Segregation ratio and heritability of agronomic character in yardlong bean F2 population

Abstract

Yardlongbean is very popular vegetable in Indonesia. Genetic variability can be induced by crossing two parental. The segregation ratio in Fn generations specify whether the progeny have attained homozygosity or still in process of segregation. Heritability is the genetic variability degree which may be inherited to the progeny. The aim of the research was to determine segregation ratio and heritability of agronomic character from crossing of red immature pod and whitish green immature pod of yardlong bean. F2 population and their parental were planted at Agrotechnopark, located in Tembalang-Semarang, Central Java, Indonesia. Data were analyzed using Chi square test for suitability normal distribution. Broad sense heritability was also calculated. The results showed that frequency of character plant height, number of leaf, pod length and sweet taste follow a normal distribution, while the frequency distribution of pod weight did not follow normal dstribution. Segregation ratio of pod weight was 12: 3: 1. Number of leaf and pod length had low broad sense heritability.