Genetic Studies of Characters Contributing Yield and Quality in Wheat (Triticum aestivum L.)
| dc.contributor.advisor | V.Kerketta | |
| dc.contributor.author | Shashi Kiran Tirkey | |
| dc.date.accessioned | 2024-08-24T05:29:20Z | |
| dc.date.available | 2024-08-24T05:29:20Z | |
| dc.date.issued | 2002 | |
| dc.description.abstract | The present investigation was carried out with a set of thirty nine entries including parents and twenty eight crosses, obtained through Line x Testers mating design. Genetic parameters both for yield and quality contributing characters were studied by working out the extent of variation genotypic and phenotypic co-efficient of variation heritability estimates, genetic advance, degree of association of different yield components, heterosis percent and combining ability analysis through Line X Tester analysis proposed by Kempthorne (1957) have been done by a number of workers in wheat. The analysis of variance revealed that highly significant difference for all the character. The parents crosses, and parents vrs crosses were found to be significantly different for all the characters. The analysis of variance revealed that significant differences among genotypes indicating the sufficient variation for effective selection. The estimates of phenotypic variance were higher than that of genotype variance. The highest phenotypic variance as well as genotypic variance were observed for the character loaf volume and lowest for the character dry gluten. The highest phenotypic co- efficient of variation as well as genotypic co-efficient of variation was observed for the character wet gluten (18.67 per cent and 18.34 per cent respectively.) The character protein content ,1000 grain weight and yield per hectare had high heritability and moderate genetic advance. Moderate genetic heritability and moderate genetic advance. Moderate genetic heritability percent with lower genetic advance shown by the Character hectoliter weight. Loaf volume had higher genetic advance and moderate genetic co-efficient of variation but moderately low heritability estimates and moderately low genetic advance. The result of character association studies in the present investigation revealed that grain yield was significantly revealed that grain yield was significantly correlated with 1000 grain weight and three other Characters namely hectoliter weight, sedimentation value and protein content were also positively and significantly correlated with grain yield. The qualitative character SDS sedimentation value was highly associated with protein content wet gluten dry gluten protein content and loaf volume, and the character wet gluten was strongly associate with dry gluten protein content and loaf volume. The analysis of variance for combining ability revealed highly significant mean square estimates due to general combining ability effects. The magnitude of specific combining ability effects was higher than that of general combining ability effects for all the characters. Two best crosses namely HUW 234x HP1744 and K 9902 UP 2472 were found on the basis of mean performance , specific combining ability effect, heterosis per cent and general combining ability effect and for the qualitative character sedimentation value two crosses WH 729 x Up 2472 and BAU 48xHD2285 were found both had high specific combining ability effects and significant positive heterosis. Parents were also found to be good combiners. Beside these four combination four other crosses namely BAUW1915 xHD2285 for the character days to 75 per cent flowering and days to 75 per cent maturity. HP 1731 xNW1012 for the character hectoliter weight and 1000 grain weight BAUW 1915x1744 for the character hectoliter weight wet gluten and dry gluten and K 9902 x HP1744 for the loaf volume had exhibited significant positive specific combining ability effects high positive heterosis over mid parent and better and parent had posistive and significant general combining ability effects for various characters. | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810213668 | |
| dc.language.iso | English | |
| dc.pages | 121 | |
| dc.publisher | Birsa Agricultural University, Ranchi | |
| dc.sub | Plant Breeding | |
| dc.theme | Genetic Studies of Characters Contributing Yield and Quality in Wheat (Triticum aestivum L.) | |
| dc.these.type | Ph.D | |
| dc.title | Genetic Studies of Characters Contributing Yield and Quality in Wheat (Triticum aestivum L.) | |
| dc.type | Thesis |