Chikkanaragund, K. and Biradar, B.D.
(2018)
Estimation of genetic variability, heritability and genetic advance for shoot fly resistance and photoperiod
insensitivity components in minicore collection of rabi sorghum [Sorghum bicolor (L.) Moench].
Journal Farm Sciences, 31 (3).
pp. 264-270.
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Abstract
The present investigation titled estimating genetic variability, heritability and genetic advance for shoot fly
resistance and photoperiod insensitivity components in minicore collection of rabi sorghum [Sorghum bicolor (L.) Moench]
consisted of 237 minicore with four checks ( M 35-1, IS 2312 and BJV 44 (resistant checks) and DJ 6514 (susceptible
check) for shootfly. Analysis of variance showed significant genetic variability among genotypes for all traits across three
sowing dates except leaves per plant, seedling vigour at late sowing, seedling height at timely and late sowing, 50 per cent
flowering, panicle emergence, plant height at early sowing and 100 seed weight at late sowing. High phenotypic coefficient
of variation and genotypic coefficient of variation were observed for the characters viz., seedling vigour, leaf erectness,
deadheart percentage, oviposition percentage, glossiness, trichome density, panicle weight, panicle length and grain yield
per plant across all the three sowing situations. Moderate values of PCV and GCV were observed for seedling height during
early rabi sowing. While seedling height recorded high PCV values and moderate GCV values during timely and late
sowings. Low PCV and GCV values were recorded with characters viz., days to 50 per cent flowering, days to panicle
emergence and days to physiological maturity across all the three dates of sowing. The characters viz., oviposition percentage
(early sowing), seedling height (early sowing), seedling vigour (early and timely sowing), 50 per cent flowering (timely and
late sowing), plant height (timely sowing), days to panicle emergence and days to physiological maturity during timely and
late sowings, panicle length, panicle weight and grain yield per plant across all the three sowings showed high estimates of
broad sense heritability. But, moderate values of heritability were observed for characters viz., seedling vigour (late sowing),
seedling height (timely and late sowings), oviposition percentage (timely and late sowings), 50 per cent flowering, days to
panicle emergence and days to physiological maturity during early sowing. Similarly, plant height showed moderate values
of heritability during early and late sowings. The traits viz., 100 seed weight (all sowings) and leaves per plant (early and
late sowings) also showed moderate heritability. High heritability coupled with high genetic advance as per cent of mean
was observed for the characters viz., glossiness, trichome density, deadhearts, leaf erectness, panicle weight, panicle length
and grain yield per plant across all three dates of sowing.
| Item Type: |
Article
|
| Uncontrolled Keywords: |
Genetic variability, Photoperiod insensitivity, Shoot fly resistance, Sorghum |
| Author Affiliation: |
Department of Genetics and Plant Breeding, College of Agriculture, Dharwad
University of Agricultural Sciences, Dharwad - 580 005, Karnataka, India |
| Subjects: |
Crop Improvement |
| Divisions: |
Sorghum |
| Depositing User: |
Mr T L Gautham
|
| Date Deposited: |
03 Jan 2019 05:37 |
| Last Modified: |
03 Jan 2019 05:37 |
| URI: |
http://eprints.icrisat.ac.in/id/eprint/15734 |
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