GENETIC DIVERSITY OF GRAIN QUALITY CHARACTERS IN BANGLADESH RICE GERMPLASM
| Autor: | M. S. Jahan, T. Kumamaru, A. Hamid, H. Satoh |
|---|---|
| Rok vydání: | 2003 |
| Zdroj: | Khulna University Studies. :71-77 |
| ISSN: | 2789-2697 1563-0897 |
| DOI: | 10.53808/kus.2003.5.2.0330-l |
| Popis: | Grain quality characters of 575 Bangladesh rice cultivars from 7 ecotypes were studied. The cultivars were collected from 6 distinct regions (Rajshahi, Dhaka, Sylhet, Barisal, Khulna and Chittagong) of the country. Significant variation was observed in all the parameters investigated. The range of grain length, width, thickness and weight of 100 grains varied between 5.26 mm and 10.36 mm, 1.76 mm and 3.68 mm, 1.30 mm and 2.54 mm, and between 0.84 g and 3.68 g, respectively. Long grains (7.76-9.00 mm) were found to be present in a maximum number of cultivars. However, based on length/width ratio (grain shape), medium grains (L/W ratio 2.10-3.00) showed the maximum frequency. Grain quality characters varied widely according to ecotypes. The cultivars of Transplanted Aman (T. Aman) ecotype exhibited the highest level of genetic variation. Geographical distribution of grain quality parameters differed according to the regions. Cultivars collected from Khulna region were more diverse than cultivars collected from other regions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|