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Santhi, V. P.
- Genetic Variability, Heritability and Genetic Advance in Varieties of Carrot (Daucus carota L.)
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Authors
Affiliations
1 Horticultural Research Station (T.N.A.U.), Udhagamandalam, NILGIRI (T.N.), IN
1 Horticultural Research Station (T.N.A.U.), Udhagamandalam, NILGIRI (T.N.), IN
Source
International Journal of Plant Sciences, Vol 10, No 2 (2015), Pagination: 136-141Abstract
Investigations were carried out on yield and quality of sixteen varieties and six hybrids of carrot under two seasons in Nilgiri conditions during the year 2012-2013. The varieties were evaluated for per se performance, genotypic co-efficient of variances, heritability and genetic advance. Analysis of variance revealed the existence of significant differences among the varieties studied for all the characters. Based on the per se performance and variance, the variety Tokita Kuroda improved was found to be the best with respect to growth, yield and quality attributes followed by Century Super Kuroda. In varieties high estimate of genotypic co-efficient of variation was observed for ischolar_main splitting percentage, total chlorophyll, ischolar_main carotene, leaf carotene and ischolar_main forking percentage which indicates the potential possibility on improvement of these traits by restoring simple selection programme during Kharif and summer. The characters viz., leaf carotene, ischolar_main carotene, total chlorophyll, number of leaves and ischolar_main weight exhibited higher values of heritability coupled with genetic advance as percent of mean revealed that they may possibly controlled by additive genes. Hence, direct selection may be adopted to improve the characters under consideration during Kharif and summer, respectively.Keywords
Genetic Variability, Carrot Varieties.
- Evaluation of Carrot (Daucus carota L.) Hybrids at Mid-Elevation and Higher in the Nilgiris
Abstract Views :210 |
PDF Views:106
Authors
V. P. Santhi
1,
P. A. Priya
1
Affiliations
1 Horticultural Research Station, Tamil Nadu Agricultural University, Udhagamandalam – 643 001, Tamil Nadu, IN
1 Horticultural Research Station, Tamil Nadu Agricultural University, Udhagamandalam – 643 001, Tamil Nadu, IN
Source
Journal of Horticultural Sciences, Vol 11, No 1 (2016), Pagination: 83-87Abstract
Investigations were made on yield and quality in six hybrids of carrot spanning two seasons under Nilgiri hill conditions during the year 2012-2013. The hybrids were evaluated for per se performance, genotypic coefficient of variance, heritability and genetic advance. A high estimate for genotypic coefficient of variation was observed in ischolar_main-splitting percentage, total chlorophyll, ischolar_main carotenoids, leaf carotenoids and ischolar_main-forking percentage in the hybrids, indicating a potential for improvement of these traits by simple selection, in kharif and summer. Leaf and ischolar_main carotenoid content, total chlorophyll, number of leaves and ischolar_main weight exhibited higher values for heritability, coupled with a high genetic advance, revealing these traits to be under the control of gene action. Simple selection can, therefore, effect improvement in these characters.Keywords
Genetic Variability, Hybrids, Heritability, Genetic Advance.Full Text
References
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- Evaluation of French Beans (Phaseolus vulgaris L.) Bush Type at Mid and Higher Elevations of Nilgiris
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Authors
Affiliations
1 Horticultural Research Station (TNAU), Ooty (T.N.), IN
1 Horticultural Research Station (TNAU), Ooty (T.N.), IN
Source
The Asian Journal of Horticulture, Vol 10, No 1 (2015), Pagination: 100-104Abstract
Ten accessions of traditional french beans - types were collected from different elevations and evaluated for yield and quality at Nanjanad Farm, HRS, Ooty. The 10 entries of bush beans were evaluated in a Randomized Block Design with 3 replications at Nanjanadu Farm, HRS, Ooty. Observations were taken on growth and yield characters from 2010 onwards. Observation on plant height, number of branches, number of compound leaves, days taken of flowering, number of pods, days taken for pod setting, pod length, pod diameter and pod weight per plant were recorded. As indicated in the pooled means of four years from 2010 to 2013, among the bush bean types, accession number FBB-7 (Aruvath avarai) has recorded highest pod yield of 712.73 g/plant and pod weight of 15. 80g/ pod. The highest genotypic coefficient of variation was observed for number of leaves, pod weight and yield. High heritability values were observed in plant height, number of branches, number of leaves, days for flowering and pod development, pod length, pod diameter, pod weight and yield. The expected genetic advance expressed as percentage of mean was relatively high for the characters viz., plant height, branch, number of leaves, days for flowering, days for pod development, pod length, pod diameter, pod weight and yield.