Results 131 to 140 of about 35,135 (271)

New Considerations on Meiosis, Affinity and Genomic Constitution in Aneuploids and Interploid Hybrids of Urochloa P. Beauv. (Brachiaria)

Plant Breeding, EarlyView.
ABSTRACT The combination of polyploidy, apomixis and the formation of aneuploid and interploid hybrids makes the genus Urochloa an interesting system for investigating meiotic stability and genome behaviour in grasses. In this study, routine meiotic analysis and genomic in situ hybridization (GISH) were used to (i) evaluate meiosis in three hybrids of ...
Isabella Campos Moraes, Pedro Henrique Mendes Carvalho, Fausto Souza Sobrinho, Vânia Helena Techio   +3 more
wiley   +1 more source

nTChap: an accurate method for polyploid haplotype reconstruction

Haplotypes of polyploid organisms provide important insights into polyploid evolution and advanced breeding strategies. Significant challenges remain in polyploid haplotype phasing, including the great number of haplotype copies and the presence of ...
Li, Guojun, Junhai Qi, Guojun Li, Yun Gao, Ting Yu, Gao, Yun, Qi, Junhai, Yu, Ting   +7 more
core   +1 more source

Improved Autotetraploid Induction Methods in Four Diploid Wild Peanut Species: Arachis duranensis, A. stenosperma, A. magna, and A. batizocoi

Plant Breeding, EarlyView.
ABSTRACT Peanut (Arachis hypogaea L., 2n = 4x = 40, AABB) is an important legume crop worldwide. Wild peanuts (Arachis spp.) represent a valuable secondary gene pool with diverse disease resistances. However, most wild peanut species are diploid (2n = 2x = 20) and this ploidy barrier is a major obstacle to hybridization and gene introgression.
Chia‐Hung Shih, Jose M. Falconi Villalobos, Ryan J. Andres, Jeffrey C. Dunne, Hsuan Chen   +4 more
wiley   +1 more source

Cultivar‐Specific Production of Unreduced Pollen in the Ornamental Bigleaf Hydrangea (Hydrangea macrophylla ssp. macrophylla)

Plant Breeding, EarlyView.
ABSTRACT Unreduced gametes naturally promote polyploidization and are valuable in breeding polyploid offspring. Bigleaf hydrangea (Hydrangea macrophylla ssp. macrophylla), a major ornamental crop, has shown spontaneous polyploidization rates ranging from 0% to 94% in previous crosses.
Conny Tränkner, Anke Müller
wiley   +1 more source

Characterization of genome repeat sequence composition and chromosomal distribution in Leymus secalinus

Xibei zhiwu xuebao
[Objective] Leymus Hochst. stands as a crucial genetic resource for the genetic improvement and breeding of cereal crops. However, as allopolyploid plants, their genome origin remains unclear.
CHEN Jie, LI Yuan, YANG Ying, LIU Bo, DOU Quanwen   +4 more
doaj   +1 more source

Creating new interspecific hybrid and polyploid crops

, 2015
Agricultural selection of desirable traits in domesticated plant and animal species mimics natural evolutionary selection for ability of species to survive, thrive, and reproduce in the wild.
Mason, Annaliese S., Batley, Jacqueline
core   +1 more source

Stress‐specific metabolic and physiological responses to drought and waterlogging in Allium cepa L. and Allium × cornutum Clementi ex Vis.

Plant Biology, EarlyView.
Drought and waterlogging induce distinct species‐specific metabolic, physiological and transcriptional responses in Allium cepa and Allium × cornutum. Abstract Increasing variability in water availability, caused by changing climatic conditions, is a major constraint for onion production.
Ž. Fredotović, B. Soldo, B. Urlić, K. Radovani, E. Vuko, J. Puizina   +5 more
wiley   +1 more source

The Response and Evaluation of Morphology, Physiology, and Biochemistry Traits in Triploid Passiflora edulis Sims ‘Mantianxing’ to Drought Stress

Plants
As one of the most influential environmental factors, drought stress greatly impacts the development and production of plants. Triploid-induced Passiflora edulis Sims ‘Mantianxing’ is an important new cultivar for multi-resistance variety selective ...
Xin Su, Zhenxin Yang, Chiyu Zhou, Shili Geng, Shi Chen, Nianhui Cai, Junrong Tang, Lin Chen, Yulan Xu   +8 more
doaj   +1 more source

Hybrid origins of polyploid cultivated potatoes

, 2010
Hybrid origins of polyploid cultivated ...

core  

Meiosis and Its Deviations in Polyploid Plants

, 2013
Meiosis is a fundamental process in all sexual organisms that ensures fertility and genome stability and creates genetic diversity. For each of these outcomes, the exclusive formation of crossovers between homologous chromosomes is needed.
Grandont, Laurie, Jenczewski, Eric, Lloyd, Andrew   +2 more
core   +1 more source