Results 11 to 20 of about 25,416 (239)

Apomictic Malus plants exhibit abnormal pollen development

Frontiers in Plant Science, 2023
Apomixis is the asexual reproduction through seeds that leads to the production of genetically uniform progeny. It has become an important tool in plant breeding because it facilitates the retention of genotypes with desirable traits and allows seeds to ...
Dan-Dan Liu, Da-Ru Wang, Xuan-Yu Yang, Chang-Hui Zhao, Shao-Hua Li, Guang-Li Sha, Rui-Fen Zhang, Hong-Juan Ge, Xian-Song Tong, Chun-Xiang You   +9 more
doaj   +1 more source

Chromosome count, male meiotic behaviour and pollen fertility analysis in Agropyron thomsonii Hook.f. and Elymus nutans Griseb. (Triticeae: Poaceae) from Western Himalaya, India

Caryologia, 2020
Present cytological study records existing chromosome number diversity, their male meiotic course and pollen fertility analysis in the two wheatgrass species of tribe Triticeae Dumort. (Poaceae) from Western Himalaya, India. Agropyron thomsonii Hook.
Harminder Singh, Jaswant Singh, Puneet Kumar, Vijay Kumar Singhal, Bhupendra Singh Kholia, Lalit Mohan Tewari   +5 more
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Studia nad kariologią i rozwojem pyłku kilku odmian Medicago saliva L. Cz. I [Studies on karyology and pollen development in several varieties of Medicago sativa L. Part I]

Acta Agrobotanica, 2015
At the stage of diakinensis and metaphase of the first meiotic division, conjugating chromosomes in the form of bivalents were always observed. At the pre-meiotic stage some of .the mother pollen cells underwent degeneration (in 'Australian' var. 17% in '
K. Bijok, E. Adamkiewicz, L. Grygorczyk
doaj   +1 more source

Induced cytomictic crosstalk behaviour among micro-meiocytes of Cyamopsis tetragonoloba (L.) Taub. (cluster bean): Reasons and repercussions

Caryologia, 2020
Cytomictic behaviour of chromosomes among pollen mother cells was observed in mutagenic studies in cluster bean (Cyamopsis tetragonoloba (L.) Taub.). The study of pollen mother cells (PMC) revealed various chromosomal aberrations among which cytomixis ...
Girjesh Kumar, Shefali Singh
doaj   +1 more source

Timing of Reproductive Organs Maturity in Proterandrous Malva sylvestris L.

Notulae Scientia Biologicae, 2017
Flower development of protandrous species Malva sylvestris L. was divided into 12 stages, as revealed by applying histological and scanning electron microscope techniques.
Aslihan ÇETİNBAŞ-GENÇ, Meral ÜNAL
doaj   +1 more source

T-loop phosphorylation of Arabidopsis CDKA;1 is required for its function and can be partially substituted by an aspartate residue [PDF]

, 2007
As in other eukaryotes, progression through the cell cycle in plants is governed by cyclin-dependent kinases. Phosphorylation of a canonical Thr residue in the T-loop of the kinases is required for high enzyme activity in animals and yeast.
Dissmeyer, N., , Nowack, M., Pusch, S., Stals, H., Inzé, D., Grini, P., Schnittger, A.   +7 more
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Imaging plant germline differentiation within Arabidopsis flowers by light sheet microscopy [PDF]

, 2020
In higher plants, germline differentiation occurs during a relatively short period within developing flowers. Understanding of the mechanisms that govern germline differentiation lags behind other plant developmental processes.
Bainar, Petr, Heckmann, Stefan, Klímová, Jana, Krumnikl, Michal, Mikulková, Pavlína, Pečinková, Jana, Tomančák, Pavel, Valuchová, Soňa, Říha, Karel   +8 more
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Nucleolar behavior in pollen mother cells in the pigeonpea [PDF]

Journal of Heredity, 1987
Reports on the number of satellite chromosomes in the karyotype of Cajanus cajan are controversial, with the number varying from zero to two. Expression of nucleolar organizer chromosomes during meiosis (prophase-I, telophase-I and telophase-II) is used as an index for the number of nucleolar organizers and conclusive evidence is provided for the ...
Kumar, P S, Subrahmanyam, N C, Faris, D G   +2 more
openaire   +1 more source

The Potential Of High-Resolution BAC-FISH In Banana Breeding [PDF]

, 2009
The genetic complexity in the genus Musa has been subject of study in many breeding programs worldwide. Parthenocarpy, female sterility, polyploidy in different cultivars and limited amount of genetic and genomic information make the production of new ...
Capdeville, G., De, Eugenio Cardamone Diniz, L., Jong, J.H.S.G.M., de, Kema, G.H.J., Souza, M.T., Swennen, R., Szinay, D., Wijnker, T.G.   +7 more
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Cytomolecular identification of individual wheat-wheat chromosome arm associations in wheat-rye hybrids [PDF]

, 2013
Chromosome pairing in the meiotic metaphase I of wheatrye hybrids has been characterized by sequential genomic and fluorescent in situ hybridization allowing not only the discrimination of wheat and rye chromosomes, but also the identification of the
Badaeva ED, Badaeva ED, Bass HW, Bedbrook J, Berkman PJ, Cifuentes M, Cifuentes M, Cifuentes M, Colas I, Conley EJ, Contento A, Cuadrado A, Devos KM, Devos KM, Fedak G, Fernandez-Kalvin B, Ferrer E, Fominaya A, Gale MD, Gerlach WL, Gill BS, Hernandez P, Huang S, I. Molnár, Jauhar PP, Kamstra SA, Le HT, Logojan A, Lukaszewski AJ, M. Megyeri, M. Molnár-Láng, Martinez-Perez E, Martinez-Perez E, Miller TE, Molnár I, Molnár I, Molnár I, Molnár I, Molnár-Láng M, Molnár-Láng M, Mukai Y, Munkvold JD, Nagaki K, Naranjo T, Naranjo T, Naranjo T, Prieto P, Qi L, Riley R, Riley R, Sabot F, Schwarzacher T, Sepsi A, Sharp PJ, Szakács, Sánchez-Morán E, Tischner T   +56 more
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