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Journal : Jurnal Biologi Tropis

Genetic Diversity of Red Rice (Oryza Sativa L.) Population M2 Results of G16 Rice Genotype Mutations with 200gy and 300gy Gamma Ray Iradiation A A K Sudharmawan; I G P M Aryana; Ni Wayan Sri Suliartini; Sofian Aji Purnama
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i4.4425

Abstract

Mutational breeding can be used to obtain superior varieties by improving some of the desired traits, without changing most of the good traits. The purpose of this study was to determine the genetic diversity of brown rice through segregation of traits in rice mutants due to gamma ray irradiation at doses of 200 gy and 300 gy. The method used is an experimental method carried out from May to September 2021 with a single plant. The distribution of the data was tested by the Kolmogorov-Smirnov test using software and the segregation ratio suitability test using the Chi-Square method with a 5% significance level. The results showed that the data distribution was normally distributed, meaning that it was controlled by many genes (polygenic). on the quantitative trait whose data distribution is not normally distributed, it indicates that the trait is controlled by simplegenic. The results of the Mendel's ratio suitability test using Chi-Square for quantitative traits that follow the Mendelian ratio, which shows a segregation ratio of 9: 7 (double recessive epistasis) where the same phenotype is produced by both homozygous recessive genotypes and two recessive genes are epistatic to the dominant allele. For traits that do not follow the Mendelian ratio or their modifications, it is assumed that they are controlled by many genes (minor genes) so that individual effects are difficult to distinguish.
Identification Of Quantitative Characters of Two Pineapple Varieties (Ananas comosus L. Merr) Resulted By Propagation Of Stem Cutting In Okinawa Prefecture Laela Maulida; Ni Wayan Sri Suliartini; I Wayan Sudika
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i3.5070

Abstract

Pineapple (Ananas comosus L. Merr) is one of the significant yields and the fundamental product created in Okinawa since it is appropriate climatic condition for pineapple improvement. seeds. This study intends to decide the quantitative characters of seedlings from stem engendering of pineapple (Ananas comosus L. Merr) stem cutting on two assortments in Okinawa, Japan. The review was led in December 2022 at Yagaji Island Nursery, Okinawa, Japan. A quantitative descriptive approach was used in the research, and random sampling was used to select 15 seedlings from each variety based on their age, starting at 60 HST, 90 HST, and 120 HST, for a total of 90 samples. Each seed test was noticed in view of boundaries set each month, in particular seedlding level, stem width number of leaves and. Research information were dissected utilizing basic measurement examination. The mean of each character was tried utilizing the T-test at the 5% level and the connection between's qualities was broke down utilizing the r-test at the 5% level. The outcomes showed that there were contrasts in quantitative characters of the two assortments, specifically the N67-10 assortment showing taller seedlings, more number of leaves and bigger stem at the three periods of perception, with the exception of 60 days for stem distance across and 120 days for seedling level. With a range of 0.44-0.77, the phenotypic correlation between characters is real.