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Elucidation of diversity among F1 hybrids to examine heterosis and gene inheritance for horticultural traits and TolCV resistance in tomato
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| Title |
Elucidation of diversity among F1 hybrids to examine heterosis and gene inheritance for horticultural traits and TolCV resistance in tomato
Not Available |
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| Creator |
Singh Ramesh, N. Rai, Amaresh Kumar Singh, Prashant Kumar, T Chaubey, B Singh and SN Singh
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| Subject |
tomato; genetic diversity; simple sequence repeats; heterobeltiosis; Mendelian ratio; ToLCV resistance.
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| Description |
Not Available
Genetic diversity during prebreeding or postbreeding programme, is the key pillar to characterize the valuable traits and gene of interest.Whereas, superior or inferior heterotic performance ofF1 depend on the diverse nature of their pedigree. Therefore, the aim of this study was to see the diversity between the interspecific crosses and effect of heterosis, and inheritance for the morphological traits and ToLCV resistance. All the 24 F1 interspecific crosses were classified into four clusters on the basis of morphological traits as well as simple sequence repeat (SSR) markers. Among the F1 hybrids, 23 were grouped into clusters II, III and IV with different phylogeny, while PBC×EC 521080 was individual with cluster I. On the basis of visual observation of fruit colour, deep red and green colours in the crosses of S. pimpinellifolium (EC 521080) and S. habrochaites (EC 520061) exhibited dominant effects. In context of heterosis breeding, the crosses which were made using Solanum pimpinellifolium (EC 521080), S. chmielewskii (EC 520049) and S.cerasiforme (EC 528372) were better for yield capacity and the crosses of S. habrochaites (EC 520061) exhibited low and negative heterosis for ToLCV resistance. The F2 progenies were segregated in various Mendelian ratio as follows 3:1, 1:2:1, 1:3, 13:3, 15:1,12:3:1 and 9:6:1 for ToLCV disease reaction of incidence, plant growth habit and fruit colour appearance, respectively. Therefore, these interspecific crosses can be utilized for developing high yield, impressive fruit colour combiners and resistant hybrids/varieties of tomato. Not Available |
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| Date |
2018-11-24T08:58:13Z
2018-11-24T08:58:13Z 2017-01-01 |
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| Type |
Research Paper
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| Identifier |
(1)
Not Available http://krishi.icar.gov.in/jspui/handle/123456789/13122 |
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| Language |
English
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| Relation |
Not Available;
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| Publisher |
Indian Academy of Sciences
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