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Biologia floral em moranga (Cucurbita maxima Duch. var. Exposição)

Authors: Nicodemo, Daniel; Couto, Regina Helena Nogueira; Malheiros, Euclides Braga; Jong, David De;

Biologia floral em moranga (Cucurbita maxima Duch. var. Exposição)

Abstract

Com o objetivo de se estudar a biologia floral em moranga (Cucurbita maxima), variedade Exposição, realizaram-se dois ensaios, utilizando-se 128 plantas, numa área de 2.000 m². A abertura e o murchamento das flores ocorreu, em média, às 6p5 e 13h52, respectivamente. Havia, em média, 2,26 flores masculinas para cada flor feminina. As flores femininas produziram, em média, 138,9% mais néctar que as masculinas. A produção de néctar foi menor no segundo ensaio devido à menor precipitação e menor umidade relativa do ar. A concentração total de açúcares do néctar foi 0,3 e 3,8% maior nas flores femininas em relação às masculinas, respectivamente, para o primeiro e segundo ensaios. As flores masculinas produziram, em média, 129.021 grãos de pólen por flor, com 91,2% viáveis às 9h00. O estigma das flores femininas foi receptivo aos grãos de pólen, em média, até às 13p0. As flores femininas foram mais atrativas que as masculinas.

In order to study pumpkin floral biology (Cucurbita maxima) var. Exposição, were conduced two tests, using 128 plants, in 2,000 m². The opening and the withering of the flowers happened, on average, 6p5 and 13h52, respectively. There were, on average, 2.26 male flowers for each female flower. The female flowers produced, on average 138.9% more nectar than the male ones. The nectar production was smaller in the second test because of a lesser due precipitation and smaller relative humidity of the air. The sugar concentration in the nectar was 0.3 and 3.8% larger in the female flowers in relation to the male ones, respectively for the 1st and 2nd tests. The male flowers produced 129,021 pollen grains for flower, with 91.2% viable at 9h00. The stigma of the female flowers was receptive to the pollen grains, on average, to the 13p0. The female flowers were more attractive than the male ones.

Country
Brazil
Keywords

pólen, atratividade floral, pollen, floral biology, pumpkin, nectar, néctar, floral attractiveness, moranga, biologia floral

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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Green