Results 91 to 100 of about 144,774 (218)

Diploid origins and early genome stabilization in the allotetraploid Arabidopsis suecica

open access: yesNew Phytologist, Volume 249, Issue 1, Page 524-538, January 2026.
Summary Polyploidization, followed by genome downsizing, is a recurrent evolutionary cycle that dramatically reshapes genome structure. Newly formed polyploids must quickly adjust their cell division machinery to maintain stable chromosome inheritance, while long‐term stabilization involves rediploidization, returning the genome to a diploid‐like state.
Robin Burns   +6 more
wiley   +1 more source

Brownian motion: a paradigm of soft matter and biological physics [PDF]

open access: yes, 2005
This is a pedagogical introduction to Brownian motion on the occasion of the 100th anniversary of Einstein's 1905 paper on the subject. After briefly reviewing Einstein's work in its contemporary context, we pursue some lines of further developments and ...
Agutter   +264 more
core   +1 more source

MEIOTIC MECHANISMS FOR 2N GAMETE FORMATION IN WILD BLUEBERRY SPECIES

open access: yesHortScience, 1993
In blueberries (Vaccinium spp), 2n pollen production has been identified in both diploid and tetraploid populations. High 2n pollen producers from diploid V. elliotti, diploid V. darrowi, and tetraploid V. pallidum were chosen for meiotic studies. Cytological examination revealed spindle abnormalities, including parallel spindles and tripolar spindles,
Debby M. Filler, Nicholi Vorsa
openaire   +1 more source

Introgression of Leptosphaeria maculans Resistance From Hexaploid Brassica Into Brassica napus

open access: yesPlant Pathology, Volume 75, Issue 1, January/February 2026.
Blackleg resistance was introgressed from resistant hexaploid Brassica. Phenotyping and genotyping was conducted to determine the presence of known resistance genes. The absence of resistance following phenotyping and genotyping suggests that novel resistance may have been introgressed from hexaploid Brassica.
Keval Shah   +7 more
wiley   +1 more source

Macro‐Hybrid and Micro‐Hybrid of Fish

open access: yesReviews in Aquaculture, Volume 18, Issue 1, January 2026.
ABSTRACT This study reviews the progress in fish breeding, focusing on distant hybridization and gynogenesis, and introduces the theory of macro‐hybrid and micro‐hybrid. The macro‐hybrid refers to the allo‐progeny derived from distant hybridization, including the allo‐progenies.
Qizhi Liu   +16 more
wiley   +1 more source

Finitely Generated Nil but Not Nilpotent Evolution Algebra [PDF]

open access: yes, 2014
To use evolution algebras to model population dynamics that both allow extinction and introduction of certain gametes in finite generations, nilpotency must be built into the algebraic structures of these algebras with the entire algebras not to be ...
Jianjun Paul, Tian, Yi Ming Zou
core  

Early Nutritional Programing: Unlocking the Potential of Fish for Sustainable Aquaculture

open access: yesAquaculture Nutrition, Volume 2026, Issue 1, 2026.
Nutritional programing, which explores the link between early nutritional conditions and their long‐term effects on animals, is a developing field within fish biology. Suboptimal nutritional status during early life is strongly associated with a higher risk of metabolic consequences later in life, including permanent growth retardation, impaired neural
Shivendra Kumar   +5 more
wiley   +1 more source

High temperature treatment induced production of unreduced 2n pollen in Camellia oleifera

open access: yesHorticultural Plant Journal
Unreduced gametes through chromosome doubling play a major role in the process of plant polyploidization. Our previous work confirmed that Camellia oleifera can produce natural 2n pollen, and it is possible to induce the 2n pollen formation by high ...
Hongda Deng   +7 more
doaj   +1 more source

Colchicine induced manifestation of abnormal male meiosis and 2n pollen in Trachyspermum ammi (L.) Sprague (Apiaceae)

open access: yesCaryologia, 2021
Unreduced gametes are the key source for the natural polyploidization in plants, but process of its formation is very low in nature. Meiotic mutants are second source for the formation of 2n pollen.
harshita dwivedi
doaj  

Challenges and prospects of endosperm balance number in potato (Solanum tuberosum) improvement

open access: yesThe Indian Journal of Agricultural Sciences, 2014
Endosperm Balance Number (EBN) is a genome-specific ploidy, which is not necessarily equivalent to the chromosome ploidy. The EBN is the ‘effective ploidy’ that determines crossability in Solanum species.
JAI GOPAL
doaj   +1 more source

Home - About - Disclaimer - Privacy