Results 61 to 70 of about 343,749 (184)

Meiotic behavior of wild Caricaceae species potentially suitable for papaya improvement

Crop Breeding and Applied Biotechnology, 2012
The purpose of this study was to evaluate the meiotic behavior and determine the meiotic index and pollen viability of representative plants of the wild species V. goudotiana, V. quercifolia and J. spinosa. Meiotic analysis confirmed that the species are
Emanuelli Narducci da Silva, Monique Freitas Neto, Telma N. S. Pereira, Messias G. Pereira   +3 more
doaj  

Effects of endogamy on microsporogenesis in popcorn

Crop Breeding and Applied Biotechnology, 2007
Inbred lines are necessary for the development of popcorn hybrids. Genes for several traits, among them those related to the meiotic process, approach homozygosis during inbreeding.
Maria Suely Pagliarini, Maria Fernanda Piffer Tomasi Baldez da Silva, Eraldo Ferreira Lopes, Carlos Alberto Scapim   +3 more
doaj  

Unraveling the meiotic puzzle: chromosome count, meiotic behaviour, and reproductive challenges in Phlomis cashmeriana Royle ex Benth. from the Kashmir Himalaya

Frontiers in Conservation Science
Meiotic stability is crucial for maintaining reproductive success and genetic diversity in plants, especially in montane regions like the Himalaya, where fluctuating environmental conditions can disrupt normal chromosome behavior.
Roof Ul Qadir, Hanan Javid, Aijaz Hassan Ganie, Bilal A. Wani, Irshad A. Nawchoo, Junaid A. Magray   +5 more
doaj   +1 more source

Meiotic abnormalities in metaphase I human spermatocytes from infertile males: frequencies, chromosomes involved, and the relationships with polymorphic karyotype and seminal parameters

Asian Journal of Andrology, 2014
The aim of this study was to look in depth at the relationship between meiotic anomalies and male infertility, such as the determination of the chromosomes involved or the correlation with patient features.
Zaida Sarrate, Francesca Vidal, Joan Blanco   +2 more
doaj   +1 more source

The rim15-Endosulfine-PP2ACdc55 signalling module regulates entry into gametogenesis and quiescence via distinct mechanisms in budding yeast [PDF]

, 2013
Quiescence and gametogenesis represent two distinct survival strategies in response to nutrient starvation in budding yeast. Precisely how environmental signals are sensed by yeast cells to trigger quiescence and gametogenesis is not fully understood.
Sourav Sarkar, Dalgaard Jacob Z., Prakash Arumugam, Arumugam P., Sarkar, Sourav, Jonathan B. A. Millar, Sarkar S., Arumugam Prakash, Millar, Jonathan B. A., Jacob Z. Dalgaard (303312), Jacob Z. Dalgaard, Arumugam, Prakash, Sourav Sarkar (430861), Millar Jonathan B. A., Jonathan B. A. Millar (430863), Sarkar Sourav, Millar J.B.A., Jonathan B A Millar, Dalgaard, Jacob Z., Jacob Z Dalgaard, Dalgaard J.Z., Prakash Arumugam (303310)   +21 more
core   +1 more source

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

Caryologia, 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  

Homologous recombination, sister chromatid cohesion, and chromosome condensation in mammalian meiosis [PDF]

, 2002
In the life cycle of sexually reproducing eukaryotes, haploid and diploid generations of cells alternate. Two types of cell division occur in such a life cycle: mitosis and meiosis. They are compared in chapter 1 .
Eijpe, M.
core  

Meiosis in elephant grass (Pennisetum purpureum), pearl millet (Pennisetum glaucum) (Poaceae, Poales) and their interspecific hybrids

Genetics and Molecular Biology, 2006
The cultivated and sexually compatible species Pennisetum purpureum (elephant grass, 2n = 4x = 28) and Pennisetum glaucum (pearl millet, 2n = 2x = 14) can undergo hybridization which favors the amplification of their genetic background and the ...
Vânia Helena Techio, Lisete Chamma Davide, Antônio Vander Pereira   +2 more
doaj   +1 more source

Chromosome segregation and recombination in human meiosis: Clinical applications and insight into disjunction errors [PDF]

, 2015
Chromosome copy number errors (or aneuploidy) of gametes and embryos occurs in humans more frequently than in any other studied species, with a spectrum of manifestations from implantation failure to affected live births.
Ottolini, Christian Simon, The Bridge Centre Ltd, UK   +1 more
core  

Cytogenetic analysis of hybrids derived from wheat and Tritipyrum using conventional staining and genomic in situ hybridization

Biologia Plantarum, 2010
The new salt tolerant cereal, Tritipyrum (2n=6x=42, AABBEbEb) offers potential to introduce desirable characters for wheat improvements. This study was aimed to generate a segregating population from Iranian local wheat cultivars (2n=6x=42, AABBDD) and ...
G. Mirzaghaderi, G. Karimzadeh, H. S. Hassani, M. Jalali-Javaran, A. Baghizadeh   +4 more
doaj   +1 more source