GENETIC EVALUATION OF TOMATO GENOTYPES UNDER PROTECTED CONDITIONS
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Date
2018-06-22
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UHF,NAUNI
Abstract
ABSTRACT
Tomato is one of the most important vegetables consumed in fairly large quantity
worldwide. It is one of the premier crop of India generating sizeable employment and is widely grown
under protected conditions. The present investigation entitled “Genetic evaluation of tomato
genotypes under protected conditions” was carried out at Vegetable Research Farm of the Department
of Vegetable Science, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan (HP) in a
naturally ventilated polyhouse during Summer season (July- December) 2017. The experiment was
laid out in RCBD with three replications comprising of twenty genotypes of tomato. The observations
were recorded on various characters viz., plant height, inter-nodal distance, days to first picking,
number of fruits per plant, number of fruits per cluster, average fruit weight (g), yield per plant (kg),
yield per square meter (kg), fruit shape index, fruit colour, pericarp thickness, total soluble solids
(°brix), whole fruit firmness, lycopene content, ascorbic acid content, harvest duration, number of
seeds per fruit and 1000 seed weight (g). A wide range of variability was observed for all the traits.
High genetic variability was recorded for lycopene content, whole fruit firmness and yield per plant.
High heritability coupled with high genetic gain was recorded for yield per plant, number of fruits per
cluster, pericarp thickness, fruit shape index, whole fruit firmness and lycopene content. From the
present investigation, it may be inferred that genotypes, UHFT-7-17, UHFT-4-17, UHFT-2-17,
UHFT-3-17, UHFT-9-17 and UHFT-5-17 gave higher yield and best quality traits. These genotypes
can be evaluated further for their inclusion in hybrid and cultivar development programme for
protected structures. Fruit yield per plant was significantly correlated with average fruit weight,
number of fruits per plant, harvest duration and pericarp thickness. Path analysis revealed that
maximum positive direct effect towards fruit yield per plant was contributed by average fruit weight
followed by harvest duration and thousand seed weight.
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