed a drastic drop in ovule viability at a constant temperature of 20 • C. Previous research suggests that pollen tubes do not enter ovules with intense fluorescence, as they are considered non-viable or senescent [41]. However, in the majority of cases for sour cherry, under the controlled conditions, and in a few cases under field conditions for sweet cherry, when primary ovules were fluorescent, a clear penetration of pollen tubes was observed [16,39]. The lower percentage of fluorescent primary ovules in open pollination compared to cross-pollinated cultivars may be due to the absence of flower emasculation [14,42].…”

Section: Discussionmentioning

confidence: 98%

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The Effect of Different Temperatures on the Viability and Senescence of Plum Ovules (Prunus domestica L.)

Đorđević,

Cerović,

Meland

et al. 2024

Plants

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This paper reports on a study investigating the viability and senescence of plum ovules when exposed to different constant temperatures over two years. The research was conducted on the primary and secondary ovules of four plum cultivars: ‘Mallard’, ‘Edda’, ‘Jubileum’, and ‘Reeves’. The results show that the first indication of ovule viability loss was callose accumulation, which was detected using the fluorescent dye aniline blue. All cultivars had viable ovules, in different percentages, at 8 °C on the twelfth day after anthesis. However, at higher temperatures, distinct patterns emerged, indicating the adaptability of each cultivar at certain temperatures. The first indication of callose accumulation became visible at the chalazal pole. After anthesis, the ovule’s ability to remain viable gradually reduced, followed by callose deposition throughout the ovary. The cultivars ‘Edda’ and ‘Reeves’, from 6 days after anthesis onward, in both years, showed the highest percentage of nonviable ovules. In contrast, the ‘Jubileum’ cultivar demonstrated the highest percentage of viable ovules. The loss of viability of secondary ovules followed a similar pattern to that of the primary ovules in all cultivars. This research provides valuable insights into embryological processes, which can help in the following breeding programs, and to cultivate plum cultivars in Western Norway’s climate conditions.

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Section: Discussionmentioning

confidence: 98%

“…Temperature changes can significantly affect biological processes in fruits, which may result in poor fruit sets. High air temperature has been shown to affect various reproductive aspects, such as stigma receptivity, pollen vitality, pollen tube growth, and ovule longevity [35][36][37][38][39], although many parts are still unknown.…”

Section: Discussionmentioning

confidence: 99%