Inquisition on line x tester analysis in bread wheat ( Triticum aestivum L.)
| dc.contributor.advisor | Dr Vijay Kumar Yadav | |
| dc.contributor.author | Shivam Tiwari | |
| dc.date.accessioned | 2024-02-27T15:59:57Z | |
| dc.date.available | 2024-02-27T15:59:57Z | |
| dc.date.issued | 2024-02-23 | |
| dc.description.abstract | “Inquisition on line x tester analysis in bread wheat (Triticum aestivum L.)” was undertaken with a view to assess the material in respect to nature of gene action through genetic component analysis, combining ability analysis, heterosis, heritability, genetic advance, involving ten parents and their twentyfive F1s developed in line x tester fashion. The observations were recorded for fourteen characters namely, days to 50 % heading, days to 50% anthesis, physiological maturity, plant height (cm), number of tillers per plant, spike length (cm), number of spikelets per spike, plant biomass, grain weight per spike, number of grains per spike, number of grains per plant, 1000-grain weight (g), harvest index (%) and grain yield per plant (g). The analysis of variance showed highly significant differences among the parent for all characters. The variability for all the characters studied was highly significant in parents and F1s. Variation due to parent vs. F1 also showed highly significant difference for spike length, number of spikelets per spike, plant biomass, number of grains per “Inquisition on line x tester analysis in bread wheat (Triticum aestivum L.)” Name of Researcher Shivam Tiwari Degree M.Sc. (Ag.) G.P.B Id No. CA – 12092/2021 Name of Advisor Dr. Vijay Kumar Yadav Name of Department Genetics and Plant Breeding Year 2022-23 spike and grain yield per plant. The analysis of variance revealed very important information about amount of variability present On the basis of GCA effect and per se performance, parents namely K 68 and DBW 187were observed as good general combiners for grain yield per plant and other yield related contributing characters. On the basis of sca effect and per se performance, cross IC 574476 X DBW 187 and K 1317 X GW 322 was observed as good specific combiners for grain yield and other yield contributing characters. Cross combination IC574476 X DBW187 was also exhibited desirable heterosis for number of spikelets per spike, plant biomass, grain weight per spike, number of grains per spike, number of grains per plant, 1000 grain weight, grain yield per plant and harvest index; K1317 X GW322 was also exhibited desirable heterosis for plant biomass, harvest index and grain yield per plant; IC574476 X K68 was also exhibited desirable heterosis for six of the attributes namely, number of tillers per plant, spike length, grain weight per spike, 1000 grain weight, grain yield per plant and harvest index; K9351 X K68 was also exhibited desirable heterosis for number of tillers per plant, spike length, number of spikelets per spike, grain weight per spike, number of grain per spike, number of grains per plant, 1000 grain weight, grain yield per plant and harvest index; K9351 X DBW187 was also exhibited desirable heterosis number of tillers per plant, spike length, number of spikelets per spike, number of grain per plant, 1000 grain weight, grain yield per plant and harvest index. The high estimates of heritability were not observed in any of the characters indicating these characters largely governed by additive and non-additive genes. Moderate value was recorded for days to 50% heading, days to 50% anthesis, physiological maturity, plant biomass, grain weight per spike, number of grain per spike, number of grain per plant and grain yield per plant in F1 generation, indicating involvement of additive and non additive genes. The low heritability was observed for plant height, number of tillers per plant, spike length, number of spikelets per spike, 1000 grain weight and harvest index in F1 generation, indicating preponderance of non additive gene action. The high genetic advance recorded for number of grain weight per plant, grain yield per plant, plant biomass, number of tillers per plant, grain weight per spike, harvest index, number of grains per spike and harvest index in F1 generation, indicating these characters largely governed by additive genes. The genetic advance was medium for days to 50 % heading, days to 50% anthesis, spike length and number of spikelets per spike in F1 generation, indicating characters are largely governed by additive and non additive gene. Low genetic advance was observed for physiological maturity, 1000- grain weight and plant height in F1 generation, indicating involvement of non additive gene action for governing these characters. Key words – Line x Tester, genetic variability, Combining ability, gene action Heritability, Genetic advance, Heterosis. | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810207157 | |
| dc.language.iso | English | |
| dc.sub | Genetics and Plant Breeding | |
| dc.theme | Inquisition on line x tester analysis in bread wheat ( Triticum aestivum L.) | |
| dc.these.type | M.Sc | |
| dc.title | Inquisition on line x tester analysis in bread wheat ( Triticum aestivum L.) | |
| dc.type | Thesis |