Radiosensitivity test on two varieties of Terengganu and Arab used in mutation breeding of roselle (Hibiscus sabdariffa L.)
A study was carried out in a greenhouse to determine the effective doses for mutation breeding of roselle during the year 2006/2007. Seedling height was the parameter recorded at 2, 3, 4 and 5 weeks after sowing of M1 seeds of 2 varieties Terengganu and Arab. The results indicated that increasing do...
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| Format: | Article |
| Language: | English |
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Academic Journals
2009
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| Online Access: | http://irep.iium.edu.my/12689/ http://irep.iium.edu.my/12689/1/Harding%2520and%2520Mohamad.pdf |
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| author | S.S, Harding Osman, Mohamad |
| author_facet | S.S, Harding Osman, Mohamad |
| author_sort | S.S, Harding |
| building | IIUM Repository |
| collection | Online Access |
| description | A study was carried out in a greenhouse to determine the effective doses for mutation breeding of roselle during the year 2006/2007. Seedling height was the parameter recorded at 2, 3, 4 and 5 weeks after sowing of M1 seeds of 2 varieties Terengganu and Arab. The results indicated that increasing doses of gamma irradiation from 0 to 1200 Gy in steps of 100 Grey (Gy) caused increasing physiological
effect on seedling height. There was a progressive increase in seedling height from 2 until 5 weeks after sowing. However, at week 2 and 3 after sowing there was no significant difference between seedling heights. The LD50 values determined from regression analyses for Terengganu based on seedling height were 754, 821.4, 761.7 and 766.7% at 2, 3, 4 and 5 weeks after sowing, respectively and the LD50 values for Arab were 773.8.%, 804.1.%, 704.2 and 708.3% at 2, 3, 4 and 5 weeks, respectively. 2 weeks after
sowing appears to be the most appropriate time for data collection. The LD50 values at 2 weeks were not significantly different from 3, 4 and 5 weeks after sowing. The LD50 values for Terengganu and Arab determined at 2 weeks were 754 and 773.8%, respectively. |
| first_indexed | 2025-11-14T14:46:24Z |
| format | Article |
| id | iium-12689 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T14:46:24Z |
| publishDate | 2009 |
| publisher | Academic Journals |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-126892012-01-26T02:39:21Z http://irep.iium.edu.my/12689/ Radiosensitivity test on two varieties of Terengganu and Arab used in mutation breeding of roselle (Hibiscus sabdariffa L.) S.S, Harding Osman, Mohamad S Agriculture (General) A study was carried out in a greenhouse to determine the effective doses for mutation breeding of roselle during the year 2006/2007. Seedling height was the parameter recorded at 2, 3, 4 and 5 weeks after sowing of M1 seeds of 2 varieties Terengganu and Arab. The results indicated that increasing doses of gamma irradiation from 0 to 1200 Gy in steps of 100 Grey (Gy) caused increasing physiological effect on seedling height. There was a progressive increase in seedling height from 2 until 5 weeks after sowing. However, at week 2 and 3 after sowing there was no significant difference between seedling heights. The LD50 values determined from regression analyses for Terengganu based on seedling height were 754, 821.4, 761.7 and 766.7% at 2, 3, 4 and 5 weeks after sowing, respectively and the LD50 values for Arab were 773.8.%, 804.1.%, 704.2 and 708.3% at 2, 3, 4 and 5 weeks, respectively. 2 weeks after sowing appears to be the most appropriate time for data collection. The LD50 values at 2 weeks were not significantly different from 3, 4 and 5 weeks after sowing. The LD50 values for Terengganu and Arab determined at 2 weeks were 754 and 773.8%, respectively. Academic Journals 2009-08 Article PeerReviewed application/pdf en http://irep.iium.edu.my/12689/1/Harding%2520and%2520Mohamad.pdf S.S, Harding and Osman, Mohamad (2009) Radiosensitivity test on two varieties of Terengganu and Arab used in mutation breeding of roselle (Hibiscus sabdariffa L.). African Journal of Plant Science, 3 (8). pp. 181-183. ISSN 1996-0824 http://academicjournals.org/AJPS/PDF/Pdf2009/Aug/Harding%20and%20Mohamad.pdf |
| spellingShingle | S Agriculture (General) S.S, Harding Osman, Mohamad Radiosensitivity test on two varieties of Terengganu and Arab used in mutation breeding of roselle (Hibiscus sabdariffa L.) |
| title | Radiosensitivity test on two varieties of Terengganu and Arab used in mutation breeding of roselle (Hibiscus sabdariffa L.) |
| title_full | Radiosensitivity test on two varieties of Terengganu and Arab used in mutation breeding of roselle (Hibiscus sabdariffa L.) |
| title_fullStr | Radiosensitivity test on two varieties of Terengganu and Arab used in mutation breeding of roselle (Hibiscus sabdariffa L.) |
| title_full_unstemmed | Radiosensitivity test on two varieties of Terengganu and Arab used in mutation breeding of roselle (Hibiscus sabdariffa L.) |
| title_short | Radiosensitivity test on two varieties of Terengganu and Arab used in mutation breeding of roselle (Hibiscus sabdariffa L.) |
| title_sort | radiosensitivity test on two varieties of terengganu and arab used in mutation breeding of roselle (hibiscus sabdariffa l.) |
| topic | S Agriculture (General) |
| url | http://irep.iium.edu.my/12689/ http://irep.iium.edu.my/12689/ http://irep.iium.edu.my/12689/1/Harding%2520and%2520Mohamad.pdf |