Results 101 to 110 of about 10,623 (232)

Ultraestructura y desarrollo de la pared celular del grano de polen del olivo (Olea europaea): I. Zona interapertural [PDF]

open access: yes, 1985
Se hace un estudio ultraestructural de la pared del grano de polen del olivo (Olea europaea), relacionando su desa rrol l o can la evolución de l grano , desde el estado de microspora j oven hasta l a dehiscencia de l a a ntera .
Fernández-Fernández, M.C.   +1 more
core  

The Analysis of SKP1 Gene Expression in Physiological Male Sterility Induced by Chemical Hybridizing Agent SQ-1 in Wheat (Triticum aestivum L.) [PDF]

open access: yes, 2015
Physiological male sterility induced by the chemical hybridizing agent (CHA) overcomes problems of maintenance of sterile lines and restorers. However, the mechanism of sterility is unclear.
Niu, N.   +6 more
core   +1 more source

Koiran näköaistin ominaispiirteet : kirjallisuuskatsaus [PDF]

open access: yes, 2017
Näköaistin toiminta perustuu valon havaitsemiseen. Tämä kirjallisuuskatsaus esittelee lyhyesti näköhavainnon synnyn, sekä kokoaa kirjoittamishetkellä olevan tiedon koirien näköaistin erityispiirteistä. Työ keskittyy terveen aikuisen koiran näköaistiin ja
Myller, Anne
core  

Anther and pollen development in the lodgepole pine dwarf mistletoe (Arceuthobium amercanum) staminate flower [PDF]

open access: yes, 2014
The lodgepole pine dwarf mistletoe, Arceuthobium americanum Nutt. ex Engelm., is a parasitic angiosperm that infects conifers in western Canadian forests.

core   +1 more source

The eyes of the deep diving hooded seal (Cystophora cristata) enhance sensitivity to ultraviolet light [PDF]

open access: yes, 2015
The mammalian visual range is approximately 400-700nm, although recent evidence suggests varying ultraviolet (UV) extensions in diverse terrestrial species.
Douglas, R. H.   +6 more
core   +4 more sources

Radioautographic visualization of incorporation of lipid precursors into anthers of Muscari comosum (L.) Mili.

open access: yesActa Societatis Botanicorum Poloniae, 2015
Incorporation of the following lipid precursors: DL-mevalonic acid-2 3H, 3H palmitic acid and acetic acid-3H sodium salt, into the anther cells of Muscari comosum (L.) Mili. has been investigated.
Barbara Gabara
doaj   +1 more source

A Comparative Study on Tapetum

open access: yesCYTOLOGIA, 1962
1. Division synchronization being taken as criterion, different cases of tapetum are classified into three types: 1) synchronized type, 2) asynchronized type and 3) intermediate type.3). In the synchronized type second division takes place and further divisions may also occur.
openaire   +2 more sources

Polarized light detection in spiders [PDF]

open access: yes, 2001
Copyright © 2001 The Company of BiologistsWe describe here the detection of polarized light by the simple eyes of spiders. Using behavioural, morphological, electrophysiological and optical studies, we show that spiders have evolved two different ...
Dacke, M., Doan, T., O'Carroll, D.
core  

OsACOS12, an orthologue of Arabidopsis acyl-CoA synthetase5, plays an important role in pollen exine formation and anther development in rice [PDF]

open access: yes
RT-PCR analysis of acos5/acos5 background plants using the primer pair LP/RP, LB/RP and LB/LP.
Cheng Zhang   +7 more
core   +3 more sources

ZmINVAN6 Regulates Anther Dehiscence and Pollen Fertility in the Genotype‐Dependent Way in Maize

open access: yes
Plant, Cell &Environment, EarlyView.
Ge Yan   +8 more
wiley   +1 more source

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