Abstract
In 1998-2000 studies on length and abundance of flowering and on nectar productivity of zucchini and marrow (<i>Cucurbita pepo</i> L.) were carried out in Lublin area. Flowers visitors were also monitored. Flowering of plants lasted from the end of June till the end of September. The mean number of flowers per plant of zucchini reached: 31 (male flowers) and 26 (female flowers), and for marrow 226 and 22, respectively. Flowers lived, on average, for 5 hours. Female flowers of marrow secreted the highest amount of nectar - 1.354 g per 10 flowers, on average. Sugar content in nectar was 21.84%-27.31%. The mean total amount of sugars secreted by 10 flowers of <i>Cucurbita pepo</i> L. was 21.5-304.3 mg. Pollinators were mainly bumblebees and honey bees.
Highlights
Flowering of plants lasted from the end of June till the end of September
Female flowers of marrow secreted the highest amount of nectar – 1.354 g per 10 flowers, on average
The mean total amount of sugars secreted by 10 flowers of Cucurbita pepo L. was 21.5–304.3 mg
Summary
Nectar production and insect visits in Cucurbita pepo L. flowers (Otrzymano: 24.10.05). Summary In 1998–2000 studies on length and abundance of flowering and on nectar productivity of zucchini and marrow (Cucurbita pepo L.) were carried out in Lublin area. The mean number of flowers per plant of zucchini reached: 31 (male flowers) and 26 (female flowers), and for marrow 226 and 22, respectively. Female flowers of marrow secreted the highest amount of nectar – 1.354 g per 10 flowers, on average. The mean total amount of sugars secreted by 10 flowers of Cucurbita pepo L. was 21.5–304.3 mg. Rośliny należące do Cucurbitaceae występują głównie na obszarach tropikalnych i subtropikalnych, rosną również dziko w niewielkiej liczbie gatunków w klimacie umiarkowanym. Celem pracy było zbadanie biologii kwitnienia, porównanie nektarowania i intensywność oblotu przez owady zapylające kwiatów dwóch taksonów z rodziny Cucurbitaceae: cukinii i kabaczka
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