F2 generation

Bài viết Phân tích biến động di truyền và tương quan giữa các tính trạng nông học của các quần thể lúa Indica thế hệ F2 có nguồn gốc từ phép lai MAGIC (multi parent advanced generation intercross) phân tích các tham số di truyền và mối tương quan giữa một số tính trạng nông học của 16 quần thể lúa indica thế hệ F2 có nguồn gốc từ phép lai nhiều bố mẹ (MAGIC).

9p vidoctorstrange 06-05-2023 9 2   Download

Early life exposure to adverse environments affects cardiovascular and metabolic systems in the offspring. These programmed effects are transmissible to a second generation through both male and female lines, suggesting germline transmission. We have previously shown that prenatal overexposure to the synthetic glucocorticoid dexamethasone (Dex) in rats reduces birth weight in the first generation (F1), a phenotype which is transmitted to a second generation (F2), particularly through the male line.

15p vimichaelfaraday 25-03-2022 15 1   Download

The six populations (parents, F1, backcrosses and F2) of the two wheat crosses, Gemmeiza 9 · IL1 (C1) and Sids 1 · IL2 (C2) were grown under normal irrigation (N) and drought stress (D) at the farm of Faculty of Agriculture, Sohag University, Egypt to study the genetic background of drought stress tolerance. Genetic variation was found for No.

8p schindler 30-12-2021 12 0   Download

It is well known that development of prostate cancer (PC) can be attributed to somatic mutations of the genome, acquired within proto-oncogenes or tumor-suppressor genes. What is less well understood is how germline variation contributes to disease aggressiveness in PC patients. To map germline modifiers of aggressive neuroendocrine PC, we generated a genetically diverse F2 intercross population using the transgenic TRAMP mouse model and the wild-derived WSB/EiJ (WSB) strain.

16p vibeauty 23-10-2021 6 0   Download

The generation mean analysis involving six generations (P1, P2, F1, F2, B1 and B2) was carried out to study the nature and magnitude of gene effects for seventeen characters in okra. The study was conducted at Departmental Farm of Department of Agricultural Botany, College of Agriculture, VNMKV Parbhani during Kharif-17 season.

11p trinhthamhodang11 27-04-2021 16 1   Download

A study of correlation and path analysis was undertaken in two F2 populations of Tomato in two promising hybrids Arka Samrat and Arka Rakshak for fruit yield and its component traits. This study helps in identifying the characters which mainly contributing to yield per plant.

10p cothumenhmong9 18-01-2021 12 2   Download

The success of most crop improvement programs depends on variability and heritability of desirable traits. An investigation was carried out during kharif 2016 at Botanical garden, University of Agricultural Sciences, Dharwad, India to assess the extent of variability generated by hybridization and to estimate the heritability and genetic advance as percent of mean for seed cotton yield and its component traits in F2 generation of cross QTP 16 × ASa 151. The segregating population thus obtained was evaluated for eight quantitative traits.

6p caygaocaolon8 07-11-2020 15 2   Download

The experimental material consisted of six generations (P1, P2, F1, F2, BC1 and BC2) obtained from two crosses of rice using three parents laid out in a randomized block design with two replications to study the generation mean analysis for ten characters viz., days to flowering, plant height, number of tillers per plant, number of productive tillers per plant, panicle length, number of filled grains per panicle, total number of grains per panicle, 1000 grain weight and single plant yield.

9p caygaocaolon8 07-11-2020 9 2   Download

The present investigation was carried out to study the correlation and path analysis in two crosses namely ADT 43 x FR13A (Cross 1) and Improved White Ponni x FR13A (Cross 2) were evaluated under low land submerged field condition at Agricultural College and Research Institute, Madurai, Tamil Nadu, India during 2015 for the study of character association between yield and yield components under submerged condition where the water depth was more than 30 cm at least for two weeks at the vegetative stage of crop.

11p caygaocaolon8 07-11-2020 11 1   Download

The aim of this study was to determine selection gain and selection intensity for high yield i.e. to estimate the genetic potential transferred from F2 generation to F3 generation by using a total of 200 progenies were studied in F3 generation during kharif, 2014.

