(n.) That part of the stamen containing the pollen, or fertilizing dust, which, when mature, is emitted for the impregnation of the ovary.
Example Sentences:
(1) The spatial distribution of transcripts in the anther wall was confined to that region of the anther that surrounds the locule.
(2) Two hundred and twenty-six patients were scratch tested over a 10-month period with the pollen and anthers of six common hay fever plants.
(3) Houston bring on Weaver for Bruin (who has cut a rather lonely figure up front, all alone) 3.38am GMT 72 mins SKC win anther corner and Zusi puts it into the right area but again it's met by a Houston head.
(4) mRNA levels for these cDNA clones were markedly reduced in the anthers of several independent male-sterile mutants of tomato.
(5) Particulate fractions from mature rape anther tissue catalysed the incorporation of glucose from UDPglucose into endogenous lipids.
(6) In the blind mutant, whose flower limbs are transformed into antheroid structures on top of normal tubes, identical expression levels of both genes were observed in the antheroid structures as in normal anthers.
(7) The tissue localization of transcripts corresponding to five anther-specific cDNA clones isolated from tomato was determined.
(8) Rice (Oryza sativa L., 2n=24) anthers containing microspores in the early-uninucleate to first-mitosis stages were induced successfully to develop into plants in vitro through an intermediary step of callus formation.
(9) We traced the patterns of cell division during maize anther development by inducing sector boundaries that preceded the earliest events of anther initiation.
(10) Furthermore, the absence of immunoreactive CHI was demonstrated in a mutant of P. hybrida (genotype popo) which accumulates 2',4,4',6'-tetrahydroxy-chalcone in anthers as a consequence of lack of enzyme activity.
(11) The strong correlation between cell lineage and cell fate in the maize anther has implications for studies on plant evolution and the genetic improvement of cereals by DNA transformation.
(12) A total of 19 independent cDNAs have been isolated by differential screening whose temporal expression patterns overlap and which together cover the stages of anther development from pre-meiotic microsporocytes to tri-nucleate pollen grains.
(13) In anthers, expression was detected at an earlier stage of flower development with GUS activity restricted to the tapetal cell layer.
(14) With both constructs, the appearance of GUS activity in developing anthers was correlated with the onset of microspore mitosis and increased progressively until anthesis (pollen shed).
(15) This promoter construct was subsequently used to drive an antisense chs gene in transgenic petunia, which led to the inhibition of pigment synthesis in anthers of five of 35 transformants.
(16) Ultra-thin sections of vegetative tissues from birch (anthers and leaves) were labeled for pollen antigens and allergens using a commercial rabbit IgG antibody preparation directed against birch pollen antigens and allergens.
(17) At flower maturity, transcripts specified by each of the cDNAs were also detected in the epidermal and endothecial cell layers of the anther wall.
(18) In petunia, the gene Po regulates the expression of CHI in anthers: PoPo petunia lines contain CHI enzyme activity in petals and anthers, whereas popo lines contain the CHI enzyme only in petals but not in anthers.
(19) In flowers, expression was observed in sepals, anthers, and carpels, but not in petals.
(20) Transgenic plants with white anthers were male sterile due to an arrest in male gametophyte development.
Ovule
Definition:
(n.) The rudiment of a seed. It grows from a placenta, and consists of a soft nucleus within two delicate coatings. The attached base of the ovule is the hilum, the coatings are united with the nucleus at the chalaza, and their minute orifice is the foramen.
(n.) An ovum.
Example Sentences:
(1) Eight-week-old virgin untreated female mice were induced to ovulate using equine chorionic gonadotropin (eCG) and human chorionic gonadotropin (hCG), and were then caged with males overnight.
(2) The total content of both thyroid hormones in the oocytes increased throughout most of the ovarian cycle as the oocytes increased in size from less than 2 mg to approximately 6.5 mg by ovulation.
(3) GnRH infusion produced an immediate increase in plasma LH concentrations in the mares that ovulated during the infusion period and LH levels peaked at the time of ovulation.
(4) An experimental model was established in the ewe allowing one to predict with accuracy an antral follicle that coincidentally would either undergo ovulation (6-8 mm diameter) or atresia (3-4 mm diameter) following synchronization of luteal regression and the onset of the gonadotropin surge.
(5) We conclude that plasma LAP measurements have little value in monitoring ovulation induction therapy.
(6) The mean ovulation age for the 728 abortuses was 63.4 days (range 33--109 days).
(7) These results strongly suggest that urinary GAGs determination is a precise method for ovulation detection.
(8) These findings suggest, not only that cAMP production alone is sufficient for ovulation, but also that the receptor specificity of the cAMP production is important for the number of ovulations.
(9) These cells produce a neurohormone which stimulates ovulation.
(10) Following parturition, NONLAC cows averaged 4.0 d to negative EB nadir and 14.3 d to first ovulation.
(11) LH serum levels were measured by radioimmunoassay on 10 women who were near the time of presumed ovulation.
(12) Bactrian camels (63 female female, 8 male male) were used in the breeding season to determine the factors that will induce ovulation.
(13) A dose of 3.75 mg and even 4.0 mg of conjugated estrogen was not sufficient to inhibit ovulation.
(14) During 70 days or so from the time of recruitment until just before the beginning of the cycle during which a follicle is destined to ovulate, folliculogenesis is a continuous process dependent on gonadotrophins but independent of the fluctuations in their concentrations occurring during this time.
(15) In all patients buserelin clearly suppressed ovulation.
(16) Repeated laparoscopy in the same animal throughout the menstrual cycle showed by morphological and hormonal criteria that this technique does not significantly influence follicular growth, ovulation, luteal function or cycle length.
(17) 6-OHDA administered intraventricularly in doses 200-500 mug caused temporary blockade of ovulation.
(18) The data are expressed as percent inhibition of ovulation in the treated vs. the untreated ovaries.
(19) Circular cuts which surgically isolated the medial basal hypothalamus (MBH) from the remainder of the brain did not prevent copulation 4 to 24 h later, but did block reflex ovulation.
(20) In spite of small corpora lutea and increased follicular activity, none of the prednisolone treated heifers showed signs of oestrogen influence, and the two animals slaughtered 26 days after the start of treatment, did not ovulate or show signs of oestrus.