Abstract:
A field experiment was conducted at the experimental field of Sher-e-Bangla Agricultural
University, Dhaka. during November 2012 to April 2013. Nineteen genotypes of tomato
(Solwzu'n Ivopersicun, L.) were studied in the present study. The objectives of the study
were diversity and biochemical analysis of tomato to assess the magnitude of genetic
divergence in genotypes, association among the characters and their contribution to yield
and quality. The analysis of variance indicated significantly higher amount of variability
among the genotypes for all the characters. Considering genetic parameters high
genotypic co-efficient of variation (GCV) was observed for average fruit weight, fruit per
cluster, fruit per plant and fruit yield per plant whereas days to first flowering, days to
50% flowering and days to maturity showed low CCV. High heritability with high
genetic advance in percent of mean was observed for number of fruits per cluster, number
of fruits per plant, average fruit weight and fruit yield per plant indicating that these traits
were under additive gene control and selection for genetic improvement for these traits
would be effective. The results obtained, showed that fruit yield per plant had high
positive significant relation with fruit weight, but high negative significant relation with
days to first flowering, days to maturity, number of fruit per clusters and number of fruit
per plant. Days to 50% flowering, number of branches per plant, fruit weight and fruit
length had high positively direct effect on yield of tomato. So, these are found to be
important characters and could be used on direct selection for yield. Considering all the
characters, 04, 06. (39, G18 and Gig can be selected for future breeding program.
Lycopene content of samples from genotype C2, G4 (is, Gs and Gig showed very high
lycopene content at both absorbance 472 nm and 502 nm. 01 and genotype have very
high Vitamin C content. Cc and Gg genotypes having high brix content indicated that
they could be recommending to the farmers for cultivation and could be used for future
breeding program to obtain healthy and for protective tomatoes against diseases
Description:
A Thesis
submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
GENETICS AND PLANT BREEDING
