Results 171 to 180 of about 7,825 (215)

Fetal development in cattle with multiple ovulations

Journal of Animal Science, 1992
Treatment of lactating and nonlactating parous cows (n = 379) with 12 mg of FSH-P to evaluate development of multiple bovine fetuses resulted in ovulation rates ranging from 1 to 27 corpora lutea (CL). Fertilization rate (i.e., ova fertilized at 6 to 8 d postmating, 80.0%) was not affected by ovulation rate.
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The Hormonal Control of Ovulation and Early Development

Postgraduate Medicine, 1958
(1958). The Hormonal Control of Ovulation and Early Development. Postgraduate Medicine: Vol. 24, No. 6, pp. 654-660.
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Genetic and Phenotypic Analysis of Ovule Development in Arabidopsis

2023
The plant seed is a remarkable structure that represents the single most important energy source in global diets. The stages of reproductive growth preceding seed formation are particularly important since they influence the number, size, and quality of seed produced. The progenitor of the seed is the ovule, a multicellular organ that produces a female
Dayton C, Bird, Chao, Ma, Sara, Pinto, Weng Herng, Leong, Matthew R, Tucker   +4 more
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The molecular and genetic control of ovule development

Current Opinion in Plant Biology, 1999
A genetic approach has resulted in an extensive framework for the methodical analysis of ovule development. The most recent progress was accomplished in the areas of primordium formation and integument morphogenesis. Furthermore, systematic screens have identified a number of gametophytic mutations disrupting several distinct steps of embryo sac ...
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Gypsy embryo specifies ovule curvature by regulating ovule/integument development in rice

Planta, 2005
The embryo position in a seed is stable in most plant species, indicating the existence of a strict regulatory mechanism that specifies the embryo position in the seed. To elucidate this mechanism, we analyzed the gypsy embryo (gym) mutant of rice, in which the position of the mature embryo in the seed is altered at a low frequency.
S, Yamaki, H, Satoh, Y, Nagato
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Arabidopsis ovule development and its evolutionary conservation

Trends in Plant Science, 2008
Ovules have an important role during the life cycle of the plant, and they provide an excellent model for studying organogenesis in plants. As such, the molecular control of ovule development has been studied for many years. Recent studies in Arabidopsis have revealed important new data concerning ovule primordia formation, ovule identity determination,
L. Colombo, R. Battaglia, M.M. Kater
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The molecular and genetic basis of ovule and megagametophyte development

Seminars in Cell & Developmental Biology, 1998
The formation of ovules is a key step in the plant life cycle which alternates between a diploid and haploid generation, the sporophyte and the gametophyte. The transitions between the two generations in the female occur in the ovule, the site of meiosis, female gametogenesis and double fertilization.
U, Grossniklaus, K, Schneitz
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Ovule and seed development in Droseraceae

Acta Botanica Neerlandica, 1989
SUMMARY A structural analysis of ovule and seed development in the four genera of the Droseraceae is given. The ovule primordia of the Droseraceae are dizonate. The integuments are dermal in origin. The ovules of Dionaea, Aldrovanda and Drosera are characterized by nucellar elongation and strongly enlarged cells of the nucellar epidermis.
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Development of Ovule and Megagametophyte in Pomegranate

Botanical Gazette, 1947
The ovule of pomegranate is anatropous. The formation of the megagametophyte is of the "normal" type, which is characterized by the fact that there occur five successive nuclear division stages in the origin of the egg cell from the megaspore mother cell and also by the fact that only one megaspore is involved in the formation of the eight-nucleate ...
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Follicular Development and Induction of Ovulation in the Pregnant Mouse

Endocrinology, 1969
Ovulation can be induced in mice at any stage of pregnancy by the subcutaneous injection of 5 IU of human chorionic gonadotropin (HCG). There are, however, temporal differences in the percentage of animals ovulating and the average number of eggs ovulated. From days 2 to 11 of pregnancy (day 1 = day of vaginal plug) most animals ovulated 10–12 ova.
G S, Greenwald, J B, Choudary
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