Universal Journal of Plant Science Vol. 4(3), pp. 23 - 34
DOI: 10.13189/ujps.2016.040301
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Genetic Variability and Traits Association Analysis of Tomato (Lycopersicon esculentum L.) Genotypes for Yield and Quality Attributes

Md. Mehedi Hasan , Md. Abdullah Al Bari , Mohammad Anwar Hossain ^*
Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Bangladesh

ABSTRACT

The experiment was conducted at the experimental farm of the department of Genetics and Plant Breeding, Bangladesh agricultural university, Mymensingh, Bangladesh, with 30 different tomato (Lycopersicon esculentum L.) genotypes to study the genetic variability and characters association for yield and yield-contributing traits along with quality traits. The experiment was laid out in a Randomized Complete Block Design with three replications. Analysis of variances showed high degree of variation existed among the genotypes of the studied traits. Yield contributing traits showed higher phenotypic co-efficient of variation as compared to their corresponding genotypic co-efficient of variation indicating considerable environmental influences on them. Individual fruit weight showed high heritability (99.71) with high genetic advance (85.4) followed by fruits per plant (99.65 & 81.26) suggested a good scope for the improvement of these characters through selection. High heritability but low genetic advance showed in number of primary branches (75.87 & 3.67), fruit cluster per plant (99.49 & 6.12), fruit diameter (98.83 & 5.59), total soluble solid (80.51 & 1.85) and ascorbic acid content (90.75 & 9.52) indicated limited scope for the improvement of these traits through selection. Correlation coefficient analysis showed that yield per plant had significant positive correlations with individual fruit weight (0.609***) and number of fruit cluster per plants (0.396*) whereas significant negative correlation was observed with number of primary branches per plant (-0.421*). Path co-efficient analysis revealed that the maximum positive direct contribution towards yield was through individual fruit weight (0.704) whereas plant height (-0.038) showed negative direct contribution towards yield. Individual fruit weight and number of fruit cluster per plant could be crucial for improving tomato yield.

KEYWORDS
Tomato, Genetic Diversity, Heritability, Genetic Advance, Correlation co-efficient, Path co-efficient, Yield, Quality

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Md. Mehedi Hasan , Md. Abdullah Al Bari , Mohammad Anwar Hossain , "Genetic Variability and Traits Association Analysis of Tomato (Lycopersicon esculentum L.) Genotypes for Yield and Quality Attributes," Universal Journal of Plant Science, Vol. 4, No. 3, pp. 23 - 34, 2016. DOI: 10.13189/ujps.2016.040301.

(b). APA Format:
Md. Mehedi Hasan , Md. Abdullah Al Bari , Mohammad Anwar Hossain (2016). Genetic Variability and Traits Association Analysis of Tomato (Lycopersicon esculentum L.) Genotypes for Yield and Quality Attributes. Universal Journal of Plant Science, 4(3), 23 - 34. DOI: 10.13189/ujps.2016.040301.