6 documents found, page 1 of 1
Floral biology of a population of Mirabilis jalapa L. (Nyctaginaceae) from Sout...
Leal, Ausileide Alves; Terada, Yoko; Machado, Maria de Fatima Pires da SilvaThe reproductive pattern of a cultivated population of Mirabilis jalapa in the Southern region of Brazil was investigated. Flowers of M. jalapa opened for one night, in the early evening at 17h00 and closed early the next morning from 4h30 to 6h00. Anther dehiscence occurred from about 19h30 to 20h30. The presence of pollen grains on the stigma surface was recorded in flowers in which the anther lay at the same...
Floral biology of Croton urucurana Baill (Euphorbiaceae) that occurs in riparia...
Yamamoto Pires, Marilene Mieko; Souza, Luiz Antonio de; Terada, YokoStudies of floral biology were developed on Croton urucurana, a pioneer monoecious tree, recommended to be used in the process of regeneration of the riparian forest. The plant presents small yellow-greenish unisexual flowers, disposed in racemose inflorescences. Anthesis occurs at night, flowers last three days and open around 11 pm. Flowers are visited by insects belonging to the following Orders Diptera, Odo...
Concentração de açúcares no néctar e visitantes florais do siratro (Macroptiliu...
Toledo, Vagner de Alencar Arnaut de; Oliveira, Arildo José Braz de; Ruvolo-Takasusuki, Maria Claudia Colla; Mitsui, Marina Hitumi; Vieira, Renata EuniceSiratro (Macroptilium atropurpureum Urb.) é uma planta forrageira com alto valor nutricional e excelente palatabilidade, sua fenologia é pouco conhecida. Objetivando melhorar o conhecimento e compreensão dos polinizadores do siratro e sua biologia floral, o conteúdo de açúcares totais no néctar de suas flores e a identificação desses açúcares foram determinados por espectrofotometria e cromatografia, respectiva...
Floral biology of four Ipomoea (Tubiflorae: Convolvulaceae) species - DOI: 10.4...
Terada, Yoko; Taniguchi, Ana Paula; Takasusuki, Maria Claudia Colla Ruvolo; Toledo, Vagner de Alencar Arnaut deThis research was carried out to evaluate the floral biology of Ipomoea acuminata, I. batata, I. cairica and I. quamoclit in Maringá, state of Paraná. Anthesis period, stigma receptivity, viability of the pollen grains and medium height of the style and filament were analyzed during the blossom period of Ipomoea. Both I. quamoclit and I. potato had their flowers opening at 6:00 a.m. and their closing at 2:00 p....
Seed production and germination of sunflower (Helianthus annuus L.) in three po...
Paiva, Guilherme José de; Terada, Yoko; Toledo, Vagner de Alencar Arnaut deThis study was carried out to evaluate seed production and germination of sunflower, Helianthus annuus. The sunflower cultivar used is called Embrapa 122-V2000. The experiment used a marked area that had 8m x 3m, and in a second area was installed, containing a honeybee colony and covered with wire screen, 8m x 3m, with two meters in the highest part. The seed production was 362.34% higher in the covered area w...
Behavior of Apis mellifera L. Africanized honeybees in sunflower (Helianthus an...
Paiva, Guilherme José de; Terada, Yoko; Toledo, Vagner de Alencar Arnaut deThis research was carried out to evaluate the behavior of africanized honeybees, Apis mellifera L. (Hymenoptera, Apidae) and the development of a colony inside a covered area of sunflower, Helianthus annuus L. (Asteraceae) crop. It was used an area marked with 8 m x 3 m, and a second area in which a honeybee colony was installed inside a covered area with wire screen of 8m x 3m, two meters high in the highest p...