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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Reproductive ecology of Terminalia pallida Brandis (Combretaceae), anTI Reproductive ecology of Terminalia pallida Brandis (Combretaceae), an endemic and medicinal tree species of India
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Reproductive ecology of Terminalia pallida Brandis (Combretaceae), anTI Reproductive ecology of Terminalia pallida Brandis (Combretaceae), an endemic and medicinal tree species of India

机译：终端榄仁白兰地（Combretaceae）的生殖生态学，印度特有种和药用树种榄仁白兰地（Combretaceae）的生殖生态学。

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摘要

Terminalia pallida is a semi-evergreen tree species. Leaf fall and flushing events occur during pre-monsoon season; leaf flushing extends into the monsoon season. Flowering occurs during late dry season and early monsoon season. The flowers are bisexual and obligately outcrossed and this is enforced by self-incompatibility. Protogyny is a device to promote outcrossing, but it is weak. However, it is partly substantiated by gradual anther dehiscence over a period of six hours. Individual trees flower for a brief period of three weeks with massive floral display. The flowers offer both nectar and pollen for the foragers; the nectar provides five essential amino acids - threonine, arginine, histidine, lysine and methionine, and also some non-essential amino acids. The plant is entomophilous, and cross-pollination is effected mainly by large bees, wasps and butterflies. The natural fruit set is around 6% as against the 62% realized in manual xenogamous pollinations. Fruits fall to the ground when mature and dry, but wind is also instrumental in shedding fruits. The fallen fruits are dispersed by rain water and the seeds germinate and establish seedlings depending on the soil status. The study suggests that T. pallida does not suffer from pollinator limitation to maximize fruit set but from the limitation of compatible pollen, flower and fruit predation by a beetle, fruit predation by a rodent and fruit fungal infestation. Nutrient-poor rocky habitat appears to be an important limiting factor for the recruitment and population expansion.
机译：榄仁榄仁是半常绿树种。季风前季节发生落叶和潮红事件。潮红进入季风季节。开花发生在干旱后期和季风早期。花是双性恋的，必须杂交，这是由于自身不相容而引起的。 Protogyny是一种促进异地杂交的工具，但它很弱。但是，在六个小时的时间内花药逐渐开裂，部分证明了这一点。个别树木在短短的三个星期内开花，并散布着大量花香。花为觅食者提供花蜜和花粉。花蜜提供五个必需氨基酸-苏氨酸，精氨酸，组氨酸，赖氨酸和蛋氨酸，以及一些非必需氨基酸。该植物具有食虫性，异花授粉主要受大型蜜蜂，黄蜂和蝴蝶的影响。天然坐果率约为6％，而人工异花授粉的实现率为62％。成熟和干燥时，果实会掉落到地面上，但是风也有助于果实脱落。落下的果实被雨水分散，种子发芽并根据土壤状况发芽。这项研究表明，T。pallida不受传粉媒介的限制以最大化果实结实，但受相容的花粉，甲虫的花朵和果实捕食，啮齿类动物的果实捕食和水果真菌侵害的限制。营养不良的岩石栖息地似乎是招募和人口扩张的重要限制因素。

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