The physiology of extremely desiccated Brassica juncea (L) seeds

Savita Khattra, Kiranjyoti Sharma, Gurmit Singh

Abstract


Seeds of four raya cvs., viz. RL 1359, RLM 198, RLM 619 and RLM 514 were desiccated for 2, 7, 15 and 45 days wchich led to different levels of seed moisture. Data on germination capacity speed of germination, seedling dry weight, electrical conductance, dehydrogenase activity and seed storage behaviour for up to two years after desiccation were recorded. Based on this data, cvs. RL 1359 and RLM 514 were found to be tolerant to desiccation 10 as low as 0.73 and 1.16 per cent seed moisture levels, respectively. Seeds of RLM 198 tolerated desiccation up to 2.28 per cent seed moisture. However, RLM 619 seeds showed desiccation injuries in seedling dry weight, electrical conductance and speed of germination at moisture levels below 5.67 per cent.

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DOI: https://doi.org/10.5586/aa.1993.011

Journal ISSN:
  • 2300-357X (online)
  • 0065-0951 (print; ceased since 2016)
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Polish Botanical Society