Results 81 to 90 of about 718 (185)

Anther Number, Anther Apical Appendages, and Pollination Biology of Calyptocarpus vialis Lessing (Heliantheae: Asteraceae) [PDF]

open access: yes, 2019
The numbers of disk floret anthers of Calyptocarpus vialis in Wichita County, Texas form a consecutive series of one to four; four anthers (71%) and three anthers (27%) were most common.
Estes, James R.
core   +1 more source

Construction of two genetic linkage maps in cultivated tetraploid alfalfa (Medicago sativa) using microsatellite and AFLP markers

open access: yesBMC Plant Biology, 2003
Background Alfalfa (Medicago sativa) is a major forage crop. The genetic progress is slow in this legume species because of its autotetraploidy and allogamy. The genetic structure of this species makes the construction of genetic maps difficult. To reach
Santoni Sylvain   +6 more
doaj   +1 more source

Additional file 6 of Can ploidy changes propel the evolution of allogamy in a selfing species complex?

open access: yes
Additional file 6. Reproductive investment among populations for (a) male function measured as pollen production, (b) female function measured as ovule amount and (c) the relative investment between male and female function estimated as P:O ratio.
García-Muñoz, Ana   +11 more
openaire   +1 more source

Reproductive ecology of Aegialitis rotundifolia Roxb., A crypto-viviparous mangrove plant species in Krishna mangrove forest, Andra Pradesh

open access: yes, 2017
Aegialitis rotundifolia is a hermaphroditic, self-compatible species with mixed breeding system. The floral characters indicate melittophilous pollination syndrome.
Jacob Solomon Raju Aluri   +1 more
core   +1 more source

Reproductive Biology of Goodyera Oblongifolai (Orchidaceae)

open access: yes, 1975
Discovery of a large population of Goodyera oblongifolia Raf. prompted this investigation. Since some northern temperate orchids are known to have replaced or supplemented allogamy (cross-pollination) with autogamy (self-pollination) and asexual ...
Ackerman, James D.
core   +1 more source

Additional file 5 of Can ploidy changes propel the evolution of allogamy in a selfing species complex?

open access: yes
Additional file 5. Mean values of seedset estimated from (a) selfing and (b) outcrossing treatments for each population. Green bars refer to diploid, blue bars to tetraploid, and purple bars to hexaploid populations. Different letters indicate significant differences among ploidies according to the Tukey's test. Significance p-values indicate the ANOVA
García-Muñoz, Ana   +11 more
openaire   +1 more source

Pollinisation Du Carthame (Carthamus Tinctorius L.) Ses effets Sur La Formation Et La Germination Des Semences

open access: yes, 1976
ln the safflower seed setting may occur naturally by autopollination, but it is known that the outcome of autopollination caused by in sect s\u27 visits on flowers, especially those of honeybees, is setting of more seeds of which size and weight are ...
Barbier, E.
core   +1 more source

AFLP analysis of Genetic Diversity Among Different Jatropha curcas L. Genotypes from Africa and Ecuador [PDF]

open access: yesTropicultura, 2018
Six populations amounting to a total number of seventy genotypes of Jatropha curcas L. originating from Africa (Senegal, Mali, Burkina Faso and Madagascar) and Ecuador were investigated for genetic diversity using two AFLP primer combinations.
Konan, NO., Nacoulima, LN., Diouf, FH.
doaj  

Sex determination in flowering plants

open access: yes, 1993
In most species of flowering plants, cross-pollination (allogamy) is a common breeding mechanism. Outcrossing avoids the deleterious effects of inbreeding depression and promotes het-erozygosity, genetic variability, and genetic exchange ...
Stephen L. Dellaporta, Ro Calderon-urrea
core  

Additional file 2 of Can ploidy changes propel the evolution of allogamy in a selfing species complex?

open access: yes
Additional file 2. Mean values of fitness components estimated from (a) selfing and (b) outcrossing treatments for each ploidy. The fitness components were seedset, measured as the proportion of filled seeds by the total ovule production; fertility, as the proportion of fertilised ovules (seeds and aborts) by the total ovule production; and fertility ...
García-Muñoz, Ana   +11 more
openaire   +1 more source

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