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首页> 外文期刊>Acta Horticulturae >Difference in self-fertilization efficiency among three loquat cultivars.
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Difference in self-fertilization efficiency among three loquat cultivars.

机译：三个lo品种的自体受精效率差异。

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摘要

Loquat (Eriobotrya japonica, Rosaceae) carries the gametophytic self-incompatibility (GSI) fertilization system. In a recent work we found that the commercial loquat cultivars 'Yehuda', 'Akko 1' and 'Avri' share the S6-allele, but differ in the other S-allele. Analysis of the progeny showed that the three cultivars are self-compatible, and PCR analysis suggested that the S6 haplotype is responsible for the breakdown of GSI. Nevertheless, in a mixed cultivar orchard, self-fertilization levels differed between the three cultivars: 95% in 'Yehuda', 84% in 'Akko 1' and 77% in 'Avri'. We suspected that the difference among cultivars was due to the flower properties related to pollination and therefore the following parameters were examined along the flowering season: (a) in vitro pollen viability, (b) in vitro pollen viability at different temperatures, (c) percentage of flowers with viable pollen, and (d) germination levels of pollen in the stigmas. 'Yehuda' scored highest for all parameters tested, and it was therefore concluded that its high level of self-fertilization is due to its superior flower properties. However, the effective self-fertilization of 'Yehuda' did not result in higher seed set.
机译：qua（<，蔷薇科）具有配子体自交不亲和性（GSI）施肥系统。在最近的工作中，我们发现商业lo品种“ Yehuda”，“ Akko 1”和“ Avri”共享 S6 等位基因，但在其他 S -等位基因。对子代的分析表明，这三个品种是自我相容的，PCR分析表明， S6 单倍型是导致GSI分解的原因。然而，在一个混合的果园中，三个品种之间的自我受精水平有所不同：“ Yehuda”为95％，“ Akko 1”为84％，“ Avri”为77％。我们怀疑品种之间的差异是由于与授粉有关的花的特性所致，因此在开花季节检查了以下参数：（a）体外花粉活力，（b）在不同温度下的体外花粉活力，（c）具花粉的花朵的百分比，以及（d）柱头上花粉的发芽水​​平。 'Yehuda'在所有测试参数上得分最高，因此得出的结论是，其高水平的自体受精归因于其优异的开花特性。然而，'Yehuda'的有效自体受精并没有导致更高的结实率。

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