Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
Reproductive biology of Ficus erecta Thunb

LI Hong-Qing,

生态学报 , 2001,
Abstract: In the presentstudy the featuares of reproductive biology of Ficuserecta Thunb.was investigat- ed. In spring,there was no female syconia or well developed male flowers,but full of gall flowers which acted as necessary reproductive and developmental sites for pollinators( Blastophaga sp.) ;whereas,in summer to autumn,itwas the reproductive period of fig trees when female syconia and well developed an- thers appeared.The female and male phases encountered in March to April and in June to August.Usual- ly...
Reproductive effects of Ficus asperifolia (Moraceae) in female rats
P Watcho, E Ngadjui, NP Alango, NT Beno t, A Kamanyi
African Health Sciences , 2009,
Abstract: The reproductive effects of Ficus asperifolia in female rats were investigated in the present study. Sperm-positive adult female rats were orally administered (P.O.) either the aqueous and methanol extracts of Ficus asperifolia (100 and 500mg/kg), distilled water (10ml/kg) or 5%Tween 80 (10ml/kg) for seven days. On day 10 of pregnancy, the implantation sites were recorded. In the fertility study, adult female rats received the same test substances for 21 days and, the fertility index and litter size determined. In the uterotrophic test, normal and ovariectomized immature rats were treated for seven days with the dry extract of Ficus asperifolia (100 and 500mg/kg) in the absence and presence of 17a-estradiol benzoate 1μg/animal/day, s.c. On day 8, the uterine growth index was measured. Results of the study showed a significant increase (p<0.05) in the implantation sites and litter size of animals receiving 100mg/kg of the aqueous extract of Ficus asperifolia . In the estrogenic assay, normal immature rats were sensitive to the treatment with Ficus asperifolia than the ovariectomized ones. Our results give added scientific support to the popular use of Ficus asperifolia in the treatment of some cases of women's sterility/infertility related problems
Two-Stage Rooting of Adventitious Buds of Ficus beipeiensis in Tissue Culture

WANG Yun-ye
,TONG Hong-yu,ZHOU Xiao-xue,ZHOU Qi-gui,LI Juan,TANG Shao-hu

- , 2018, DOI: 10.13718/j.cnki.xdzk.2018.12.007
Abstract: 以北碚榕组培不定芽为外植体,采用两段生根法生根(在琼脂培养基中诱导不定根发生,在近黑暗多孔隙基质中完成根系发育)并将其与一般生根法比较,培养30 d后统计2种方法的生根率,测定生根苗生长与生理指标;生根苗移栽30 d后统计移栽成活率,测定移栽苗生长指标.试验结果表明:二者生根率均为100%;与一般生根法相比,两段生根后生根苗的根尖数、总根长、根总体积和根平均直径分别提高301.42%,27.85%,123.53%和9.68%;生根苗的株高和叶片增量分别提高307.89%和83.33%,叶绿素含量和硝酸还原酶活性分别提高13.09%和297.29%;生根苗的移栽成活率(100%)、移栽苗的株高和叶片增量分别提高15.00%、41.12%和23.81%,且二者间差异有统计学意义.实验结果证明,两段生根法显著优于一般生根法.所得试管苗根系发达,移栽成活率更高,生长状态更佳.两段生根法对于其它植物的组培生根有应用价值.
The adventitious buds of Ficus beipeiensis were used as explants and a two-stage rooting method was used to generate roots (inducing adventitious roots in an agar medium and completing root development in a near-dark multi-porous matrix), and the results were compared with those of the general rooting method. The rooting rate was calculated and the growth and physiological indexes of the rooted plantlets were measured after they were cultured for 30 days. Their survival rate was counted and their growth indexes were measured 30 days after transplanting. The test results showed that the rooting rate of both methods was 100%. Compared with the general rooting method, the two-stage rooting method increased the number of root tips, total root length, total root volume and average root diameter of the rooted plantlets by 301.42%, 27.85%, 123.53% and 9.68%, respectively; enhanced plant height and leaf increment by 307.89% and 83.33%; and raised chlorophyll content and nitrate reductase activity 13.09% and 297.29%, respectively. All the rooted plantlets survived after transplanting, and the survival rate, plant height and leaf number were increased by 15.00%, 41.12% and 23.81%, respectively, and the differences between the two methods were statistically significant. In conclusion, the two-stage rooting method was significantly better than the general rooting method. The root system of the test-tube plantlets was well-developed, the survival rate after transplanting was higher, and the growth state was better. The two-stage rooting method has application value for the rooting of other plants in tissue culture
Reproductive Biology of Evolvulus alsinoides L. (Medicinal Herb)  [PDF]
K.P. Singh,Bhavana,G. Dhakre
International Journal of Botany , 2010,
Abstract: Reproductive biology provides information on life forms, rate of flowering, type of breeding system, plant-pollinators interaction, fruit and seed output, overall fitness and survival of the species. The present study was carried out to reproductive biology of Evolvulus alsinoides Linn. (Convolvulaceae) is a medicinal herb of semi arid zone of Agra in North India. The study was carried out for a period of twenty four months to observe the reproductive parameters of the E. alsinoides in the different places of Agra. The flowers appear from February to June and attracted the vide variety of insects for the pollination. The fruiting nature indicates that maximum number of flowers set into fruit by xenogamy as compared to geitonogamy.
