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Dhatt, A. S.
- Variability, Heritability and Genetic Advance in Eggplant (Solanum melongena L.) during Summer and Rainy Season
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Authors
Affiliations
1 Department of Vegetable Science, Punjab Agricultural University, Ludhiana Punjab, IN
1 Department of Vegetable Science, Punjab Agricultural University, Ludhiana Punjab, IN
Source
Asian Journal of Bio Science, Vol 8, No 2 (2013), Pagination: 200-204Abstract
Sixty three genotypes of eggplant were studied to estimate variability, heritability and genetic advance at the department of Vegetable Science, Punjab Agricultural University, Punjab. The PCV and GCV were high (during both seasons) for traits like fruits per plant, fruit weight, pseudo style flowers, long style flowers, short style flowers, medium style flowers, flowers per inflorescence, fruit setting and fruit length. Heritability and genetic advance were also high for all these traits indicating the possibility of selection to improve these characters. Hence it could be concluded that improvement by direct selection in eggplant was possible for the traits like fruits per plant, fruit weight, fruit yield per plant, long style flowers, medium style flowers, seeds per fruit.Keywords
Variability, Heritability, Genetic Advance, EggplantReferences
- Behera, T.K., Singh, N. and Kalda, T.S. (1999). Genetic variability studies in eggplant in relation to shoot and fruit borer infestation. Orissa J. Hort., 27: 1-3.
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- Islam,M.S. and Uddin, M.S. (2009). Genetic variation and trait relationship in the exotic and local eggplant germplasm. Bangladesh J. Agril. Res., 34: 91-96.
- Johnson, H.W., Robinson, H.F. and Comnock, R.E. (1955). Estimates of genetic and environmental variability in soybeans. Agron. J., 47: 314-318.
- Mohanty, B.K. (2002). Variability, heritability and genetic advance studies in brinjalS o(lanum melongena L.). Indian. J. Agric. Res., 36 (4) : 290-292.
- Muniappan, S., Saravanan, K. and Ramya, B. (2010). Studies on genetic divergence and variability for certain economic characters in eggplant (Solanum melongena L.). Electron. J. Pl. Breed., 1: 462-65.
- Naik, K., Sreenivasulu, G.B., Prashanth, S.J., Jayaprakashnarayan, R.P., Nataraj, S.K. and Mulge, R. (2010). Genetic variability in eggplant (Solanum melongena L.). Internat. J. Agric. Sci., 6: 229-231.
- Patel, K.K., Sarnaik, D.A., Asati, B.S. and Tirkey, T. (2004). Studies on variability, heritability and genetic advance in brinjalS o(lanum melongena L.). Agric. Sci. Digest, 24 (4) : 256-259.
- Prasad, V.S.R. Krishan, Singh, D.P., Tomar, J.B. and Rai, M. (1999). Biological divergence in the landraces of eggplant (Solanum melongena L). Indian J.Pl. Genet. Resour., 12: 2.
- Singh, O. and Kumar, J. (2005). Variability, heritability and genetic advance in brijnal. Indian J. Hort., 62 (3) : 265-267.
