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Asian Journal of Biological Sciences
  Year: 2012 | Volume: 5 | Issue: 7 | Page No.: 358-364
 
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Estimation and Interrelationships of Genetic Variability Parameters of Some Morpho-phenological Traits in Spring Rapeseed (Brassica napus L.)

Danial Kahrizi and Tohid Alaahvarand

Abstract:
Oilseed rape (Brassica napus L.) is one of the most important oil seed crops. The present study was carried out to (1) study of some agro-phenological traits and (2) to estimate genetic variability parameters for the studied traits in 17 spring rapeseed genotypes (SW Highly, Olga, Eagle, Cracker Jack, Sarigol, Mozart, SW 3497, RGS003, Amica, Calimar, Hyola 330, Hyola 401, Hyola 308, Goliath, Zarfam, Profit and Option 500). The experiment was conducted based on Randomized Complete Blocks Design (RCBD) with three replications. The characters studied were grain yield, some phenological, morphological and physiological traits. Statistical analysis showed significantly differences among the genotypes based on the most studied traits. This indicated that there was sufficient variability available to have an effective selection. Genotypic and phenotypic coefficients of variations were high for grain yield, crown to first node distance (CND), Harvest Index (HI). High genetic gain was observed for HI (42.91%) and CND (39.25%). Correlation analysis showed the grain yield was significantly and negatively correlated with phenological traits include days to flowering initiation (-0.57), days to 10% flowering (-0.57), days to 50% flowering (-0.59), days to complete flowering (-0.57), days to complete ripening (-0.55) and was significantly and positively correlated with HI (0.80) and chlorophyll content (-0.32). High heritability estimates in characters i.e., all phonological traits (from 84.38 to 93.18) and chlorophyll content (65.35), whereas low heritability was observed for the grain yield (32.49), CND (33.15) and HI (30.25).
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How to cite this article:

Danial Kahrizi and Tohid Alaahvarand, 2012. Estimation and Interrelationships of Genetic Variability Parameters of Some Morpho-phenological Traits in Spring Rapeseed (Brassica napus L.). Asian Journal of Biological Sciences, 5: 358-364.

URL: https://scialert.net/abstract/?doi=ajbs.2012.358.364

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