Reproductive Biology and Endocrinology – First year anniversary
Antonin Bukovsky
Reproductive Biology and Endocrinology , 2004, DOI: 10.1186/1477-7827-2-27
Abstract: The most accessed articles are those originating from thematic mini-review fora, which have been initiated and co-ordinated by editorial board members. They include: "Recent advancements in corpus luteum development, function, maintenance and regression" – coordinated by Dr. John S. Davis and Dr. Bo R. Rueda, "Ovarian cancer" – coordinated by Dr. Peter C. K. Leung, "New technologies for genetic manipulation of animal models" – coordinated by Dr. John F. Engelhardt and Dr. Ziyi Li, "Toward therapeutic cloning and regenerative biology research" – coordinated by Dr. Xiangzhong Yang, "Fertility and pregnancy" – coordinated by Dr. Marek Glezerman, "Extracellular matrix" coordinated by Dr. Daniel D. Carson, "Frontiers in reproductive immunology" – coordinated by Dr. Peter J. Hansen, and "New approaches to male infertility" – coordinated by Dr. Maciej K. Kurpisz. Forum "Mini reviews on Trophoblast" – coordinated by Dr. Thomas E. Spencer and Dr. Fuller W. Bazer, is currently close to be completed. In addition, a set of mini-review articles from "International Embryo Transfer Society Post Conference Proceedings" – coordinated by Dr. Don P. Wolf, Dr. Richard L. Stouffer and Dr. Mary B. Zelinski-Wooten, is under preparation for publication. In the near future, the Reproductive Biology and Endocrinology editorial board will continue to determine important topics for thematic mini review series and invite leading scientists to contribute.Reproductive Biology and Endocrinology represents a global platform for reproductive and developmental biologists, reproductive endocrinologists, immunologists, theriogenologists, infertility specialists, obstetricians, gynecologists, andrologists, urogynecologists, specialists in menopause, reproductive tract oncologists, and reproductive epidemiologists. The journal scope covers gametogenesis, fertilization, early embryonic development, embryo-uterus interaction, reproductive development, pregnancy, uterine biology, endocrinology of reproducti
Temperament and reproductive biology: emotional reactivity and reproduction in sheep
Blache, Dominique;Bickell, Samantha L.;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010001300044
Abstract: reproductive capacity is controlled by a large number of factors such as season, social interactions and metabolic status. however, the influence of emotional reactivity on reproductive success has not been intensively investigated in farm animals. in this review, we define emotion reactivity and the expression of its inter individual variability named temperament. we briefly describe our protocol to measure temperament in sheep and discuss the heritability of temperament traits. using the results obtained from our flock of sheep selected for calm or nervous temperament, we illustrate how this selection affects the reproductive biology from changing the inexperienced ewe's response to the male effect to improving lamb survival and ovulation rate. we conclude that the mechanisms by which selection for temperament affects the different steps of the reproductive cycle are not yet understood but nevertheless this type of selection could have a great impact on reproduction efficiency of sheep and other domestic ruminants.
Reproductive biology in species of Bidens L. (Asteraceae)
Grombone-Guaratini, Maria Tereza;Solferini, Vera Nisaka;Semir, Jo?o;
Scientia Agricola , 2004, DOI: 10.1590/S0103-90162004000200010
Abstract: studies about reproductive biology of weed species can have implications on the establishment of controlling practices that minimize the effects of these weed populations on agricultural fields. the pollination biology of bidens alba (l.) dc., b. pilosa l., and bidens subalternans dc., was studied at different sites and climatic seasons. bidens pilosa and b. subalternans are widely distributed in agricultural areas, in disturbed habitats, and along road sides. bidens alba occur only along the coast. the three species are self-compatible and non agamospermous. the composition of the pollinator community changes during the year and between sites. hymenopterans and lepidopterans are the most frequent visitors to bidens species in both areas studied. although the species are self-compatible, the presence of pollinators may affect the levels of inbreeding. the attraction of insects by bidens species may be benefical to agricultural crop and may also have important implications for conservation biology.
