FLOWERING CYCLES AND FRUIT TYPES OF FICUS SYCOMORUS IN ISRAEL
FLOWERING CYCLES AND FRUIT TYPES OF FICUS SYCOMORUS IN ISRAEL
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DOI：
10.1111/j.1469-8137.1968.tb05497.x
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发表时间：
1968-01-01
期刊：
影响因子：
9.4
通讯作者：
EISIKOWITCH, D
中科院分区：
文献类型：
--
作者：
GALIL, J;EISIKOWITCH, D
摘要：研究了“Balami”品种sycomorus的开花周期与sycophaga sycomoria和apocrypta longitude的关系。在以色列沿海平原，sycomorussyconia ofFicus sycomorussyconia可能遵循以下两种发育过程中的任何一种：大多数syconia在花期早期迅速膨胀，从而产生真正的“营养孤雌”果实；然而，其中一些成为ysvcophaga sycomoria的栖息地，然后遵循完整的发育过程，最终产生“刺激性单性生殖”果实。后一种果实和前一种一样是无籽的，其发育的刺激是由在花子房中的黄蜂产卵和随后在花子房中的黄蜂幼虫的活动提供的。为了查明种子缺失的原因，进行了对照授粉试验。这些实验，以及对全年开花世代序列的系统观察，已经获得了关于种子结实率和sycomore及其黄蜂之间相互关系的信息。
SummaryFlowering cycles in the ‘Balami’ variety ofFicus sycomorus, the sycomore, were studied in connection with the sycophilous waspsSycophaga sycomoriandApocrypta longitarsus. In the coastal plain of Israel the syconia ofFicus sycomorusmay follow either of two developmental courses: most of the syconia swell rapidly, when still at an early stage of anthesis, thus producing genuinely ‘vegetative parthenocarpic’ fruit; some of them, however, become inhabited bySvcophaga sycomoriand then follow a full developmental course, ultimately producing ‘stimulative parthenocarpic’ fruit. The latter type of fruit is seedless, as is the former, and the stimulus for its development is provided by the wasps ovipositing in the flower ovaries and by the subsequent activity of the wasp larvae within. In order to ascertain the reason for the absence of seeds, controlled pollination experiments were conducted. These experiments, and also systematic observations on the sequence of flowering generations throughout the year, have yielded information on seed‐setting and the interrelations between the sycomore and its wasps.