9p nguathienthan8 20-10-2020 12 2   Download

Generation mean analysis study in cowpea was undertaken to estimate the gene action operating in the inheritance of yield and its components. Six basic generations viz., P1, P2, F1, F2, BC1 and BC2 of five crosses, namely Pant lobia-1 x BRDCP-11 (cross I), Pant lobia-2 x GC-3 (cross II), Waghi local x W-203-1 (cross III), KM-5 x GC-3 (cross IV) and GC-3 x CDP-107 (cross V) were studied. Scaling test was applied to test the adequacy of additive-dominance model for the traits under investigation.

10p chauchaungayxua8 03-10-2020 15 2   Download

An experiment was conducted on genetic variability, heritability and genetic advance in wheat population including 48 F1’s + 48 F2’s + 16 parents in RBD during Rabi 2014-15. Analysis of variance for the design of experiments revealed that mean squares due to treatments were highly significant for all the ten characters studied, while mean squares due to replications were non-significant in both F1 and F2 generations.

5p chauchaungayxua8 03-10-2020 17 2   Download

The present investigation was conducted at College Farm, N. M. College of Agriculture, Navsari Agricultural University, Navsari during kharif - 2016 with a view to study the heterosis and inbreeding depression in five crosses (each having P1, P2, F1, F2, BC1 and BC2 generations) of cow pea through a compact family block design with three replications.

9p trinhthamhodang1215 23-09-2020 9 2   Download

Earliness, an adaptive trait and factor of variation for agronomic characters, is a major trait in plant breeding. In present investigation, the experimental material comprised of P1, P2, F1, F2 and F2:3 generations of wheat crossDL-788-2 X GW-322 for earliness related traits with objective of linkage and QTL mapping in bread wheat. Out of 200 SSR markers screened for parental polymorphism for earliness related traits, only 11% of SSR markers showed good polymorphism between two parental lines.

11p trinhthamhodang1215 23-09-2020 9 1   Download

The present investigation was carried out during kharif 2017-2018, at Main Rice Research Centre farm, Navsari Agricultural University, Navsari. The experimental material for present investigation comprised of Six generations viz., P1, P2, F1, F2, BC1 and BC2 of following four crosses were involved eight diversified cultivars of rice (Oryza sativa L.) were used to study the genetic analysis of quantitative and qualitative traits.

10p caygaocaolon7 18-09-2020 11 0   Download

The objective this study was to effect of gene effects for some agronomical traits (plant height, number of effective tillers per plant, number of spikelet per spike, number of seeds per plant, seed yield and biological yield) of Cross I CG1608 (HI 1544 x GW 2013-513) and Cross II CG 1639 (RAJ 4270 x GW 366) The experimental material comprising of six generations ( P1 , P2 , F1 , F2 , BC1 and BC2 ) of wheat crosses was planted during rabi 2018-19 in randomized block design of two replication under irrigated condition at All India Co-ordinated Wheat and Barley Improvement Project at B.T.

10p nguaconbaynhay7 15-08-2020 15 1   Download

A field experiment was conducted to study the mean performance variations for nitrogen use efficiency and yield related traits in nine crosses of rice genotypes. From each cross six generations i.e., P1, P2, F1, F2, B1 and B2 were generated and were analyzed in an experimental trial conducted in rabi, 2012-13.

10p caygaocaolon6 30-07-2020 11 2   Download

The inheritance pattern of flower colour in underutilized tuberous legume crop yam bean was studies by utilizing a white flower colour line (YBWF1) and two purple flower colour lines (RM-1 and L No-3). The F1 and F2 population along with parental lines were evaluated to study the inheritance pattern of the flower colour. All the F1 hybrids showed purple colour in both the crosses and in the F2 segregation generation, the observed distribution of the flower colour fitted the expected Mendalian ratio of 3 (Purple flower colour):1 (white flower colour).

4p caygaocaolon6 30-07-2020 13 2   Download

Studies on the genetic basis for resistance to jassid (Amrasca biguttula biguttula) was done in F2 segregating generation of one promising cross of interspecific cotton (Gossypium hirsutum L. X Gossypium barbadense L.) in the year 2015-16. The cross FQT-37 X SB-YF-425 segregated in the ratio of 13:3 for susceptibility and resistant. In the case of resistant type, all the plants were in grade II, implying moderate resistance. This gene action is called as inhibitory gene action.

4p angicungduoc6 20-07-2020 10 1   Download

The present investigation on mean performance and genetic parameters estimation was conducted on genetically dissimilar ten parents and their F2’s.

8p angicungduoc6 20-07-2020 8 1   Download