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首页> 外文期刊>Genetic Resources and Crop Evolution >Floral biology of Grewia flavescens Juss.: an underutilized crop
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Floral biology of Grewia flavescens Juss.: an underutilized crop

机译：Grewia Flavescens Juss的花卉生物学：未充分利用的作物

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摘要

Grewia flavescens is a fruit species found throughout semi-arid and sub-humid parts of the world including India. In contemporary era, emphasis on food supply, market value and medicinal utility of underutilized crops made this fruit species suitable for commercial cultivation. The present study was the first attempt made to study the floral biology of G. flavescens. Anthesis was noticed between 1130 and 1300 h whereas, between 1200 and 1230 h its peak anthesis was observed. Pollen dehiscence occurred 1-2 h prior to anthesis. The maximum pollen viability of 80.34 +/- 5.16 per cent with 1% acetocarmine was observed at the time of anthesis and it was coincided with the stigmatic receptivity. After 2 h of anthesis, receptivity of stigma was found maximum and the peak nectar production was between 0 and 2 h after flower opening. A total of 21 flower visitors were recorded, of which Megachile species was more abundant compared to Apis, Xylocopa species and other minor flower visitors. The absence of insect pollination reduce the fruit set 21% from 82% under open pollination. Delayed selfing was observed as a safety mechanism in this species.
机译：Grewia Flavescens是一家在包括印度在内的世界上半干旱和潜水地区的水果种类。在当代时代，未充分利用的食品供应，市场价值和药用效用，使得这种适合商业培养的水果种类。本研究是第一次尝试研究G. Flavescens的花卉生物学。在1130和1300小时之间被注意到，在1200和1230℃之间观察到在1200和1230℃之间观察到。花粉裂开发生在开花前1-2小时。在开花术时观察到80.34 +/- 5.16％的最大花粉活力，其中具有1％的acetocarmine，并恰好呈耻骨接收性。经过2小时后，在开花开口后，最多发现耻骨的接受性最大，峰值花蜜产量在0到2小时之间。记录了21种花游客，与API，Xylocopa种类和其他小花游客相比，Megachile物种更丰富。没有昆虫授粉的缺失从开放授粉下的82％减少了21％。观察到延迟自行于本物种中的安全机制。

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