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首页> 外文期刊>Pakistan journal of botany >Reproductive and pollination biology of Sorbus alnifolia, an ornamental species
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Reproductive and pollination biology of Sorbus alnifolia, an ornamental species

机译：Sorbus Alnifolia的生殖和授粉生物学，观赏物种

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Sorbus alnifolia (Rosaceae) is grown as an ornamental and as a fruit tree, but has low fruit set rate. Wood from S. alnifolia is used in making equipment, vehicles, and models. Knowledge of its pollination biology may prove useful in solving the problem of low fruit set, but is still lacking. The present study investigated the pollination biology of Sorbus alnifolia in temperate montane forests of eastern China, including aspects of morphology, floral biology, the reproductive system, flower-visitor observations, and an analysis of the pollen ovule ratio. The ?owers are sequentially hermaphrodite and protogynous. Pollen and stigmas have a dynamic overlapping period of fertility of at least 3 d. Flowers of this species can set fruit via natural pollination (23.5%), artificial self-pollination (8.63%), and artificial cross-pollination (27.41%) and apomixis has not been observed (0%). The main pollinators were insects of the families Nymphalidae, Apidae and Tenthredinidae. Although S. alnifolia is adapted to insect pollination, it readily sets fruit via autogamy when no insect visits occur; this can be supported by artificial self-pollination as an adaptive strategy for reproduction under unfavorable environmental conditions. In rainy days, both pollen viability and insect activity decreased significantly. Hand pollination is recommended and could significantly increase fruit set thereby solving the problem of low fruit set in S. alnifolia . The information gained from this study should provide a useful reference for implementing long-term conservation and management strategies for this species.
机译：Sorbus Alnifolia（Rosaceae）被成长为装饰，果树，但水果套装率低。来自S. Alnifolia的木材用于制造设备，车辆和模型。知识授粉生物学可能证明在解决低水果套装的问题，但仍然缺乏。本研究调查了中国东部温带山梨糖果森林粉授粉生物学，包括形态学，花卉生物学，生殖系统，花盆观测的方面，以及花粉胚珠比的分析。 ？owers是序贯的雌雄同体和疯狂的。花粉和柱头具有至少3天的动态重叠期的生育率。该物种的花朵可以通过天然授粉（23.5％），人工自授粉（8.63％）和人工交叉授粉（27.41％）和apomixis尚未观察到水果（0％）。主要的粉碎剂是Nymphalidae，Apidae和Tenthredinidae家族的昆虫。虽然S. Alnifolia适应昆虫授粉，但是当没有发生昆虫访问时，它可以通过自动扫描速度设置果实;这可以通过人工自我授粉来支持，作为在不利环境条件下繁殖的自适应策略。在雨天，花粉活力和昆虫活动都显着下降。建议使用手授粉，可以显着增加水果集，从而解决了S. Alnifolia的低水果套装问题。本研究中获得的信息应为实施此类的长期保护和管理策略提供有用的参考。

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