Pollinators and pollination effects on three canola ( <ce:italic>Brassica napus</ce:italic> L.) cultivars: A case study in Upper Egypt

Abdulraouf Mohamed Amro

摘要

This research aimed to survey the insect pollinators and visitors of canola, to assay their foraging activities and to study their effects on three canola cultivars (Pactol, Serw-4 and Serw-6) at the Experimental Field Station in Assiut region, Upper Egypt during two flowering seasons 2017/18 and 2018/19. The results manifested that there were nine species of insect pollinators and visitors belonging to four orders and eight families. The majority of the pollinators were Hymenoptera (83%), especially honey bees (Apis melliferaL.), Diptera (12%), Butterflies (Lepidoptera; 3%) and the beetles (Coleoptera; 2%). The peak activity of honey bees was recorded between 9 am and 11 am while for the other insect pollinators, except, syrphid flies was 11 am. The caged cultivars (without insect pollination) had statistically significant lower yield parameters (silique number per plant, seed number per silique, weight of 1000 seeds, oil content and seed germination) than the uncaged cultivars (accessible to insect pollinators and visitors). Uncaged plants of canola Pactol and Serw-4 cultivars had high seed oil content (44.34, 51.40%), seed yield (681.8, 429.0?kg/ha.) and seed germination percentage (80, 86%), respectively. Serw-4 cultivar had the first rank in the weight of siliques and seeds. This study indicated that the yield of the canola crop was positively influenced by insect pollinators. Serw-4 is a promising cultivar for large-scale production of edible oil.

机译：这项研究旨在调查油菜昆虫粉粉和游客，分析他们的觅食活动，并研究其对西埃·埃及的实验领域的三种水煮品种（PACOL，SERW-4和SERW-6）的影响2017/18和2018/19的两个开花季节。结果表明，有九种昆虫镇传动人员和属于四个订单和八个家庭的游客。大多数粉碎机是Hymenoptera（83％），尤其是蜂蜜蜜蜂（Apis melliferal。），Diptera（12％），蝴蝶（鳞翅目; 3％）和甲虫（鞘翅目; 2％）。蜂蜜蜜蜂的峰值活性被记录在上午9点至11点之间，而其他昆虫粉化素，除了锡斑苍蝇是11点。笼养的品种（无昆虫授粉）具有统计学显着的低产参数（每株植物的Silique数，每种植物的种子数，1000种种子，油含量和种子萌发）比未涂布的品种（可供昆虫传染媒介和访客访问）。未涂布的油菜乳菌和SLW-4品种植物具有高种子油含量（44.34,51.40％），种子产率（681.8,429.0？kg / ha。）和种子萌发百分比（80,86％）。 SERW-4品种具有三件和种子的重量的第一等级。本研究表明，油菜作物的产量受到昆虫粉化素的积极影响。 SERW-4是一种有希望的品种，用于大规模生产食用油。

Pollinators and pollination effects on three canola ( Brassica napus L.) cultivars: A case study in Upper Egypt

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