Plant Diversity ›› 2009, Vol. 31 ›› Issue (03): 239-246.DOI: 10.3724 SP.J.1143.2009.08216
• Articles •
SONG Song-Quan1 , Patricia BERJAK2 , Norman W . PAMMENTER2
Changes in desiccation tolerance of pea ( Pisum sativum) seeds during imbibition were studied in this paper. Water uptook by seeds was initially rapid , and then slowly increased until a plateau was reached . Rate of electrolyte leakage increased initially until 11 h , and then declined with imbibition . During imbibition , germination percentage of seeds gradually increased , and water content at which 10% and 50% of seeds and axes were killed by subsequent dehydration significantly increased while desiccation tolerance of seeds and axes was progressively lost . Gibberellin and abscisic acid altered seed germination characteristics and improved desiccation tolerance of axes . These results showed that the loss of desiccation tolerance of imbibed pea seeds was a quantitative feature, and the changes in desiccation tolerance of imbibing orthodox seeds could serve as a model system for the study of seed recalcitrance .
SONG Song-Quan , Patricia BERJAK , Norman W . PAMMENTER. Temporal Pattern of Changes in Desiccation Tolerance during Imbibition of Pisum sativum Seeds[J]. Plant Diversity, 2009, 31(03): 239-246.
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