Radiation Induced Mutation for Improving Papaya Variety in Vietnam

Hang, Ngo Thi; Chau, N. M.

doi:10.17660/actahortic.2010.851.8

Cited by 7 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several studies of gamma-ray exposure in different papaya cultivars have been reported. Hang and Chau (2008) exposed the seeds of the papaya variety Dai Loan Tim to gamma rays ranging from 10 to 60 Gy. They indicated that LD50 of gamma rays in germinated papaya seeds was 30 Gy.…”

Section: Resultsmentioning

confidence: 99%

Mutagenic effectiveness, efficiency and dose optimization of gamma rays in papaya (Carica papaya L.) varieties

2022

EJPB

View full text Add to dashboard Cite

The present study was conducted to determine the mutagenic effectiveness, efficiency and lethal dose of gamma rays in papaya varieties CO7, Arka Prabhath and Arka Surya. Papaya seeds were exposed to various doses of gamma rays (0Gy, 100Gy, 150Gy, 200Gy, 250Gy, 300Gy, 350Gy, 400Gy, 450Gy and 500Gy) and the mutagenic effectiveness and efficiency of gamma rays were assessed based on the chlorophyll mutation frequency and biological damage in M 1 plant basis. There was a negative relationship between mutagenic effectiveness and efficiency with the doses of gamma irradiation. LD 50 value was optimized in CO7, Arka Prabhath and Arka Surya as 354, 348 and 341Gy respectively. Generally, the germination, survival and growth rate of papaya decreased with an increase in gammairradiation doses. Lower doses of mutations created very few mutations and higher doses of gamma irradiation induced lethality and sterility of seedlings whereas, lethal dose 50 has proved to be more effective in inducing desirable mutations in papaya. Since identifying the mutagenic efficiency and effectiveness of the mutagen and optimization of lethal dose is the preliminary step in any mutagenic experiment, this study will offer a foundation for further gamma irradiation studies in papaya to develop desirable mutants.

show abstract

Section: Resultsmentioning

confidence: 99%

Mutagenic effectiveness, efficiency and dose optimization of gamma rays in papaya (Carica papaya L.) varieties

2022

EJPB

View full text Add to dashboard Cite

show abstract

“…Several studies of mutation by gamma ray exposure in different papaya cultivars were reported. Hang and Chau (2008) exposed the seeds of the papaya variety Dai Loan Tim to gamma rays ranging from 10 to 60 Gy. They indicated that LD 50 of gamma rays in germinated papaya seeds was 30 Gy.…”

Section: Resultsmentioning

confidence: 99%

Determination of mutagenic sensitivity and its manifestations on papaya (Carica papaya L.) cv. Arka Prabhath

Bhat,

Dinesh,

Vageeshbabu

et al. 2023

J. Hortic. Sci.

View full text Add to dashboard Cite

Papaya is an important fruit crop of the family Caricaceae which needs the improvement in terms of virus resistance and shelf life with dwarf stature. Mutation breeding technique has been considered as an efficient tool adopted by plant breeders to create variability in papaya. The mutation frequency and population structure of the mutants directly depend upon the type of mutagen and the time of exposure. Irrespective of the used mutagens, the ultimate induced mutations are random and therefore determination of mutagenic sensitivity is important pre-requisite. Based on this, investigation on the induction of mutation in papaya cv. Arka Prabhath was carried out with the objective of creating genetic variability through physical mutagen. In this study, papaya seeds were irradiated with five different dose of gamma rays ranging from 50 Gy to 500 Gy. The results revealed that gradual reduction in germination, survival of seedlings and delayed germination with increase in dosage of gamma rays. Based on probit analysis, LD50 (Lethal dose) was fixed at 186.24 Gy. Total seven types of chlorophyll mutants were observed as a result of mutation. Mutagenic efficiency and effectiveness were higher in a lower dose of gamma treatment (50 Gy).

show abstract

“…Germinated seeds of papaya variety Dai Loan Tim were irradiated with gamma rays ranging from 10 to 60 Gy and from the progenies, four mutant plants, which were particularly outstanding in vigour with medium dwarf stature was identified by Hang and Chau (2010). The four mutant dwarf selections (M 064, M 070, M 160 and M 313) were found to bear at a height of 58, 56, 60 and 58 cm from the ground and after 120 to 125 days of planting attained a total height of 160, 145, 162 and 164 cm, respectively.…”

Section: Effect Of Gamma Irradiation On Dwarfing In Fruit Cropsmentioning

confidence: 99%

Recent Advances and Achievements in Mutation Breeding of Fruit Crops: A Review

Sebastian¹,

Bindu²,

Arya³

2023

View full text Add to dashboard Cite

Genetic variation is essential for crop breeding. In classical plant breeding programme, variation is generated by hybridization and selections are made from the resulting segregating generations. Induced mutagenesis can supplement hybridization or able to replace as a source of variability. Since, mutations bring about variation, they provide the ultimate basis for evolution of new forms, varieties or species. Induced and spontaneous mutations have played an important role in developing improved cultivars of various fruit crops as a supplementary method to conventional breeding. But, induced mutations also have well defined limitations in fruit breeding applications, but their possibilities may be expanded by the use of in vitro mutation techniques.

show abstract

Radiation Induced Mutation for Improving Papaya Variety in Vietnam

Cited by 7 publications

References 0 publications

Mutagenic effectiveness, efficiency and dose optimization of gamma rays in papaya (Carica papaya L.) varieties

Mutagenic effectiveness, efficiency and dose optimization of gamma rays in papaya (Carica papaya L.) varieties

Determination of mutagenic sensitivity and its manifestations on papaya (Carica papaya L.) cv. Arka Prabhath

Recent Advances and Achievements in Mutation Breeding of Fruit Crops: A Review

Contact Info

Product

Resources

About