Cooler Is Better: The Role of Temperature in the Reproductive Biology of Persian Walnut (Juglans regia L.) Studied in a Hungarian-Bred Cultivar

IF 1.2 4区 农林科学 Q3 HORTICULTURE
Milica Fotirić Akšić, Sezai Ercisli, Mekjell Meland, Géza Bujdosó
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Abstract

The aim was to determine the growth of pollen tubes throughout the transmitting tissue and the process of fertilization in open, optimal and over pollination on the 3rd, 6th and 9th day after pollination of pistillate flowers, together with apomixis. The experiment was carried out over 2 years in Lovasberény, Fejér district, Hungary, which differed in temperature conditions. The average number of pollen tubes in the locule of the ovary was significantly higher in 2017 (1.3%) than in 2019 (1%). A higher percentage of fruit set was recorded in 2017 compared to 2019. The percentage of apomictic fruits from variant of unpollination was higher in 2017 (10%) than in 2019 (3.7%). Based on these results it can be concluded that pollen tube growth and post-fertilization processes together with apomixis of cultivar ‘AK’ are better adaptable to lower temperatures. These findings may help us to move walnut production to the north or to higher altitudes, where the climate is more continental.

Abstract Image

越凉越好:在匈牙利培育的一个品种中研究温度在波斯核桃(Juglans regia L.)繁殖生物学中的作用
目的是测定花粉管在整个传粉组织中的生长情况,以及雌花授粉后第 3、第 6 和第 9 天开放授粉、最佳授粉和过度授粉时的受精过程,同时测定无花果异株授粉。实验在匈牙利费耶尔地区的洛瓦斯贝雷尼进行,历时两年,温度条件各不相同。子房室内花粉管的平均数量在 2017 年(1.3%)明显高于 2019 年(1%)。与 2019 年相比,2017 年的坐果率更高。未授粉变异的无花果比例在 2017 年(10%)高于 2019 年(3.7%)。基于这些结果,可以得出结论:花粉管生长和受精后过程以及 "AK "栽培品种的无花果异交对低温的适应性更强。这些发现可能有助于我们将核桃生产转移到北部或海拔更高的地区,那里的气候更加大陆化。
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来源期刊
Erwerbs-Obstbau
Erwerbs-Obstbau 农林科学-园艺
CiteScore
1.70
自引率
15.40%
发文量
152
审稿时长
>12 weeks
期刊介绍: Erwerbs-Obstbau ist als internationales Fachorgan die führende Zeitschrift für Wissenschaftler, Berater und Praktiker im Erwerbsobstbau. Neben den wirtschaftlich führenden Obstarten widmet sich die Zeitschrift auch den Wildobstarten bzw. neuen Obstarten und deren zukünftige Bedeutung für die Ernährung des Menschen. Originalarbeiten mit zahlreichen Abbildungen, Übersichten und Tabellen stellen anwendungsbezogen den neuesten Kenntnisstand dar und schlagen eine Brücke zwischen Wissenschaft und Praxis. Die nach einem Begutachtungsprozeß zur Publikation angenommenen Originalarbeiten erscheinen in deutscher und englischer Sprache mit deutschem und englischem Titel. Review-Artikel, Buchbesprechungen und aktuelle Fachinformationen runden das Angebot ab.
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