ICAR Research Data Repository for Knowledge Management
Genetic analysis of kernel traits in bread wheat (T. aestivum L.)
KrishiKosh
View Archive Info| Field | Value | |
| Title |
Genetic analysis of kernel traits in bread wheat (T. aestivum L.)
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| Creator |
Mala Kumari
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| Contributor |
Subhadra Singh
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| Subject |
Kernel traits, Wheat, Heritability, RIL population, Path coefficient, Genetic analysis
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| Description |
Genetic analysis of kernel traits in bread wheat (T. aestivum L.) was investigated on 103 RILs derived for F2 of cross between HUW -510 × WH-730 of bread wheat. The observation on kernel traits: length (LEN), width (WID), thickness (THI), crease depth (DEP), texture hardiness (TEX), 1000-kernel weight (TKW), test weight (TW), Area (AREA), volume (VOL), specific volume (SPVOL), density (DEN), factor farm density (FFD), length-width (LEN/WID) ratio and kernel colour was observed on 42000 single kernel samples taken from post harvest of normal sown and late sown experiments conducted over two years. Highly significant genotypic differences were present for all traits. Both genotypic and phenotypic coefficients of variations were high for TKW, TEX and DEP and low for LEN, WID and THI. Heritability and genetic advance were high for TEX and TKW. A close association was observed between genotypic and phenotypic correlation coefficient between pairs of kernel traits. TKW and AREA were in general associated positively with all the traits. Simple correlation coefficient was stable over the environment. Using path coefficient technique, the gross correlation of various kernel variables with TKW (dependent) revealed that VOL, FFD and WID were most significant kernel traits contributing high direct and indirect effects. Beside these variables, AREA was also found important kernel trait in late sown experiment. Physical quality of kernel traits may be improved by giving optimum weightage to these variables. Trangressive segregants were observed for all kernel traits implying gene dispersion between parents. Five classes namely, amber, light red, medium red, red and dark red of grain colour was observed in RIL population. The extreme class had low frequency. |
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| Date |
2016-09-10T09:07:06Z
2016-09-10T09:07:06Z 2013 |
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| Type |
Thesis
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| Identifier |
http://krishikosh.egranth.ac.in/handle/1/76339
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| Language |
en
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| Format |
application/pdf
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| Publisher |
CCSHAU
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