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Variation among guava (Psidium guajava L.) accessions in seed hardness and its association with fruit characteristics

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Title Variation among guava (Psidium guajava L.) accessions in seed hardness and its association with fruit characteristics
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Creator S Rajan, LP Yadava, Ram Kumar
 
Subject guava (Psidium guajava L.), seed hardness, fruit characteristics
 
Description Not Available
Guava is an important tropical fruit crop with considerable economic potential but to further increase popularity and
demand, the soft seeded cultivars needs to be developed. Breeding for soft seeded cultivars is one of the major objectives
of guava breeding programmes but limited research on seed hardness and its association with other fruit characters has
been conducted. A study was carried out to determine the genotypic and phenotypic variation in and association among
the fruit traits of weight, height, diameter, firmness and the seed characters of weight and number of seeds per fruit, fruit
seed weight ratio, 100-seed weight and seed hardness. Trait values were estimated in 50 accessions grown under subtropical
conditions. High genotypic (GCV) and phenotypic (PCV) coefficients of variation were found in all the traits studied.
Estimates of heritability ranged from 0.499 (fruit firmness) to 0.988 (fruit seed weight ratio). All the traits except 100-
seed weight, showed almost similar magnitude of genetic advance, and exceptionally high genetic advance for fruit
weight, number of seeds per fruit and fruit: seed weight ratio. At genotypic and phenotypic levels, seed hardness was
significantly and positively correlated with 100-seed weight of the fruit and inversely with number of seeds fruit-1. In
path analysis, residual values at genotypic (0.076) and phenotypic (0.268) levels were fairly low and indicate that
variables included in this study had significant association with seed hardness. Correlation and path coefficient analysis
revealed that 100-seed weight was the most important character for realizing improvement in seed hardness.
Not Available
 
Date 2017-10-26T05:35:23Z
2017-10-26T05:35:23Z
2012-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/5566
 
Language English
 
Relation Not Available;
 
Publisher Confederation of Horticulture Association of India