Results 251 to 260 of about 15,023,284 (301)

Embryo Sac Development in Moquiniella

Nature, 1965
THE Loranthaceae are characterized by extremely long embryo sacs the tips of which reach up to various lengths in the style1. In four genera—Barathranthus2, Helixanthera3, Tapinostemma4, and Tupeia5—they invade the stigma ascending as far as its apex. While working on Moquiniella rubra (Spreng.
B. M. JOHRI, B. RAJ
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Antipodal complex development in the embryo sac of wheat

Russian Journal of Developmental Biology, 2011
Dynamics of an antipodal complex formation in wheat (Triticum aestivum L.) has been observed in detail using a reconstruction of serial semifine sections. Three consecutive crucial stages have been identified in the development of the antipodal complex: (1) proliferation of initial cells, (2) growth and functional differentiation of antipodal cells ...
I A, Chaban, E M, Lazareva, N V, Kononenko, V Iu, Poliakov   +3 more
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Development of the Embryo-Sac in the Genus Limnanthes

American Journal of Botany, 1951
On the course of the process of mutation in the cells of the dormant embryo within the seed. Compt. Rend. (Doklady) Acad. Sci. URSS 26: 948-951. RANDOLPH, L. F. 1935. Cytogenetics of tetraploid maize. Jour. Agric. Res. 50:591-605. RANDOLPH, L. F. 1950. Cytological and phenotypical effects induced in maize by X-rays and the Bikini Test Able atomic bomb.
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DEVELOPMENT OF THE EMBRYO SAC AND EMBRYO OF TEFF, ERAGROSTIS TEF

Canadian Journal of Botany, 1966
A careful study of the floral development of Eragrostis tef indicates that the flowers do not open and that self-pollination is the rule. Observations of the development of the female gametophyte show that it is of the normal monosporic type common to most angiosperms. The three antipodals divide several times as is common in grasses.
Melak H. Mengesha, A. T. Guard
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Embryo-Sac Development in Yucca Rupicola

American Journal of Botany, 1937
STAGES IN the development of the embryo-sac in species of Yucca have been noted by several investigators, most of whom have described isolated observations with little effort to record the sequence of developmental events. Koernicke (1901) discovered the formation of a linear tetrad of macrospores in Y.
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ULTRASTRUCTURE OF THE DEVELOPING EMBRYO SAC OF SPINACH

Acta Botanica Neerlandica, 1981
SUMMARY The ultrastructure of the embryo sac of spinach (Spinacia oleracea L. cv. Prevital) has been studied from the inception of the constituent cells to the time of fertilization. The development shows two phases. One is from cell formation until cell maturity and the second from maturity to the fertilizable stage. During the first phase the cell
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Embryo sac development inEuphorbia

Experientia, 1953
Vier Anlagemuster der Entwicklung sind fur den Embryosack vonEuphorbia festgestellt worden. Der gewohnliche, normale Typus wurde bisher in 25 Arten aufgefunden. Funf weitere Arten konnten vom Autor dieser Liste beigefugt werden. Die typische achtkernige Anordnung wird aufgefasst als Resultat der Wechselwirkung elektrischer Ladungen, welche an den acht ...
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Embryo sac development in Arabidopsis thaliana

Sexual Plant Reproduction, 1990
Aspects of megasporogenesis in Arabidopsis thaliana have been investigated using a variety of histochemical techniques to visualize general cell organization, DNA and callose in whole ovules and sections by bright field, fluorescence, differential interference contrast and scanning electron microscopy.
MaryC. Webb, BrianE.S. Gunning
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Development of Embryo Sac in Grindelia squarrosa

Botanical Gazette, 1926
1. The ovule of Grindelia squarrosa has one thick integument; the nucellus consists of one layer of cells outside the archesporial cell, which latter functions directly as a macrospore mother cell. 2. The macrospore tetrad consists of a row of four substantially equal cells, of which the chalazal one always gives rise to the embryo sac. 3.
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