Results 221 to 230 of about 4,210 (259)

Induced Autogamy in 2 Species of Stylonychia

The Journal of Protozoology, 1970
SYNOPSIS By using the split‐pair method autogamy was induced in Stylonychia mytilus Ehrenberg and S. muscorum Kahl, and the process was thoroly studied in the former. The pairs split early in conjugation continued the process as autogamonts and never united again altho they were placed in the same depression slide.The pattern of nuclear behavior during
MARÍA A. JAREÑO, PILAR ALONSO, J. PÉREZ‐SILVA   +2 more
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Self-compatibility and autogamy in ‘Guara’ almond

Journal of Horticultural Science, 1992
To evaluate self-compatibility and autogamy in ‘Guara’ almond, pollen tube growth and fruit set following hand pollination and fruit set in a caged tree were considered. Pollen tube growth after self- and cross-pollination was similar either at 15 or 20°C. Fruit set after hand pollination was almost identical for both self- and cross-pollination either
R. Socias I Company, A. J. Felipe
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Florivory can facilitate rain-assisted autogamy in a deceptive tropical orchid

The Science of Nature, 2021
Florivores and rainfall generally have negative impacts on plant fecundity. However, in some cases, they can mediate fruit set. Some plants face severe pollen-limited fecundity and any additional fruit set, even if from self-pollination, can be advantageous.
João Custódio F, Cardoso, Steven D, Johnson, Artur A, Maciel, Paulo E, Oliveira   +3 more
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Autogamy in Paramecium polycaryum

The Journal of Protozoology, 1954
Mass cultures of a stock of Paramecium polycaryum maintained over a period of several years showed abundant and frequent nuclear reorganization stages resembling those of ex‐conjugant and ex‐autogamous animals of other species of Paramecium. Conjugation has never been reported for P. polycaryum, nor has it been found in these studies.
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Rate of respiration in relation to autogamy inParamecium aurelia

Experientia, 1961
Die Atmung einzelner Pantoffeltierchen (Paramecium aurelia) aus Serien-isolierten Kulturen wurde mit Hilfe eines Cartesischen Tauchers gemessen. Die Messungen an Individuen vor und nach Autogamie (Selbstbefruchtung) zeigten, dass die Atmung nach Autogamie in signifikanter Weise ansteigt.
C R, PRINGLE, J M, STEWART
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Autogamy in Frontonia leucas (Ehrbg.)

The Journal of Protozoology, 1961
Autogamy in Frontonia leucas is described for the first time. The process appears to occur at irregular intervals. From 7 to 10% of the individuals are affected. The beginning of autogamy is marked by a swelling of all the micronuclei which take part in the first two maturation divisions.
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Artifact Autogamy in Sunflower¹

Crop Science, 1980
Prior to the development of autogamous cultivars, cross‐pollination was required for high yields of sunflower (Helianthus annuus L.). This research was undertaken to identify highly autogamous cultivars and to compare cloth and mesh bags in measuring autogamy for yield, achene weight, and achene oil percentage.
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Habitual autogamy in Linaria tursica Valdés et Cabezudo (Scrophulariaceae)

Flora, 1996
Summary Reproductive biology of Linaria tursica (Scrophulariaceae), a small annual species endemic to the coastal mobile sands of SW Spain was studied. Observations were made on flower and fruit development, pollen/ovule ratio (P/O), breeding system and pre-emergent reproductive success (PERS).
Benito Valdés, Zoila Díaz Lifante
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Induction of autogamy by transfer of macronuclear karyoplasm in Paramecium tetraurelia

Experimental Cell Research, 1983
Macronuclear karyoplasm was transplanted from pre-autogamous donor cells (clonal age, 22 fissions) into the macronucleus of young recipient cells (2 fissions after autogamy occurred) by means of microinjection. A reciprocal experiment was carried out by injecting karyoplasm from young clonal age donors into pre-autogamous recipients.
H, Kosciuszko, S, Koizumi
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Obligate autogamy inVicia fabaL.

The Journal of Agricultural Science, 1977
Data on the inheritance of a closed-flower type inVicia fabaand its effect on bee visits and out-crossing are presented.Closed flower was recessive to normal flower and segregation in theF2generation showed monofactorial inheritance. The flowers remained more or less closed, they lacked the typical scent and generally the bees avoided them.Six per cent
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