Results 71 to 80 of about 1,666 (209)

The phase change in ferns

open access: yesActa Societatis Botanicorum Poloniae, 2014
It is argued that the phasic alternation of sporophyte and gametophyte in ferns involves changing gene activation during oogenesis and sporogenesis respectively.
P. R. Bell
doaj   +1 more source

Reproductive behavior in maize-Tripsacum polyhaploid plants : implications for the transfer of apomixis into maize [PDF]

open access: yes, 1996
L'expression de l'apomixie gamétophytique chez les graminées est limitée aux formes polyploïdes. Au cours de notre programme de transfert de l'apomixie de #Tripsacum$ tétraploïdes diplosporiques (2n = 4x = 72) au maïs (2n = 20) par rétrocroisements ...
Berthaud, Julien   +4 more
core   +1 more source

Bangiales (Rhodophyta) in New Zealand: current state of knowledge and future directions

open access: yesNew Zealand Journal of Botany, Volume 63, Issue 5, Page 2245-2263, December 2025.
ABSTRACT Members of the red algal order Bangiales are morphologically simple, with the gametophyte generation consisting of either filaments or blades, and the sporophyte generation consisting of microscopic uniseriate branched filaments. An ancient lineage, the order is distributed worldwide.
Wendy A. Nelson, Giuseppe C. Zuccarello
wiley   +1 more source

Building a botanical foundation for perennial agriculture: Global inventory of wild, perennial herbaceous Fabaceae species

open access: yesPLANTS, PEOPLE, PLANET, Volume 1, Issue 4, Page 375-386, October 2019., 2019
Wild, perennial, herbaceous plant species have the capacity to provide both agricultural products and ecological services, such as soil stability and efficient absorption, over multiple years. Although perennial, herbaceous species are common in nature, these species were rarely domesticated.
Claudia Ciotir   +15 more
wiley   +1 more source

Reproductive strategy in the Ranunculus auricomus complex (ranunculaceae)

open access: yesActa Societatis Botanicorum Poloniae, 2014
A preliminary study of reproductive strategy was carried out on plants representing four cytotypes of the Ranunculus auricomus complex. Diploid plants reproduce sexually, triploids, tetraploids and hexaploids have an apomictic mode of reproduction ...
Romana Izmaiłow
doaj   +1 more source

Retro-Element Gypsy-163 Is Differentially Methylated in Reproductive Tissues of Apomictic and Sexual Plants of Cenchrus ciliaris

open access: yesFrontiers in Genetics, 2020
Apomixis, an asexual mode of reproduction through seeds, has immense scope for crop improvement due to its ability to fix hybrid vigor. In C. ciliaris, a predominantly apomictically reproducing range grass, apomixis is genetically controlled by an ...
Priyanka Rathore   +3 more
doaj   +1 more source

Development of a modified transformation platform for apomixis candidate genes research in Paspalum notatum (bahiagrass) [PDF]

open access: yes, 2014
The aim of this work was to improve existing transformation protocols and to transform specific genotypes of Paspalum notatum (bahiagrass) for functional analyses of candidate genes involved in reproduction.
Felitti, Silvina Andrea   +7 more
core   +2 more sources

Maternal haploid induction in maize via mutation of Gamete Expression protein 1

open access: yesPlant Biotechnology Journal, Volume 23, Issue 7, Page 2595-2607, July 2025.
Summary Doubled haploid (DH) technology, based on haploid induction (HI), is a crucial tool in enhancing crop‐breeding efficiency and has been successfully applied in various plant species. While many HI‐related genes have been identified using diverse strategies, the genetic basis and molecular mechanisms underlying HI remain incompletely understood ...
Yuhui Sun   +5 more
wiley   +1 more source

A Full‐Length Reference Floral Transcriptome of Boehmeria tricuspis Provides Insights into Apomeiosis and Polyploidy

open access: yesInternational Journal of Genomics, Volume 2019, Issue 1, 2019., 2019
Boehmeria tricuspis (Hance) Makino constitutes a hardy herbaceous or shrubby perennial native to East Asia that includes different ploidy levels and reproductive modes (diplosporous to sexual). Although several apomeiosis‐associated genes have been described, the genetic control and molecular mechanisms underlying apomeiosis remain poorly understood ...
Qing Tang   +8 more
wiley   +1 more source

Embryo sac development in some South African cultivars of Lantana camara

open access: yesBothalia: African Biodiversity & Conservation, 1982
Twenty embryo sacs from each of 20 different  Lantana camara L. cultivars naturalized in South Africa were examined. The normal sexual embryo sacs were monosporic 8-nucleated embryo sacs of the polygonum type and were encountered in 55% of the material ...
J. J. Spies, C. H. Stirton
doaj   +1 more source

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