Reproductive biology in species of Bidens L. (Asteraceae)  [cached]
Grombone-Guaratini Maria Tereza,Solferini Vera Nisaka,Semir Jo?o
Scientia Agricola , 2004,
Abstract: Studies about reproductive biology of weed species can have implications on the establishment of controlling practices that minimize the effects of these weed populations on agricultural fields. The pollination biology of Bidens alba (L.) DC., B. pilosa L., and Bidens subalternans DC., was studied at different sites and climatic seasons. Bidens pilosa and B. subalternans are widely distributed in agricultural areas, in disturbed habitats, and along road sides. Bidens alba occur only along the coast. The three species are self-compatible and non agamospermous. The composition of the pollinator community changes during the year and between sites. Hymenopterans and lepidopterans are the most frequent visitors to Bidens species in both areas studied. Although the species are self-compatible, the presence of pollinators may affect the levels of inbreeding. The attraction of insects by Bidens species may be benefical to agricultural crop and may also have important implications for conservation biology.
Reproductive biology and pollination of Aechmea distichantha Lem. (Bromeliaceae)
Scrok, Gilson Jo?o;Varassin, Isabela Galarda;
Acta Botanica Brasilica , 2011, DOI: 10.1590/S0102-33062011000300009
Abstract: reproductive biology, including phenology, flower biology, pollination, and the reproductive system in the bromeliad aechmea distichantha were studied in an araucaria forest in the state of paraná. phenology and reproduction in terricolous plants were followed in october 2006 and may - october of 2007. flowering peaked from june to september and fruiting was from june to october. flower anthesis lasted one day. flowers were pollinated the most by the hummingbird stephanoxis lalandi and the most common butterfly visitor was lychnuchoides ozias ozias. nectar concentration declined during anthesis, while nectar volume was constant. aechmea distichantha is self-compatible with 30-45% fruit formation in self-pollination tests. sunlight influences reproduction: when controlling for bromeliad and inflorescence size, plants in sunlight produced more seeds per fruit than plants in the shade. reproduction was also associated with inflorescence size when controlling for bromeliad size. that is, larger inflorescences in similar sized plants produced more flowers and more seeds per fruit.
Genomic and proteomic techniques applied to reproductive biology
John C Rockett
Genome Biology , 2001, DOI: 10.1186/gb-2001-2-9-reports4020
Abstract: Specialty meetings focused on the application of new genomic and proteomic technologies are increasingly common. One might romantically suppose that the genomics bandwagon ought to find no better propulsion system than the very engine to which the genome owes its immortality. And yet, ironically, the field of reproductive biology has been slower to incorporate post-genomic era approaches than many other biological disciplines. Frontiers in Reproduction (FIR), established in 1998, is an international training course held annually at the Marine Biological Laboratory, Woods Hole, USA. The six-week course is focused on techniques and concepts of advanced reproductive-biology research, and includes a two or three day symposium that addresses a high-profile research area. This year's FIR symposium offered the participants a look at some of the latest developments in the application of genomic and proteomic technologies to reproductive biology.Peter Schlegel (Weill Medical College of Cornell University, New York, USA) opened the symposium with an overview of male clinical infertility. There is a long list of abnormalities underlying infertility, the etiology of which is not always delineated before treatment with in vitro fertilization (IVF) techniques such as intra-cytoplasmic sperm injection (ICSI). One of the main problems, as later expressed by Dolores Lamb (Baylor College of Medicine, Houston, USA), is that the use of techniques such as ICSI allows conveyance of genetic deficiencies into the next generation, thus perpetuating infertility problems rather than treating them. Current genetic tests on infertile men are normally limited to karyotyping and Y-chromosome microdeletion analysis, both of which are relatively crude and do not evaluate the majority of genetic abnormalities. Hence, Schlegel argued that more thorough genetic testing should be carried out before all IVF treatments in order to assess the quality of the sperm.For those who do not realize, or sometimes
Page 1 /100
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.