Improvement of genetic variability in seedlings of Spathoglottis plicata orchids through X-ray irradiation

Abstract. Aloysius S, Purwantoro A, Dewi K, Semiarti E. 2017. Improvement of genetic variability in seedlings of Spathoglottis plicata orchids through X-ray irradiation. Biodiversitas 18: 20-27. Developing genetic variability of orchids via mutation is promising for orchid breeding. The objective of...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: SUYITNO ALOYSIUS, AZIZ PURWANTORO, KUMALA DEWI, ENDANG SEMIARTI
Formato: article
Lenguaje:EN
Publicado: MBI & UNS Solo 2017
Materias:
Acceso en línea:https://doaj.org/article/2b950d2854c8467cb74194a3fdb587b1
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:2b950d2854c8467cb74194a3fdb587b1
record_format dspace
spelling oai:doaj.org-article:2b950d2854c8467cb74194a3fdb587b12021-11-16T13:50:46ZImprovement of genetic variability in seedlings of Spathoglottis plicata orchids through X-ray irradiation1412-033X2085-472210.13057/biodiv/d180104https://doaj.org/article/2b950d2854c8467cb74194a3fdb587b12017-02-01T00:00:00Zhttps://smujo.id/biodiv/article/view/747https://doaj.org/toc/1412-033Xhttps://doaj.org/toc/2085-4722Abstract. Aloysius S, Purwantoro A, Dewi K, Semiarti E. 2017. Improvement of genetic variability in seedlings of Spathoglottis plicata orchids through X-ray irradiation. Biodiversitas 18: 20-27. Developing genetic variability of orchids via mutation is promising for orchid breeding. The objective of this research was to improve genetic variation of Spathoglottis plicata orchids through X-ray-irradiation of the orchid seeds. The method involved X-ray irradiation of one month old mature orchid seeds at doses of 0, 6, 12, 18, and 24 rad. The X-ray irradiated seeds were sown on a half strength of MS medium and grown into protocorms (developing orchid embryo). Eight weeks-old protocorms were subcultured onto NP-SIM medium. Five months-old seedlings were then subcultured again into a new flask and morphological observations were recorded. Genetic variability detection was conducted using PCR RAPD based on nine primers, i.e. OPA1, OPA2, OPA11, OPA12, OPA14, OPB1, OPB4, OPD12, OPD14. The data was analyzed using GenAlex 6.1 software to obtain the genetic distance. Moreover, NTSys ver.2 was used to analyze the data for clustering and constructing a dendrogram based on Neighbour Joining model. The result showed that X-ray irradiation with doses of 12-18 rad was able to stimulate morphological variation of seedlings, especially characters of leaf, root and shoot. Interestingly, we found 2 in vitro early flowering plants among one years old X-ray irradiated plants, indicated that somehow X-ray mutation affect flowering time in orchid. Based on the dendrogram of genetic distance that the group of mutants was farther than the WT group and the percentage of polymorphism was bigger than that of wild type group, it is concluded that 12-18 rad doses of X-ray irradiation can be used for induction of genetic variability in Spathoglottis orchid. Keywords: Genetic variability, seed, seedling phenotype, Spathoglottis plicata, X-ray Abbreviations: BAP = benzylaminopurine; NAA = naphthaleneacetic acid; 2iP = 2 = isopentenyl adenine; NP = new phalaenopsis; SIM = shoot induction mediumSUYITNO ALOYSIUSAZIZ PURWANTOROKUMALA DEWIENDANG SEMIARTIMBI & UNS SoloarticleBiology (General)QH301-705.5ENBiodiversitas, Vol 18, Iss 1 (2017)
institution DOAJ
collection DOAJ
language EN
topic Biology (General)
QH301-705.5
spellingShingle Biology (General)
QH301-705.5
SUYITNO ALOYSIUS
AZIZ PURWANTORO
KUMALA DEWI
ENDANG SEMIARTI
Improvement of genetic variability in seedlings of Spathoglottis plicata orchids through X-ray irradiation
description Abstract. Aloysius S, Purwantoro A, Dewi K, Semiarti E. 2017. Improvement of genetic variability in seedlings of Spathoglottis plicata orchids through X-ray irradiation. Biodiversitas 18: 20-27. Developing genetic variability of orchids via mutation is promising for orchid breeding. The objective of this research was to improve genetic variation of Spathoglottis plicata orchids through X-ray-irradiation of the orchid seeds. The method involved X-ray irradiation of one month old mature orchid seeds at doses of 0, 6, 12, 18, and 24 rad. The X-ray irradiated seeds were sown on a half strength of MS medium and grown into protocorms (developing orchid embryo). Eight weeks-old protocorms were subcultured onto NP-SIM medium. Five months-old seedlings were then subcultured again into a new flask and morphological observations were recorded. Genetic variability detection was conducted using PCR RAPD based on nine primers, i.e. OPA1, OPA2, OPA11, OPA12, OPA14, OPB1, OPB4, OPD12, OPD14. The data was analyzed using GenAlex 6.1 software to obtain the genetic distance. Moreover, NTSys ver.2 was used to analyze the data for clustering and constructing a dendrogram based on Neighbour Joining model. The result showed that X-ray irradiation with doses of 12-18 rad was able to stimulate morphological variation of seedlings, especially characters of leaf, root and shoot. Interestingly, we found 2 in vitro early flowering plants among one years old X-ray irradiated plants, indicated that somehow X-ray mutation affect flowering time in orchid. Based on the dendrogram of genetic distance that the group of mutants was farther than the WT group and the percentage of polymorphism was bigger than that of wild type group, it is concluded that 12-18 rad doses of X-ray irradiation can be used for induction of genetic variability in Spathoglottis orchid. Keywords: Genetic variability, seed, seedling phenotype, Spathoglottis plicata, X-ray Abbreviations: BAP = benzylaminopurine; NAA = naphthaleneacetic acid; 2iP = 2 = isopentenyl adenine; NP = new phalaenopsis; SIM = shoot induction medium
format article
author SUYITNO ALOYSIUS
AZIZ PURWANTORO
KUMALA DEWI
ENDANG SEMIARTI
author_facet SUYITNO ALOYSIUS
AZIZ PURWANTORO
KUMALA DEWI
ENDANG SEMIARTI
author_sort SUYITNO ALOYSIUS
title Improvement of genetic variability in seedlings of Spathoglottis plicata orchids through X-ray irradiation
title_short Improvement of genetic variability in seedlings of Spathoglottis plicata orchids through X-ray irradiation
title_full Improvement of genetic variability in seedlings of Spathoglottis plicata orchids through X-ray irradiation
title_fullStr Improvement of genetic variability in seedlings of Spathoglottis plicata orchids through X-ray irradiation
title_full_unstemmed Improvement of genetic variability in seedlings of Spathoglottis plicata orchids through X-ray irradiation
title_sort improvement of genetic variability in seedlings of spathoglottis plicata orchids through x-ray irradiation
publisher MBI & UNS Solo
publishDate 2017
url https://doaj.org/article/2b950d2854c8467cb74194a3fdb587b1
work_keys_str_mv AT suyitnoaloysius improvementofgeneticvariabilityinseedlingsofspathoglottisplicataorchidsthroughxrayirradiation
AT azizpurwantoro improvementofgeneticvariabilityinseedlingsofspathoglottisplicataorchidsthroughxrayirradiation
AT kumaladewi improvementofgeneticvariabilityinseedlingsofspathoglottisplicataorchidsthroughxrayirradiation
AT endangsemiarti improvementofgeneticvariabilityinseedlingsofspathoglottisplicataorchidsthroughxrayirradiation
_version_ 1718426471785037824