Results 71 to 80 of about 5,168 (221)

A Cytological Analysis of a Naturally Occurring Helianthus Hybrid [PDF]

, 1957
Author Institution: Department of Botany, Ohio Wesleyan University, Delaware ...
Long, Robert W.
core  

Starmaya: The first arabica F1 coffee hybrid produced using genetic male sterility [PDF]

, 2019
In the present paper, we evaluated the implementation of a seed production system based on the exploitation of male sterility on coffee. We studied specifically the combination between CIR-SM01 and Marsellesa® (a Sarchimor line), which provides a hybrid ...
Alpizar, Edgardo, Bertrand, Benoît, Bordeaux, Mélanie, Breitler, Jean-Christophe, Courtel, Philippe, Dechamp, Eveline, Etienne, Hervé, Georget, Frederic, Hidalgo, Martin, Marie, Lison, Marraccini, Pierre, Poncon, Clément   +11 more
core   +1 more source

Unravelling the unusual: chromosome elimination, nondisjunction and extra pollen mitosis characterize the B chromosome in wild sorghum

New Phytologist, Volume 243, Issue 5, Page 1840-1854, September 2024.
Summary The B chromosomes exhibit diverse behaviour compared with conventional genetic models. The capacity of the B chromosome either to accumulate or to be eliminated in a tissue‐specific manner is dependent on biological processes related to aberrant cell division(s), but here yet remains compatible with normal development.
Miroslava Karafiátová, Tereza Bojdová, Magdaléna Stejskalová, Natália Harnádková, Vinod Kumar, Andreas Houben, Jianyong Chen, Alžběta Doležalová, David Honys, Jan Bartoš   +9 more
wiley   +1 more source

Floral morphology and anther development in diandrous orchid Paphiopedilum purpuratum with their taxonomic implications

Guangxi Zhiwu
The taxonomy of Paphiopedilum Pfitz. has been disputed and needs more data for clarification. Floral morphology and anther development in P. purpuratum were observed using microscope and paraffin section. The results were as follows: (1) It was supported
ZHU Yong, HUANG Jialin, TAO Kaifeng, WANG Yuecheng, ZHANG Jin, LI Lu   +5 more
doaj   +1 more source

Aggregations of organelles in meiotic cells of higher plants

Acta Societatis Botanicorum Poloniae, 2014
During early prophase I in microsporocytes and sporocytes of various plants all mitochondria and plastids aggregate in a group, where some plastids seem to undergo division. This group desintegrates by middle prophase I.
Bohdan Rodkiewicz, Ewa Duda
doaj   +1 more source

OsALKBH9‐mediated m6A demethylation regulates tapetal PCD and pollen exine accumulation in rice

Plant Biotechnology Journal, Volume 22, Issue 9, Page 2410-2423, September 2024.
Summary The N6‐methyladenosine (m6A) mRNA modification is crucial for plant development and stress responses. In rice, the male sterility resulting from the deficiency of OsFIP37, a core component of m6A methyltransferase complex, emphasizes the significant role of m6A in male fertility. m6A is reversible and can be removed by m6A demethylases. However,
Jun Tang, Dekun Lei, Junbo Yang, Shuyan Chen, Xueping Wang, Xiaoxin Huang, Shasha Zhang, Zhihe Cai, Shanshan Zhu, Jianmin Wan, Guifang Jia   +10 more
wiley   +1 more source

Variations in Quercus sp. Pollen Seasons (1996--2011) in Poznań, Poland, in Relation to Meteorological Parameters [PDF]

, 2014
The aim of this study is to supply detailed information about oak (Quercus sp.) pollen seasons in Pozna\', Poland, based on a 16-year aerobiological data series (1996--2011).
Grewling, Ł., Jackowiak, B., Smith, Matt   +2 more
core   +1 more source

International Biological Flora: Ceratonia siliqua

Journal of Ecology, Volume 112, Issue 8, Page 1885-1922, August 2024.
The carob tree (Ceratonia siliqua) has a long traditional history in Mediterranean cultures providing food for humans and domestic animals. Its remarkable tolerance of drought, salt and fire, with an ability to thrive in poor, dry soils, makes it ideal for a warming Mediterranean climate.
Peter A. Thomas, Xavier Garcia‐Martí, Tarek A. Mukassabi, Joan Tous   +3 more
wiley   +1 more source

Molecular-cytogenetic analysis of triticale and wheat lines with introgressions of the tribe Triticeae species genetic material

Вавиловский журнал генетики и селекции, 2015
There are a number of problems in selection of cultivated cereals associated with the requirements to create forms with resistance to diseases, pests and unfavorable environmental conditions.
O. A. Orlovskaya, I. N. Leonova, I. G. Adonina, E. A. Salina, L. V. Khotyleva, V. K. Shumny   +5 more
doaj   +1 more source

Meiotic progression in arabidopsis is governed by complex regulatory interactions between SMG7, TDM1, and the meiosis I-specific cyclin TAM [PDF]

, 2010
International audienceMeiosis is a modified cell division that produces four haploid nuclei from a single diploid cell in two rounds of chromosome segregation.
Bulankova, Petra, Nowack, Moritz, Riehs-Kearnan, Nina, Riha, Karel, Schnittger, Arp   +4 more
core   +5 more sources