Estimation Variability, Heritability and Genetic Advance of Mutant Black Rice (M6)

Abstract

A better understanding of variability in plant populations is crucial for crop improvement which plant breeders can use through selection. This study aimed to determine selection criteria for the sixth generation of black rice through genetic variability, heritability value and genetic advance. This research was conducted from March to July 2018 at Pakahan Village, Jogonalan Sub-district, Klaten Regency, Central Java, using a Randomized Complete Block Design (RCBD). The variables observed were plant height, total number of tillers and productive tillers, panicle length, number of seeds per panicle, panicle intensity index, weight per panicle, 1,000 seed weight, seed weight per plant, flowering age, harvest age, plot yield, yield per hectare, rice color and total anthocyanin content. Variance analysis showed that there was a very significant difference (p <0.01) among the genotypes tested for all observed characters indicating variability. In this study, the phenotypic coefficient of variance (PCV) values was relatively higher than the genotypic coefficient of variance (GCV) for all traits. However, GCV values were close to PCV values in some characters such as plant height, flowering age, harvest age, rice color and anthocyanin content which showed a high contribution of genotypic effects to the phenotypic expression of these characters. The high heritability and high average value of genetic advance were indicated in the parameters of plant height, flowering age, harvest age, rice color and anthocyanin content. The characters of plant height, flowering age, harvest age, rice color and anthocyanin content can be used as sixth-generation black rice selection criteria.

Genetic Characteristics of F2 Populations Obtained Through Double and Three-Way Crosses in Cayenne Peppers

“…Selecting populations with high heritability proved more effective than the selection with low heritability. High heritability values indicated that most of the phenotypic variability resulted from genetic variability; hence, selection will experience genetic improvement (Sofian et al, 2019). Based on the analysis of variance and heritability, the selection process for the double-and threeway cross F 2 populations of cayenne pepper was effective.…”

Novelty, Distinctiveness, Uniformity, and Stability Testing for Three Potential Lines of Black Rice

“…The seeds resulting from gamma radiation are then called potential lines. Cempo Ireng results from gamma irradiation in the National Nuclear Energy Agency, Jakarta, 2014, with doses of 0, 200, and 300 Gray (4,5). Black beads resulting from gamma-ray irradiation subsequently undergo a selection process at each generation and produce potential seeds, namely the potential lines 8, 51, and 52.…”

Phenotipe and lignin content black rice mutant of gh 51 line

“…Black rice has health benefits with its content of anthocyanins and higher fibers compared to other types of rice. Universitas Sebelas Maret has started a black rice breeding program from the local cultivar Cempo Ireng, and six lines have been obtained, including GH 51 [1,2,3,4,5]. GH 51 has better agronomic characters than the original parents, but it is not resistant to brown plant hoppers.…”