Genetic Parameter Contributing to Lodging Resistance of F₂ Population in Red Rice

Abstract

The effectiveness and successful of selection depend on the value of genetic variability, heritability and genetic advance estimation. The purpose of this research is to measure the value of genetic parameters (variability, heritability and genetic advance) of F2 lines derived from crossing of mutant red rice, local accession of red rice, and commercial upland rice varieties. This research used single plant design. The rice materials used in this research was the F2 seeds derived from hibridization between MR1512 X Inpago 8, MR1512 X Banyuasin, Inpago 8 X Balok, Balok X Banyuasin and Balok X Inpago 8. Selection intensity used is 10%. The filled grains and grain weight have a wide phenotypic variability, whereas the plant height and the productive tiller numbers have wide genotypic variability. The high heritability value was found in the plant height, flowering time, and harvest time. The high genetic advance was found in plant height, productive tillers number, flowering time, and harvest time. In the present work, it has been shown that the plant height, productive tiller numbers, flowering time, and harvest time are the important traits for use in rice lodging tolerance breeding program.

Tolerance of F6 Red Rice Lines against Iron (Fe) Stress

“…Rice plant that are tolerant to Fe's stress have the ability to survive high fe concentration conditions. According to Mahender et al (2019) membrane so that it does not absorb Fe 2+ . According to (Noor & Khairuddin, 2013) Tolerant plants can also store Fe 2+ absorbed in old root, stem, or leaf tissues as a form of avoidance of stress.…”

Variability, heritability, and performance of 28 West Sumatran upland rice cultivars, Indonesia

“…The value of variability and the estimated heritability are essential components that must be measured before determining the method and time for selection (Mustikarini et al 2019). The coefficient of genotypic variation (GCV) and the coefficient of phenotypic variation (PCV) are very useful in determining the amount of diversity that exists in the population and are the basis for variability criteria (Mustikarini et al 2019;Saidon et al 2020).…”

“…The value of variability and the estimated heritability are essential components that must be measured before determining the method and time for selection (Mustikarini et al 2019). The coefficient of genotypic variation (GCV) and the coefficient of phenotypic variation (PCV) are very useful in determining the amount of diversity that exists in the population and are the basis for variability criteria (Mustikarini et al 2019;Saidon et al 2020). All traits showed high PCV than GCV, similar to the results reported by Srivastava et al (2017); Tiruneh et al (2021), indicating that the variance observed for the traits was more influenced by the genetic factors and suitable environment support the expression of genetic (Kartahadimaja et al 2021).…”

Diversity of black pepper plant (Piper nigrum) in Bangka Island (Indonesia) based on agro-morphological characters

“…The phenotypic variances were very far from each other shows the high influence of environment on black pepper traits (Preethy et al 2018). The value of variability is the important component to measure before determining the method and time to perform further selection (Mustikarini et al 2019). Characters that have a wide and quite wide phenotypic diversity can be utilized for developing superior varieties of black pepper.…”