ICAR Research Data Repository for Knowledge Management
Studies on heterosis and combining ability in tomato (Solanum lycopersicum L.)
KrishiKosh
View Archive Info| Field | Value | |
| Title |
Studies on heterosis and combining ability in tomato (Solanum lycopersicum L.)
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| Creator |
Vilas, Chandanshive Aniket
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| Contributor |
Rana, M.K
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| Subject |
fruits, planting, crossing over, yields, vegetables, heterosis, developmental stages, hybrids, biological phenomena, acidity
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| Description |
A field experiment entitled “Studies on heterosis and combining ability in tomato (Lycopersicon esculentum L.)” with ten lines, five testers, two standard checks and their fifty cross combinations was conducted at Research Farm of the Department of Vegetable Science, CCS Haryana Agricultural University, Hisar during 2012-13 and 2013-14. The observations were recorded on eleven quantitative characters including three quality traits. The analysis of variance exhibited significant genotypic differences, showing considerable amount of genetic variability among different genotypes. The highest PCV, GCV, genetic advance (6.75%) and heritability (97.54%) for ascorbic acid content was showing further scope of selection for this trait. Among all ten lines, the line EC 620445 was found good general combiner for more number of traits studied. The lines EC 620380 showed high heterosis mean values for days to 50% fruit set and ascorbic acid followed by the line EC 620383. Among lines, the line EC 620533, EC 620534, EC 620391, BBWR-10-3-17 and BBWR-11-1 were found the promising general combiners with respect to the traits studied. Among all testers, Arka Meghali was found the most heterotic for the seven traits. Among crosses, BBWR-11-1 x Palam Pink was noticed the better general combiner for total number of fruits per plant and average fruit weight. Significant heterosis was expressed by the crosses for TSS, ascorbic acid and acidity over the standard check variety. The positive and desirable heterosis over best parent was exhibited in cross EC 620391 x Arka Vikas for high TSS and acidity and in cross Punjab Varkha Bahar-2 x Hisar Lalit and EC 620533 x Arka Meghali for ascorbic acid over standard checks. These crosses could be exploited for the development of tomato hybrids and also for selecting desirable segrigants to develop pure line varieties. The preponderance of both additive and non-additive gene actions for yield, its components and quality parameters is greatly suggested for both selection and heterosis breeding for the improvement of tomato crop. |
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| Date |
2016-01-30T12:07:33Z
2016-01-30T12:07:33Z 2015 |
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| Type |
Thesis
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| Identifier |
http://krishikosh.egranth.ac.in/handle/1/64118
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| Language |
en
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| Format |
application/pdf
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| Publisher |
CCSHAU
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