Results 31 to 40 of about 8,699 (213)

Outcrossing rate and inbreeding depression in the herbaceous autotetraploid, Campanula americana [PDF]

Heredity, 2003
Polyploidy in angiosperms is frequently associated with an increase in self-compatibility. Self-fertilization can enhance polyploid establishment, and theory predicts reduced inbreeding depression in polyploids relative to diploids. Therefore, we may expect mating systems that promote self-fertilization or mixed-mating in polyploid species.
L F, Galloway, J R, Etterson, J L, Hamrick   +2 more
openaire   +2 more sources

Mosaic activation of the zebrafish hsp70l heat shock promoter: Implications for interpreting transgenes

Developmental Dynamics, EarlyView.
Abstract Background The promoters and enhancers of heat shock genes, such as the 1.5‐kb promoter of the zebrafish hsp70l gene, are valuable tools for temporal activation of transgenes. It has been widely purported that heat shock treatments result in ubiquitous expression of hsp70l‐driven transgenes.
Jong‐Su Park, Xiangyun Wei
wiley   +1 more source

Genome-wide association study of outcrossing in cytoplasmic male sterile lines of rice

Scientific Reports, 2017
Stigma exsertion and panicle enclosure of male sterile lines are two key determinants of outcrossing in hybrid rice seed production. Based on 43,394 single nucleotide polymorphism markers, 217 cytoplasmic male sterile lines were assigned into two ...
Liang Guo, Fulin Qiu, Harish Gandhi, Suresh Kadaru, Erik Jon De Asis, Jieyun Zhuang, Fangming Xie   +6 more
doaj   +1 more source

Outcrossing rates of marked poisson cluster processes in structural reliability

Applied Mathematical Modelling, 1988
A marked Poisson cluster process (PCP) is defined as a model for live loads in buildings. The outcrossing rate for this PCP and the superposition of such processes are derived for the determination of structural failure probabilities. For the equilibrium process a Poisson limit theorem for the failure probability and an asymptotic approximation for the
Schrupp, Karl, Rackwitz, Ruediger
openaire   +2 more sources

Variation in pollen limitation among reproductive modules points to likely resource reallocation in the alpine plant Veratrum grandiflorum

Nordic Journal of Botany, EarlyView.
Pollen limitation, a decrease in seed production due to insufficient pollen receipt, may influence plant demography and the evolution of sexual systems. Its empirical estimation of pollen supplementation of some of the flowers on an individual is well known to be prone to overestimation due to potential resource reallocation among the individual's ...
Xia Jiang, Kai‐Hsiu Chen, Shengman Lyu, Ling Liu, Meixian Yu, John R. Pannell, Guoxing Cao   +6 more
wiley   +1 more source

Studies on reproductive strategies of Vitex negundo L. var. heterophylla (Franch.) Rehder (Lamiaceae) based on morphological characteristics and SSR markers

Ecology and Evolution, 2020
Vitex negundo L. var. heterophylla (Franch.) Rehder (Lamiaceae) is an important tree species for soil and water conservation, yet the reproductive ecology of this species remains to be elucidated. To investigate the reproductive traits of V. negundo var.
Xiaohan Sun, Feng Wang, Rong Cui, Xiao Liu, Xiangxiang Li, Jibin Dong, Lu Sun, Siqi Qin, Renqing Wang, Peiming Zheng, Hui Wang   +10 more
doaj   +1 more source

Generalist‐pollinated Arabis alpina exhibits floral scent variation at multiple scales

Nordic Journal of Botany, EarlyView.
Plants that depend on animals for reproduction often use complex floral traits to attract pollinators. Floral scent is recognized as part of the pollinator attraction module and can be shaped by plant‐pollinator interactions. In recent decades, research has started to reveal the dynamic properties of floral scent, identifying patterns of spatial and ...
Hanna Thosteman, Katherine Eisen, Clara McNaughton Montgomery, Xuefei Cheng, Loretta Pace, Magne Friberg   +5 more
wiley   +1 more source

Outcrossing mating system in natural populations of the endangered aquatic fern Ceratopteris thalictroides in China as revealed by microsatellite markers: implications for conservation

Notulae Botanicae Horti Agrobotanici Cluj-Napoca
In this study, the mating system of the endangered aquatic fern Ceratopteris thalictroides in China was investigated using microsatellite markers. The estimates of the multilocus outcrossing rate (tm) and single-locus outcrossing rate (ts) were high at ...
Yuanhuo DONG, Chengyu SONG, Xueyi BAI, Jie WEI, Tingting NING, Guoquan XU, Hong LAN, Kuo LIAO, Hong LIU, Mengxue MA, Changli ZENG   +10 more
doaj   +1 more source

Sexual reproduction in invasive Japanese knotweed (Reynoutria japonica) in south Sweden

Nordic Journal of Botany, EarlyView.
To understand the potential for northward expansion of knotweeds into currently uninvaded regions, it is crucial to assess the potential for sexual reproduction alongside the ongoing vegetative spread. For that reason, we tested viability in Reynoutria japonica seeds in south Sweden, a region where viable seeds had not been previously reported ...
Tina D'Hertefeldt, Annette Andersson, Ellen Andersson, Bea Nerer, Mattias West, Alexander Zimmerman   +5 more
wiley   +1 more source

The Genetic Variability of Floral and Agronomic Characteristics of Newly-Bred Cytoplasmic Male Sterile Rice

Agriculture, 2018
Male sterility enabled commercialization of heterosis in rice but low seed set remains a constraint on hybrid dissemination. We evaluated 216 F6 maintainer lines for agronomic and floral characteristics in augmented design and selected 15 maintainer ...
Raafat El-Namaky
doaj   +1 more source