Results 61 to 70 of about 2,973 (193)

Sperm fertilization capacity of Caspian salmon, Salmo trutta caspius under ultraviolet irradiation [PDF]

open access: yes, 2014
The optimum dose of ultraviolet (UV) irradiation to produce gynogenetic Caspian salmon, Salmo trutta caspius, with emphasis on the "Hertwig effect" and photoreactivation (PR) were investigated. The sperm of Caspian salmon was irradiated with UV at 2010 ±
Dorafshan, S.   +3 more
core   +1 more source

Gynogenesis caused by ultraviolet irradiation of salmonid sperm [PDF]

open access: yesJournal of Experimental Zoology, 1982
AbstractGynogenetic rainbow trout lines can be produced easily with the simple UV sperm irradiation technique detailed in this study. The dose effect on embryonic survival rate is called a pseudo “Hertwig effect” because of major differences with results of gamma irradiation: Some mixing of various karyotypes (from diploid to haploid number) were ...
openaire   +5 more sources

An improved protocol for carrot haploid and doubled haploid plant production using induced parthenogenesis and ovule excision in vitro [PDF]

open access: yes, 2014
In this work, we describe an improved protocol for induced parthenogenesis and ovule culture of carrot (Daucus carota L.). The effects of pollination with parsley pollen and/or 2,4-dichlorophenoxyacetic acid (2,4-D) treatment on the stimulation of ...
Adela Adamus   +2 more
core   +1 more source

Shoots formation from gynosinesis Cucumis sativus l.

open access: yesHo Chi Minh City Open University Journal of Science - Engineering and Technology, 2018
Haploid plants achieve through androgenesis or gynogenesis. In gynogenesis method, the ovary or ovule are used as explants induct haploid plants. Female flower one day before flowering of Cucumis sativus L. are collected.
Le Thi Kim Ngoc, Nguyen Tran Dong Phuong
doaj   +1 more source

Induced Gynogenesis in the Indian Major Carp, Cirrhinus mrigala (Ham.) [PDF]

open access: yes, 1988
Artificial production of gynogenetic Cirrhinus mrigala (mrigal ) is reported for the first time. Ultraviolet irradiated Cyprinus carpio (common carp) milt was used for activating mrigal eggs.
Jana, R K, John, George, Reddy, P V G K
core  

Mechanical shock during egg de-adhesion and post-ovulatory ageing contribute to spontaneous autopolyploidy in white sturgeon culture (Acipenser transmontanus) [PDF]

open access: yes, 2020
Spontaneous autopolyploidy, a 1.5x increase in genome size resulting from second polar body retention after fertilization, has been documented in cultured sturgeons, with the proportion of spontaneous autopolyploid progeny ranging widely among maternal ...
Conte, FS   +6 more
core  

Manipulation of chromosomes in fish: review of various techniques and their implications in aquaculture [PDF]

open access: yes, 1998
Human ingenuity has made it possible to advent the chromosome manipulation techniques to produce individuals with differing genomic status in a number of fish using various causal agents such as physical shocks (temperature or hydrostatic pressure ...
Hussain, M.G.
core  

Efecto de la colchicina y del amiprofos-metil en la producción in vitro de plantas dihaploides de cebolla y determinación de la correlación entre el nivel de ploidía y tamaño de los estomas [PDF]

open access: yes, 2013
Doubled haploid onion (Allium cepa L.) plants allow the production of completely homozygous lines for a later production of hybrids. The haploid plants are normally produced using in vitro gynogenesis.
Bohanec, Borut   +4 more
core  

Clonal diversity and genealogical relationships of gibel carp in four hatcheries [PDF]

open access: yes, 2008
To conserve and utilize the genetic pool of gynogenetic gibel carp (Carassius auratus gibelio), the Fangzheng and Qihe stock hatcheries have been established in China. However, little information is available on the amount of genetic variation within and
Gui, J. -F.   +2 more
core   +1 more source

Spontaneous Gynogenesis in Ide, Leuciscus Idus (L.)

open access: yesArchives of Polish Fisheries, 2008
The aim of the study was to obtain information regarding the spontaneous formation of gynogens in ide, Leuciscus idus (L.). Oocytes obtained from orfe and activated with the milt of dace, Leuciscus leuciscus (L.), were used for the study. Several control groups were established to determine the quality of gametes and the quality of the diluted semen ...
Dariusz Kucharczyk   +6 more
openaire   +1 more source

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