Results 11 to 20 of about 20,845 (229)

Erratic Male Meiosis Resulting in 2n Pollen Grain Formation in a 4x Cytotype (2n=28) of Ranunculus laetus Wall. ex Royle

The Scientific World Journal, 2012
Two accessions were studied for male meiosis in Ranunculus laetus from the cold regions of Northwest Himalayas. One accession showed the presence of 14 bivalents at diakinesis and regular segregation of bivalents at anaphase I which lead to normal tetrad
Puneet Kumar, Vijay Kumar Singhal
doaj   +3 more sources

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

Horticultural 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, Xiaoyu Zhang, Song Sheng, Yuxun Huang, Ziqi Ye, Tongyue Zhang, Xing Liu, Zhiqiang Han   +7 more
doaj   +2 more sources

Agronomic performance of rare hybrids with female restitution in interspecific crosses of commercial cultivar of sugarcane and Saccharum spontaneum L.

Journal of Sugarcane Research, 2021
High compatibility in interspecific crosses among species of Saccharum with peculiar chromosome transmissions in the progeny is well documented. It depends upon the species combination used in the interspecific crosses.
A Suganya, R Arulmathi, P Govindaraj, A Selvi   +3 more
doaj   +7 more sources

Gibberellins as a novel mutagen for inducing 2n gametes in plants

Frontiers in Plant Science, 2023
The plant hormone gibberellin (GA) regulates many physiological processes, such as cell differentiation, cell elongation, seed germination, and the response to abiotic stress. Here, we found that injecting male flower buds with exogenous gibberellic acid
Yifan Zhao, Yifan Zhao, Yifan Zhao, Bo Kong, Bo Kong, Bo Kong, Phuong Uyen Do, Phuong Uyen Do, Phuong Uyen Do, Liang Li, Liang Li, Liang Li, Jiahua Du, Jiahua Du, Jiahua Du, Lexun Ma, Lexun Ma, Lexun Ma, Yaru Sang, Yaru Sang, Yaru Sang, Jian Wu, Jian Wu, Jian Wu, Qing Zhou, Qing Zhou, Qing Zhou, Xuetong Cheng, Xuetong Cheng, Xuetong Cheng, Xiangyang Kang, Xiangyang Kang, Xiangyang Kang, Pingdong Zhang, Pingdong Zhang, Pingdong Zhang   +35 more
doaj   +1 more source

Cytological Study of 2n Pollen Formation in Musa

Nigerian Journal of Biotechnology, 2022
Current Musa breeding strategies are complex and time consuming involving the selection of tetraploids from 3x - 2x crosses. Secondary triploids are then obtained by crossing these tetraploids with diploids. Considering the very low hybrid seed set, routine embryo rescue procedures of hybrid seeds and the long growth cycle of banana, it takes ...
Adeleke, M.T.V., Pillay, M., Okoli, B.E.
openaire   +3 more sources

Genomic introgressions from wild relatives in the wheat genome alter meiotic dynamics in inter-varietal hybrids. [PDF]

Plant J
SUMMARY The use of wild relatives to introduce original diversity in the genome of bread wheat (Triticum aestivum L.) is an interesting approach to face the challenges of sustainable agriculture and the impact of climate change on wheat production. However, the influence of these wild‐species introgressions on meiosis in inter‐varietal wheat hybrids ...
Yan L, Chéron F, Nadaud I, Hao M, Liu D, Sourdille P.   +5 more
europepmc   +2 more sources

Integrated cytological and transcriptomic analysis reveals insights into pollen fertility in newly synthetic Brassica allohexaploids

Frontiers in Plant Science, 2023
Trigenomic Brassica allohexaploids (AABBCC, 2n = 6x = 54) have great potential in oilseed breeding and genetic diversity. However, Brassica allohexaploids do not exist naturally, and the underlying mechanism regulating pollen fertility in artificially ...
Zhaoran Tian, Chengyan Ji, Chengyan Ji, Zhengqing Xie, Xinjie Shi, Xinjie Shi, Baoming Tian, Gangqiang Cao, Xiaochun Wei, Yan Yang, Fang Wei, Gongyao Shi   +11 more
doaj   +1 more source

Hybridization between wild and cultivated potato species in the Peruvian Andes and biosafety implications for deployment of GM potatoes [PDF]

, 2008
The nature and extent of past and current hybridization between cultivated potato and wild relatives in nature is of interest to crop evolutionists, taxonomists, breeders and recently to molecular biologists because of the possibilities of inverse gene ...
Celis Gamboa, B.C., Chumbiauca, S., Salas, A., Scurrah, M., Visser, R.G.F.   +4 more
core   +4 more sources

Cytogenetic studies in the Andropogon gayanus-Andropogon tectorum Complex in Southwestern Nigeria

Caryologia, 2023
The studies were carried on accessions of the Andropogon gayanus-Andropogon tectorum complex (Poaceae) in southwestern Nigeria to determine the chromosome numbers and meiotic dynamics in the species.
Funmilola Mabel Ojo, Chinyere Constance Nwokeocha, Julius Olaoye Faluyi   +2 more
doaj   +1 more source

Evidence That 2n Eggs Explain Partial Hybrids between Medicago sativa and Medicago arborea

Plants, 2022
Selected genotypes of alfalfa (Medicago sativa) produce partial hybrids in sexual crosses with Medicago arborea, as reported in Plants (2013). The hybrids contain mostly alfalfa DNA and traits, but also contain DNA and traits from M. arborea.
Edwin Bingham, John Irwin
doaj   +1 more source