Identificación de metodologías para la evaluación de tolerancia a temperaturas bajas en arroz (Oryza sativa L.)
In this study the methodologies for the evaluation of the cold tolerance level of rice in the following stages were identified: germination from sterilized dry seeds (placed on a Petri dish at 13°C up the time when the controls showed 70 % of the seeds with coleoptile 5 mm or 35 days after planting), pregerminated seeds (incubated 5° C for 15 days and planted on sterilized soil and kept at ambient for 7 days) and in the seedling stage (seedlings with 3rd leaf well developed were kept at 13°C for 7 days, transferred to ambient temperature for other 7 days). This methodologies, utilizing non-sophisticated equipment, were capable of evaluating large quantities of genotypes in a short time. With this methodologies were evaluated in F s and R2 (double haploids from the anther culture) 624lines which coming from crosses destined 10 improve the cooking quality of genotypes from temperate zones and 19 lines were identified from the evaluation that combined tolerance to low temperature in the three evaluated stages and excellent cooking quality (larges or extralarges grain sizes, low white belly and more of 23 % amylose content).
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Palmira
1989
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| Online Access: | https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/15380 |
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