Results 81 to 90 of about 1,617 (146)

Anatomía y desarrollo de la flor estaminada, microsporogénesis y microgametogénesis en especies deLophophytum (Balanophoraceae) en la Argentina

open access: yesBoletín de la Sociedad Argentina de Botánica
Se estudió la anatomía y desarrollo de la flor estaminada, microsporogénesis y microgametogénesis de Lophophytum leandrii y Lophophytum mirabile subsp. bolivianum, a fin de aportar datos para el conocimiento y taxonomía del género.
Héctor A.  Sato , Ana M. Gonzalez
doaj   +1 more source

Comparison of flower bud development in almond, apricot and peach genotypes

open access: yesInternational Journal of Horticultural Science, 2006
The phenological processes of flower bud development of stone fruits during dormancy are not thoroughly known. The yield of these species, especially of almond, apricot and peach is determined basically by dormancy of flower buds, the survival rate of ...
L. Szalay
doaj   +1 more source

The molecular-genetic effects of genome duplication in winter rye (Secale cereale L.)

open access: yesФактори експериментальної еволюції організмів, 2013
Aims. Studying of the molecular-genetic effects of genome duplication in winter rye on cellular, protein and DNA levels. Methods. Cytologic analysis of the chromosome number, the microsporogenesis, karyotype analysis with use C-banding, electrophoresis ...
I. S. Gordei, N. B. Belko, I. A. Gordei
doaj  

Pollen production in sunflower (Helianthus annuus L.) is affected by air temperature and relative humidity during early reproductive growth [PDF]

open access: yes, 2013
During microsporogenesis, sunflower florets might be exposed to episodes of day- and night-time temperatures exceeding 30 and 20 °C, respectively, that can affect pollen availability and consequently plant’s yield.
Hernández, Luis Francisco, Astiz, V.
core   +1 more source

Anther structure and pollen development in Jurinea kilaea Azn. (Asteraceae)

open access: yesCaryologia
In this study, anther wall structure and the embryological features of male gametophyte development in Jurinea kilaea from Asteraceae family are described for the first time. Capitula of different sizes containing young flower buds of J.
Nuran Ekici
doaj   +1 more source

Effects of endogamy on microsporogenesis in popcorn

open access: yesCrop Breeding and Applied Biotechnology, 2007
Inbred lines are necessary for the development of popcorn hybrids. Genes for several traits, among them those related to the meiotic process, approach homozygosis during inbreeding.
Maria Suely Pagliarini   +3 more
doaj  

Título en español.

open access: yes, 1960
The chromosome number and reproductive behavior of Giant Pangola, a type of Digitaria valida Stent, were determined to evaluate the possibility of using it in a breeding program. It was also described and verified taxonomically. The observations revealed
Sotomayor-Ríos, A.
core   +1 more source

Relación entre la megasporogénesis y la microsporogénesis en el centeno, "Secale cereale" L

open access: yes, 1989
Here we present a study about male and female meiosis and gametogenesis development as well as their relationships. Meiosis has a simultaneous start in the male and female part of the flower but later male cells develop quickly untill the end of meiosis,
Merino de Cáceres, Fuencisla   +1 more
core  

Microsporogénesis de tres variedades de Cicer Arietinum L. y de sus híbridos

open access: yes, 1967
Se estableció de un modo claro y convincente un número haploide de 8 para las variedades Cicer arietinum var. macrocarpum, C. arietinum var. vulgare y C. arietinum var.
Larrea Reynoso, Edgar   +1 more
core  

Anatomía y desarrollo de estambres y carpelos en Drimys granadensis (Winteraceae)

open access: yes, 2014
La familia Winteraceae ha sido tradicionalmente considerada como de diversificación temprana entre las angiospermas por varios caracteres, entre ellos: flores con muchas partes distribuidas en espiral y ovario apocarpico formado por carpelos de tipo ...
Marquínez Casas, Xavier   +1 more
core   +1 more source

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