Embryo rescue

Presently marker linked to resistance for Dagger nematode and pierce disease at university of California in the breeding programs are routinely used for grapevine rootstock improvement. Genome sequencing has unveiled the mystery about various genes, the phylogenetic relationship and evolution history of sequenced fruit crop.

11p cothumenhmong9 18-01-2021 10 2   Download

Embryo rescue is an in vitro technique that has been used to save the hybrid products of fertilization when they might otherwise degenerate. Embryo culture applied to practical problems is a tissue culture technique that has proven to be of greatest value to breeders. One of the main uses of this technique is to produce interspecific and intergeneric hybrids. Post-zygotic barriers such as endosperm abortion and embryo degeneration leading to low fertility have been overcome through the use of embryo culture and several hybrids have been developed in horticultural crops.

9p nguaconbaynhay5 11-05-2020 6 1   Download

Successful interspecific hybrids were obtained when we crossed the cultivated soybean with wild annual Glycine soja. Although the success rate was low, whereas, the success rate was zero in case of wild perennial G. tomentella. Probably there is need to improve our crossability skills. Alternately, embryo rescue technique may be employed to recover the hybrids between cultivated soybean and wild perennial species. The hybridity between cultivated and wild annual soybean (Glycine soja) hybrids was confirmed at morphological and molecular level.

13p cothumenhmong3 22-02-2020 13 0   Download

The present investigation entitled as “Effect of hardening media and different cross combinations on physiological parameters of in vitro cultured citrus plantlets” was carried out in the Division of Fruits and Horticultural Technology, ICAR-IARI, New Delhi. The experiment consisted of embryo rescued plantlets from cross pollination (control pollination) and open pollination (uncontrolled pollination) and two hardening media HM1(Coco peat: Perlite: Vermiculite, 1:1:1) and HM2 (Coco peat: Perlite: Vermiculite, 2:1:1).

6p cothumenhmong1 08-12-2019 8 1   Download

Berseem, a nitrogen-fixing, annual, multicut forage crop cultivated around 2 million hectares areas of northern, central and eastern parts of India. Berseem has variability for pollination behavior however variation for morphological and agronomic traits are scare, perhaps, because of initially introduction of crop with narrow genetic base. Genetic variability have been fortified through introduction of exotic materials, intra-interspecific hybridization, induction of polyploidy and mutation. ICAR-Indian Grassland and Fodder Research Institute maintain >900 accessions of Trifolium spp.

9p nguaconbaynhay1 04-12-2019 22 0   Download

Application of chemical mutagens as important factors is very practical for successful haploidization techniques in Cucurbitaceae through pollen grain deactivation and then immature embryo rescue.

11p danhdanh11 09-01-2019 30 2   Download

In vivo induction of parthenogenesis using an irradiated pollen technique provides successful results in melon and accelerates breeding by shortening the time for obtaining 100% homozygous lines. Gamma rays (cobalt-60) are usually used for the pollen irradiation, although it is difficult to find a suitable source for irradiation.

8p danhdanh11 09-01-2019 20 2   Download

This is the first report of successful regeneration of haploid lines in iris (Iris pseudacorus) developed by in situ parthenogenesis followed by embryo rescue. Native genotypes of I. pseudacorus (2n = 38) were prepared as female parents and I. spuria was set as the males.

5p danhdanh11 11-01-2019 23 2   Download

The tissue-specific transcription factorsHNF1aandHNF1b are closely related homeodomain proteins conserved in vertebrate evolution. Heterozygous mutations in human HNF1b 1 but not inHNF1agenes are associated with kidney malformations. Overexpression of HNF1b in Xenopus embryos leads to defective pronephros development, while HNF1ahas no effect. We have defined the regions respon-sible for this functional difference between HNF1band HNF1ain transfected HeLa cells as well as in injected Xenopusembryos. ...

14p awards 05-04-2013 41 2   Download

By playing a role in the near-annihilation of a species, Theodore Roosevelt, the president of the United States at the turn of the twentieth century, unwittingly laid the groundwork for the most dramatic triumph yet in the use of artificial insemination (AI) to rescue a species from extinction. In the early 1900s, waves of immigrants from Europe settled in the American Midwest. As humans transformed the land, they declared war on a perceived pest: the prairie dog.

427p coeus75 29-01-2013 65 9   Download