Results 101 to 110 of about 1,463 (223)

No difference in plasticity between different ploidy levels in the Mediterranean herb Mercurialis annua. [PDF]

open access: yes, 2017
Increased phenotypic plasticity for a number of plant traits has been suggested as a possible reason for the success and spread of polyploids. One such trait is a plant's sex allocation (or gender), which influences its reproductive success directly as a
Pannell, J.R., Sánchez Vilas, J.
core   +1 more source

How to make a sex chromosome [PDF]

open access: yes, 2016
Sex chromosomes can evolve once recombination is halted between a homologous pair of chromosomes. Owing to detailed studies using key model systems, we have a nuanced understanding and a rich review literature of what happens to sex chromosomes once ...
A Auton   +113 more
core   +2 more sources

Genetic Control of Self-Incompatibility in Centromadia (Hemizonia) Pungens Subsp. Laevis (Madiinae, Asteraceae) [PDF]

open access: yes, 2002
The presence of self-incompatibility was tested in Centromadia pun gens subsp. laevis and the genetic basis of the self-incompatibility response was explored using crossing studies. We performed full diallel crossing experiments among 10 individuals from
Friar, Elizabeth A., LaDoux, Tasha
core   +3 more sources

Gender specialisation and stigma height dimorphism in Mediterranean Lithodora fruticosa (Boraginaceae). [PDF]

open access: yes, 2017
Dimorphism in style height has evolved repeatedly in flowering plants, with some individuals having short and others long styles; in the case of distylous species, stigma position varies reciprocally with that of the anthers.
Pannell, J.R.
core   +1 more source

Sex expression in monoecious cucumbers micropropagated in vitro

open access: yesBiologia plantarum, 2013
The effects of plant growth regulators (PRGs) on the induction of flowering and sex expression in micropropagated cucumbers are presented. The highest number of male flowers (6.0 ± 0.7 per plant) was produced by cv. Kmicic F1 on the Murashige and Skoog (MS) medium supplemented with 4.0 μM kinetin.
openaire   +2 more sources

Fine mapping and candidate gene analysis of gynoecy trait in chieh-qua (Benincasa hispida Cogn. var. chieh-qua How). [PDF]

open access: yesFront Plant Sci, 2023
Wang M   +9 more
europepmc   +1 more source

Gamete competition, gamete limitation, and the evolution of the two sexes [PDF]

open access: yes, 2017
Males and females are a fundamental aspect of human reproduction, yet procreation is perfectly possible without this division into two sexes. Biologically, males are defined as the sex that produces the smaller gametes (e.g.
Lehtonen, Jussi, Parker, Geoff A.
core  

Breeding systems and pollination modes of understorey shrubs in a medium elevation wet evergreen forest, southern Western Ghats, India [PDF]

open access: yes, 2006
This study on the reproductive biology and pollination modes of 22 species of understorey shrubs in 11 families was conducted in a medium elevation wet evergreen forest in the southern Western Ghats of India from 1994 to 1997. We evaluated whether this
Davidar, Priya, Soubadra Devy, M
core  

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