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WARAS NURCHOLIS
Department of Biochemistry, Faculty of Mathematics and Natural Sciences, Institut Pertanian Bogor. Jl. Agatis, Kampus IPB Darmaga, Bogor 16680, West Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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The diversity of agromorphological characters of Portulaca grandiflora in the MV8 population deriving from recurrent irradiation SYARIFAH IIS AISYAH; REGINA AGRITENIA MAYRISCHA SARASWATI; YOSHUA SHANDY YUDHA; WARAS NURCHOLIS
Biodiversitas Journal of Biological Diversity Vol. 23 No. 9 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d230908

Abstract

Abstract. Aisyah SI, Saraswati RAM, Yudha YS, Nurcholis W. 2022. The diversity of agromorphological characters of Portulaca grandiflorain the MV8 population deriving from recurrent irradiation. Biodiversitas 23: 4432-4439. A multipurpose ornamental plant, Portulaca grandiflora has the value of attractiveness and uniqueness, which lies in various agromorphological characters, primarily in flowers. The potential of P. grandiflora in qualitative characters such as new and unique shapes and colors of the morphology must be enhanced further to increase its economic and aesthetic significance as a floriculture commodity. The induced mutation technique has been proven to improve plants' morphological diversity, and even numerous novel cultivars are produced from artificial mutations. The recurrent irradiation technique was applied in the P. grandiflora mutation breeding program and produced new morphological variations of P. grandiflora until the MV7 generation (seventh generation of the mutation breeding program). The current study aimed to evaluate the diversity of morphological characters of P. grandiflora mutants in the MV8 population resulted from reccurent irradiation technique. Fifty-three selected mutants of P. grandiflora generation MV7 were multiplied by stem cuttings to create an MV8 population. The total MV8 population of P. grandiflora, the result of vegetative propagation, was 1104 plants. The diversity of morphological characters of P. grandiflora in the MV8 population was identified quantitatively (measurement) and qualitatively (visual observation). The results of this study reveal that several P. grandiflora mutants in the MV8 population have a new phenotypic appearance, chiefly in the qualitative characters of flowers. Besides, most of the P. grandiflora MV8 mutant population has inherited identical morphological characters from the previous generation (MV7 population). Further morphological analysis in the next generation needs to be conducted to evaluate the morphological stability of P. grandiflora mutants to develop new cultivars and to investigate the possibility of new phenotypic variations caused by recurrent irradiation treatments.
Variability of agromorphological traits in Portulaca grandiflora through induced mutation using colchicine SYARIFAH IIS AISYAH; NUR IZZAH MEININGRUM; YOSHUA SHANDY YUDHA; WARAS NURCHOLIS
Biodiversitas Journal of Biological Diversity Vol. 25 No. 6 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250617

Abstract

Abstract. Aisyah SI, Meiningrum NI, Yudha YS, Nurcholis W. 2024. Variability of agromorphological traits in Portulaca grandiflora through induced mutation using colchicine. Biodiversitas 25: 2484-2493. Portulaca grandiflora Hook is an ornamental plant originating from the Portulacaceae family, and it has been extensively cultivated on various continents. P. grandiflora displays appealing flower shapes and vibrant colors suitable for growth in a tropical landscape. Increased morphological diversity carries significant importance in the aesthetic function of ornamental plants. The higher the variation in the morphological characteristics of ornamental plants, the greater the market value of these plants due to their enhanced aesthetic appeal. Additionally, colchicine, a polyploidy-inducing agent, can enhance the plant genetic diversity. This study aims to investigate the impact of colchicine application on the morphological characters of P. grandiflora. The experiment was conducted for four months at the Leuwikopo Experimental Field, IPB, with two factors of Completely Randomized Block Design: The colchicine treatment comprises five concentration levels (0, 0.05, 0.1, 0.15, and 0.2), with four test genotypes: Orange, Peach, Bicolor, and Banana. A significant reduction in growth was observed in the Bicolor genotype, followed by the Banana genotype, indicating varying tissue sensitivities to colchicine treatment. The study reveals variations in morphological responses for each concentration treatment and genotype used. Statistical results confirm aspects: (i) each genotype displays different performance, (ii) the combined treatment of colchicine significantly influences the growth and development of quantitative traits, and (iii) The interaction (colchicine x genotype) was statistically significant for all quantitative characters of P. grandiflora except stem diameter. Qualitative traits, such as morphological changes in stem color, leaf color, and shape, were observed. Three correlation values are positive and statistically significant: plant length and leaf width, number of branches on shoots and leaves, and number of branches on shoots and flowers. Putative mutants of P. grandiflora exhibiting new traits require in-depth exploration in subsequent generations.
Co-Authors NUR IZZAH MEININGRUM REGINA AGRITENIA MAYRISCHA SARASWATI SYARIFAH IIS AISYAH SYARIFAH IIS AISYAH YOSHUA SHANDY YUDHA YOSHUA SHANDY YUDHA