- Production of Doubled Haploids in Onion: A Review
Abstract Views :249 |
PDF Views:129
Authors
A. S. Dhatt
1,
Prerna Thakur
1
Affiliations
1 Department of Vegetable Science, Punjab Agricultural University, Ludhiana -141 004, IN
1 Department of Vegetable Science, Punjab Agricultural University, Ludhiana -141 004, IN
Source
Journal of Horticultural Sciences, Vol 9, No 2 (2014), Pagination: 107-112Abstract
Onion suffers from high inbreeding depression and, as a result, inbreds that are developed lack genotypic and phenotypic uniformity. Gynogenesis has emerged as a potential strategy to address this drawback. Efforts have been made since the 1980s for identifying highly-responsive genotypes and for overall improvement of the protocol for bettering gynogenic frequency in onion. Besides improving media composition, identification of responsive explants and increasing the chromosome efficiency has remained a major area of focus over the years. This article purports to review progress made thus far in the induction of gynogenic haploids in onion, and challenges/opportunities associated with it.Keywords
Onion, Allium cepa, Gynogenesis, Haploid, Chromosome Doubling.- Effect of Seed Disinfectants on in vitro Seed Germination and Seedling Development in Eggplant
Abstract Views :169 |
PDF Views:116
Authors
Affiliations
1 Department of Vegetable Science, Punjab Agricultural University, Ludhiana-141004, IN
2 ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bengaluru – 560 089, IN
1 Department of Vegetable Science, Punjab Agricultural University, Ludhiana-141004, IN
2 ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bengaluru – 560 089, IN
Source
Journal of Horticultural Sciences, Vol 9, No 1 (2014), Pagination: 61-65Abstract
The present investigation reports effects of disinfectants on culture contamination, seed germination and seedling growth in eggplant. Mercuric chloride hampers seed germination when seeds are treated with 0.1% solution above 2 min duration and lesser durations are not helpful in controlling in vitro contamination. The highest seed germination (89.97%) was recorded with 50% commercial bleach for 20 min in the genotype BL-3, followed by BR-16 (88.53%), BR-14 (86.19%), BL-5 (86.16%) and BSR-23 (85.57%). However, least number of seeds germinated in BR-18 (10.94%), BSR-25 (13.27%) and BL-7 (18.62%) when disinfected with 75% commercial bleach for 25min. Overall results revealed that 50% commercial bleach concentration (73.76%) was better than 75% (36.85%), and 20 min duration (60.82%) was better than 25 min (49.80%) for seed disinfection. Among the varieties, BL-3 was at the top (68.85%) and BR-18 at the lowest (34.16%) edge for per cent seed germination. Seedling growth (cm) with use of commercial bleach was quite satisfactory compared to disinfection with HgCl2, where, 50% commercial bleach favored a good stand of plant lets even after 10 days, showing a healthy ischolar_main (3cm), hypocotyl (5cm) and cotyledons (1.5cm).Keywords
Seed Germination, Seedling Growth, Culture Contamination, Bleach, Mercuric Chloride, Sodium Hypochlorite.- Studies on Genetic Variability and Heritability in Bulb Onion (Allium cepa L.) in North-Western Plains of India
Abstract Views :158 |
PDF Views:120
Authors
J. S. Khosa
1,
A. S. Dhatt
1
Affiliations
1 Department of Vegetable Science, Punjab Agricultural University, Ludhiana - 141 004, IN
1 Department of Vegetable Science, Punjab Agricultural University, Ludhiana - 141 004, IN
Source
Journal of Horticultural Sciences, Vol 8, No 2 (2013), Pagination: 255-258Abstract
A study on genetic variability, heritability and genetic advance was carried out in bulb onion for 13 traits using 43 accessions. The range of variation was highest for bolting (0 to 51.30%), followed by days to maturity (110 to 155 days) and bulb weight (44 to 87.03g). Values for phenotypic coefficient of variation were higher than corresponding genotypic coefficient of variation for all the characters studied. Higher heritability estimates were obtained for plant height, leaf length, days to maturity, number of scales per bulb, polar diameter, equatorial diameter and TSS. Bolting, bulb weight, neck-to-bulb ratio and the lachrymatory factor showed moderate heritability, while, lowest values were observed for leaf girth and number of leaves per plant. Genetic advance varied from 0.06 to 21.82 for leaf girth and bolting, respectively.Keywords
Bulb Onion, Variance, PCV, GCV, Heritability, Genetic Advance.- Studies on Combining Ability for Yield and Quality Traits in Brinjal (Solanum melongena L.)
Abstract Views :190 |
PDF Views:105
Authors
Affiliations
1 Department of Vegetable Crops, Punjab Agricultural University, Ludhiana-141 004, IN
1 Department of Vegetable Crops, Punjab Agricultural University, Ludhiana-141 004, IN